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M-3, M-23A, M23B ELECTRIC SWITCH MACHINE WITH FIELD

1. DIAGRAM L H LAYOUT DIAGRAM R H LAYOUT L H POINT NORMALLY OPEN R H POINT NORMALLY OPEN 6A2 0025 00 Figure 6 3 Standard Lever Interlock Assemblies for M 23A and M 23B Switch Machines 6 8 SM 5481 Rev 1 July 2009 e E 7 AnsaldoSTS Supplemental Maintenance Information 6 5 1 Selector Lever Assembly The lever interlock assembly see Figure 6 3 includes recesses in both lever hubs and a steel ball carried in a hole in the lever support When reassembling be careful not to lose the ball when the lever is taken off The diameter of the ball is greater than the thickness of the wall of the lever support Thus with the selector lever in the MOTOR position part of the ball is held in the recess of the hand throw lever and thereby prevents operation of the hand throw lever Reversing the selector lever aligns the ball recess in its hub to permit the ball to shift out of the recess in the hand throw lever hub thereby releasing the hand throw lever When the hand throw lever is at any position between the ends of its stroke the ball is held in the recess in the selector lever hub and thereby locks the selector lever The hand throw lever hub has two ball recesses 180 apart so that at either end of the lever stroke one of the recesses will be aligned with the ball to unlock the selector lever If it is desired to make
2. 73 42 40746 23 7 43 75 4 1726 SSS Ly SECTION v y 18 56 61 59 58 DIAGRAM SHOWING SETTING OF SEGMENTS a 4 Uy eS 74 74 746 SECTION Z 2 Figure 7 5 Circuit Controller With Selective Point Detector for M 3 M 23A and M 23B Switch Machines SM 5481 Rev 1 July 2009 7 21 N Parts List 77 AnsaldoSTS Table 7 6 Parts List for Circuit Controller Without Selective Point Detector for M 3 M 23A and M 23B Switch Machines See Figure 7 6 Indication Circuit Controller Without Selective Point Detector for M 3 N294621 and M 23B Switch Machines Frame N284499 Idler Bearing M284492 Short Circuiting Strip Support M074427 Terminal Board M138698 erminal Block M146475 erminal Block M146476 erminal Block with Pin N146478 Insulation M142173 inding Post M138723 ut 026545 Post M138724 inding Post 048854 asher gt a w w z A A N ontact Spring 284721 ontact Spring 074783 ontact Spring M138718 einforcing Spring 074777 einforcing Spring M138696 einforcing Spring M045269 ontact Spring M172380 hort Circuiting Strip M175725 M152038 M146775 rew M056236 runnion 055305 runnion M285410 astellated Nut 050258 042627 042585 MO48692 ontact Segment M045942 nsulating Bushing J0780
3. 4077 0 Locking screw N242122 59 1 HAND plate M287199 64 Wirehamessforhighvollege machines shown 8180 _ Gia o 10905 66 Buhng SM 5481 Rev 1 July 2009 7 7 22 Parts List 77 AnsaldoSTS Wem PatNe 7 8 SM 5481 Rev 1 July 2009 AV 77 AnsaldoSTS Parts List Wem 2 Washer Cover plate 165904 114 N070109 SM 5481 Rev 1 July 2009 7 9 77 AnsaldoSTS Parts List LON 1 W307 N3HM wi L NOILDAS aye SI LNIOd NN NOIL23S 9S 98 99 10 1 LNIOd N3HM ot N NOIL23S A O Ae lt kal N i OHOLONC 26 18 15 M3H2S 4015 ELE A18W3SSv g9 EE 4201 u3 11 Er vol 235 N OZ gt 06 m istum Z Z NOI123S 20 80 90 0 78 6r D ig 6v Figure 7 2 M 23A and M 23B Electric Switch Machine SM 5481 Rev 1 July 2009 7 10 77 AnsaldoSTS Parts List Table 7 3 Parts List for M 3
4. 18 Washer M065762 19 Machine screw 052202 20 crew 522151 21 Wire harness clamp 700963 22 Badoak OOO 46 7 4 SM 5481 Rev 1 July 2009 Parts List SI YOL 2313Q LNIOd X X NOILO3S BIS Ts 08 19 E BUG lt 09 1 LON 1 201 NAHM NOIL23S 16 LON SI 30123134 LNIOd N3HM X X NOILO3S 7 9 v9 0435 yJ a Sv 5 20 80 vot or d lt lt 7 5 M 3 Electric Switch Machine Figure 7 1 SM 5481 Rev 1 July 2009 rts List 52 77 AnsaldoSTS 7 6 Table 7 2 Parts List for M 23A M23B Switch Machines See Figure 7 2 Wem PatNe a ase complete for M 23A and M 23B switch machines standard N291057 Base complete for M 23A and M 23B switch machines machined N293975 mounting lugs N 23A gear box 360 1 gear ralio left hand complete see Figure 7 3 NZ87072 gear box 60 1 gear ratio righthand complete see Figure 7 3 N287072 0001 2 gear box 189 1 gear ratio left hand complete see Figure 7 3 N287073 N Z3A gear box 189 1 gear ratio righthand complete see Figure 7 3 287073 0001 2 gear box 528 1 gear ratio left hand complete see Figure 7 3 N287074 N Z3A gear box 528 1 gear ratio righthand complet
5. 10 1897 20 V de 528 1 15 0 zoVdc 3807 SM 5481 Rev 1 July 2009 e 7 AnsaldoSTS Field Maintenance NOTE The motor current listed for gear ratio 189 1 must be checked in both directions and set for minimum of 12 0 A Current draw may vary by approximately 1 0 to 3 0 A due to mechanical alignments and motor characteristics 6 Ifthe current is not within the specified range remove cotter pin and adjust the friction clutch spring nut in or out to obtain desired current Replace the cotter pin use new cotter pin 7 Remove temporary jumpers The clutch components are naturally subject to wear which changes the slip current and thus require readjustment When adjustment requires the nut to be placed to the limit at which it can be held by a cotter pin the fabric disks should be replaced see Section 5 2 1 for replacement procedure SM 5481 Rev 1 July 2009 4 9 Field Maintenance 7 AnsaldoSTS AV E AnsaldoSTS 4 10 SM 5481 Rev 1 July 2009 m 7 AnsaldoSTS Shop Maintenance 5 SHOP MAINTENANCE 5 1 Adjustment 5 1 1 Point Detector Linkage Adjustment Point detector rollers should clear the smaller diameter of the point detector bar by not more than 1 32 in see Figure 2 12 If necessary adjust by adjusting eyebolts H in Figure 2 8 Screws identified as J in Figure 2 8 must first be removed to adjust eyebolts 5 1 2 Motor Control Contact Adjustment Mo
6. MAIN CRANK SHAFT Figure 2 14 Dual Control Mechanism SM 5481 Rev 1 July 2009 2 19 5 Introduction and Equipment Overview AnsaldoSTS The spring functions in a similar manner if the worm gear teeth are not aligned when the selector lever is returned to the MOTOR position Operation of the selector lever out of the MOTOR position also actuates a pair of motor cutout contacts to open the motor circuit and in some cases to control a line circuit The cutout contacts are mounted in the circuit controller compartment and are operated by a spring return push rod projecting into the gear box This push rod is shifted toward the circuit controller by the action of a cam ledge on the selector clutch yoke engaging an adjustable rocker arm see Figure 2 15 ROCKER ARM MOTOR HA POSITION POSITION MOTOR CUT OUT CONTACTS MIT y Figure 2 15 Motor Cutout Contact Assembly M 23A and M 23B 2 7 3 M 23B Mechanism The mechanical difference between M 23A and M 23B mechanisms is in the hand throw pinion see Figure 2 16 The single tooth on the hub of the hand throw pinion for the M 23B mechanism is of shorter arc than that for the M 23A thus introducing sufficient lost motion between the pinion and the selector clutch to permit full stroke of the hand throw lever and thus the switch points without moving the slide bar far enough for the locking dogs to engage the lock rods and thereby lock the switch points T
7. POINT DETECTOR ROLLER B CIRCUIT CONTROLLER SPRING SHAFT CRANK s W o OPERATING LEVER CONNECTING ROD OPERATING PIN CAM ON YOKE SHAFT GEAR YOKE POINT DETECTOR BAR CONNECTING RODS INDICATION CAMS OPERATING PIN LEVER ECCENTRIC BUSHING 21 46 CRANK SPRING CONNECTING ROD OPERATING PIN ROLLER A Figure 2 10 Point Detector Parts in Normal Position SM 5481 Rev 1 July 2009 2 13 Introduction and Equipment Overview 7 AnsaldoSTS POINT DETECTOR ROLLER CIRCUIT CONTROLLER SHAFT CRANK SPRING OPERATING LEVER L CONNECTING ROD OPERATING PIN CAM ON YOKE SHAFT GEAR YOKE OPERATING PIN OPERATING LEVER ECCENTRIC BUSHING CONNECTING ROD CRANK SPRING POINT DETECTOR ROLLER A OPERATING PIN Figure 2 11 Point Detector Parts in Mid Stroke Position POINT DETECTOR El B OPERATING LEVER CONNECTING ROD CIRCUIT CONTROLLER OPERATING PIN SHAFT CAM ON YOKE POINT DETECTOR BAR SHAFT GEAR CONNECTING PIN OPERATING LEVER CRANK SPRING ECCENTRIC BUSHING POINT DETECTOR CONNECTING ROD ROLLER OPERATING PIN Figure 2 12 Point Detector Parts in Reverse Position 2 14 SM 5481 Rev 1 July 2009 N o 7 AnsaldoSTS Introduction and Equipment Overview POINT DETECTOR ROLLER CRANK SP
8. With an obstruction between the switch point and the stock rail operate the machine by power When the switch point jams against the obstruction the worm gear and worm shaft should stop but the motor should continue to run during the overload time delay period slipping the friction clutch Motor current during this period should be within 10 of the values specified in Table 4 3 If necessary adjust the friction clutch spring to obtain the specified clutch slip current see section 4 2 1 2 for clutch adjustment procedure 3 6 SM 5481 Rev 1 July 2009 7 AnsaldoSTS Field Maintenance 4 FIELD MAINTENANCE 4 1 Preventive Maintenance Preventive maintenance procedures include inspection cleaning drain plug removal and lubrication Procedures for adjustment are provided in Section 4 2 Corrective Maintenance A recommended schedule for performing preventive maintenance tasks is shown in Table 4 1 The actual interval between procedures should depend upon switch machine usage and customer experience Table 4 1 Recommended Preventive Maintenance Schedule Performance See for Clean Lubricate Test Procedure Section 4 1 1 1 Section 4 1 1 1 Section 4 1 4 months Switch machine X 44 month Switch machine 4 1 1 Inspection 6 months X X Section 4 1 2 controller compartment Br cu 4 1 1 1 Switch Installation Area Inspection 1 Check that ties are well tamped to withstand forces caused by pa
9. 1 SN aT m TYPE USED WITH RIGID CONNECTION Figure 2 7 Adjustable Lock Rods 2 4 Circuit Controller The circuit controller has indication contacts that are operated jointly by the lock box and the point detector mechanism in such a manner that the machine as checked by the lock box must have completed its throwing and locking stroke in the proper direction and that the corresponding switch point must be closed properly as checked by the point detector before the corresponding indication contacts can close It also has segmental type motor control contacts for opening the motor circuit when the machine is in its full normal or full reverse position As shown in Figure 2 8 Figure 2 9 Figure 5 1 and Figure 5 2 the circuit controller has a total of 8 sets of contacts operated by cams and segments on shaft which 15 rotated by the slide bar motion transmitted through the lock box rack teeth the idler pinion and the shaft gear The two sets of contacts at the left side viewed from lock rod end of the machine Figure 2 8 and the two at the right side comprise the motor control contacts while the four intervening sets comprise the indication contacts The motor control contacts are operated solely by the shaft carried segments but the indication contacts are also subject to point detector operation Note that the shaft assembly see Figure 5 1 and Figure 5 2 consists of a square shaft on which the two end ins
10. WHEN USED CIRCUIT CONTROLLER MOTOR COMPARTMENT HEATER WHEN USED ARMATURE TERMINAL CONTACTS CONTROLLED BY SELECTOR LEVER CPN SHUNTING STRIP DIRECTION OF NEXT aS pou uc Figure 2 25 Wiring Diagram for DC High Voltage Switch Machine With Split Field Motor SM 5481 Rev 1 July 2009 2 29 i Introduction and Equipment Overview 7 AnsaldoSTS TO CONTROL CIRCUIT N WR SWITCH MACHINE MAIN TERMINAL BOARD NOTE EXTERNAL CONNECTIONS ARE SHOWN TO THE MAIN TERMINAL BOARD FOR A SWITCH MAVING THE RIGHT HAND POINT NORMALLY CLOSED FOR A SWITCH HAVING THE LEFT HAND POINT NORMALLY CLOSED INTERCHANGE THE EXTERNAL LEADS TERMINALS 69 ANO D Figure 2 26 Typical Circuit for Control of DC High Voltage Switch Machine With Split Field Motor Figure 2 25 Using DP 25 or PNP 69 and OR 11 or ORP 60 Relays 2 30 SM 5481 Rev 1 July 2009 n gt 7 AnsaldoSTS Installation 3 INSTALLATION 3 1 General Information Typical installations of the M 3 M 23A and M 23B switches are shown in Figure 3 1 and Figure 3 2 However detailed mounting plans approved by the railroad should be followed when installing the machine Mounting dimensions are shown in Figure 3 3 and Figure 3 4 Switch machines are assembled at the factory to suit particular layouts when sufficient information is provided by the customer but can be changed from right hand to left hand or vice
11. 4 1 3 1 Motor Compartment Drain Plug 2 4 3 4 1 3 2 Circuit Controller Compartment Drain Plug 4 4 4 1 4 EubficatioDrs dieu EDS erat ed 4 4 4 2 Corrective etaed nta aad et ae tk asta ed ada dta 4 7 45271 eae 4 7 4 2 1 1 Switch Operating Rod Point Detector Rod and Lock Rod Adjustment 4 7 4 2 1 2 Friction Clutch 4 8 5 SHOP MAINTENANCE eere eie etel en onReheBRP 5 1 5 1 Adj stmiaent rie ti eR ie e Cere i et aie i a 5 1 5 1 1 Point Detector Linkage 5 1 5 1 2 Motor Control Contact Adjustment sse 5 1 5 1 3 Motor Cutout Contact Adjustment for Switch 5 4 5 1 4 Motor Cutout Contact Adjustment for M 23A and M 23B Switch Machines 5 6 5 1 5 Selector Clutch either anas 5 7 5 2 Corrective a AS ET 5 7 5 2 1 Clutch Felt Packing 5 7 5 2 2 Motor Commutator 5 9 5 3 Maintenance ToolssList e rota cei o edit te cC Dems 5 9 6 SUPPLEMENTAL MAINTE
12. 53 Indication cam 54 475180 55 068281 56 57 58 052308 Pinion SSCs ions 802 M285389 J475186 M284718 M284684 M285432 M236061 134595 70 mo 259 2 73 052362 74 4513583324 74 047767 043025 75 48686 76 048689 78 790074 79 056203 Fi Material required to add selective point detector to existing M 2 285903 22A and M 22B controllers equipped with non selective point detection not shown Material required to add selective point detection to existing M 2 305415 22A and M 22B controllers not previously equipped with point detection not shown Material required to add selective point detection to existing M 3 305405 zis 5 1215 No NIN N N gt gt A Ap O A w N zc c SM 5481 Rev 1 July 2009 7 19 22 Parts List 77 AnsaldoSTS Wem PatNo 23A and M 23B controllers made without point detector not shown N245984 N253225 N285999 racket M245983 Resistor 500 Ohm 115 V 25 W for item 83 N296576 Resistor 800 Ohm 115 V 15 W for item 83a N296577 Resistor 3200 Ohm 230 V 15W for item 83b N296578 M108571 048300 525107 700690 052201 052530 7 20 SM 5481 Rev 1 July 2009 AV 77 AnsaldoSTS Parts List
13. Carefully place hand throw lever in NORMAL position Be sure that bevel pinion remains in time With selector lever in MOTOR position rotate friction clutch housing so that motor clutch teeth are fully engaged SM 5481 Rev 1 July 2009 6 5 Supplemental Maintenance Information AnsaldoSTS 6 Reinstall top bearing assembly and secure with hold down bolts Al Motor cutout push rod should be held back to clear the adjusting rod until top bearing is down Install top bearing bushing C2 rectangular key Cl washer B2 Tighten nut Bl firmly then back off to nearest cotter pin hole and install new cotter pin after operating machine by hand throw lever to be sure that mechanism does not bind 7 Check adjustment of motor cutout push rod Contacts should open when end of selector lever has been raised approximately 6 in from the horizontal MOTOR position 8 Readjust both yoke eccentric bushings as described in Section 5 1 5 then secure by tightening bolt G firmly 9 Check that machine can be operated by power and also that it shifts to hand throw operation from both normal and reverse positions 10 Check that all bolts are tight on lock washers and that all cotters pins in place 11 Replace covers F Bt 08 6 H lt D E G1 G 2 A3 K M Figure 6 2 Sectional View from Motor End of M 23A G
14. Remove the small lock screw using special tool N173641 and remove the packing gland nut Remove the old felt packing Clean the shaft and the inside of the clutch housing using a non flammable grease solvent Install two new felt packing disks part no J047335 Place the packing gland nut in position Using the spanner end of special tool N173641 pull down nut only until it is flush with the bottom of the clutch housing Then insert the locking screw and tighten it securely Coat rubbing surfaces of packing rings with gear box lubricant Clean shaft surface Install housing on the shaft Old fabric disks should be replaced Clean old clutch plates thoroughly using a non flammable grease solvent to remove any accumulation of lubricant Inspect old clutch plates and replace if damaged or excessively worn Reassemble fabric disks and clutch plates as shown in Figure 5 4 Notice that a fabric disk is first in the stacking order and that a metallic clutch plate is last in the stacking order and contacts the clutch spring Install the clutch spring and adjusting nut Adjust the nut so the spring length is as recorded in step 1 Check friction clutch adjustment and adjust 1f necessary following the procedure of Section 4 2 1 2 Install new cotter pin After a brief wearing in period recheck friction clutch adjustment and adjust if necessary following the procedure of Section 4 2 1 2 SM 5481 Rev 1 July 2009 AV 7 AnsaldoSTS
15. as follows a Remove hex nut and washers from end of selector lever shaft Slide selector lever and lever support K from the shaft Be careful not to lose steel ball in lever support NOTE If stop screw is used in hub of hand throw lever it will be necessary to remove this lever also and interchange stop screw and cap screw see Figure 6 3 Then re install hand throw lever and fasten in place with clamping bolt b Reassemble lever support K with hole for the ball on motor side of shaft Insert steel ball and reassemble selector lever on shaft so that lever will be 180 from its original position Stop screw if used may require positioning hand throw lever to align recess with hole in lever support so that ball will not interfere when selector lever is applied Replace hex nut and washers on end of shaft to hold selector lever in place and fasten lever support K with the two bolts A3 which also secure the bottom of the lever shaft bearing c Operate selector lever to MOTOR position toward motor end of machine and check that it moves yoke N down d Interchange MOTOR and HAND nameplates on selector lever to correspond with the new lever positions 5 Reassemble collar E with chamfer down on top of crank and with hand throw lever vertical install hand throw bevel pinion D engaging tooth marked R for right hand assembly or L for left hand assembly with punched marked master tooth space on hand throw gear F
16. versa in the field Conversion of the M 3 is simple and no detailed instructions are required Detailed instructions for changing the M 23A and M 23B dual control machines are Section 6 4 Figure 3 1 Typical Installation of M 3 Switch Machine SM 5481 Rev 1 July 2009 3 1 Installation ui MOLES FOR BOLTS Ox xe E Figure 3 3 Typical M 3 Switch Machine Mounting Plan Right Hand Assembly with Adjacent Point Closed 3 2 SM 5481 Rev 1 July 2009 n D 7 AnsaldoSTS Installation MOLES FOR 18 250 18 238 1 0j EM e 2 Figure 3 4 Typical M 23A 23 Switch Machine Mounting Plan Right Hand Assembly with Adjacent Point Closed 3 2 Installation Procedure Follow the procedures provided below in Section 3 2 1 through Section 3 2 12 in the order listed to install the switch machine 3 2 1 Mounting Mount and secure switch machine on railroad ties according to the layout plans of the particular location 3 2 2 Drain Plug Installation Only Where Required NOTE Drain plugs are provided for machines installed where blowing sand or dirt could enter the drain holes and cause mechanical failure The plugs should only be installed in locations where this condition is present SM 5481 Rev 1 July 2
17. 110 V dc 20 V dc and 110 V ac The machines are completely wired at the factory Internal wiring connects to the main terminal board in the motor compartment The main terminal board is the interface for external wiring A typical wiring diagram or working drawing is enclosed with each machine to show how external connections are made to the main terminal board for a particular application The internal wiring includes wires for electric heaters that can be added in the circuit controller and motor compartments SM 5481 Rev 1 July 2009 1 1 i Introduction and Equipment Overview 7 AnsaldoSTS AV E AnsaldoSTS 1 2 SM 5481 Rev 1 July 2009 n i 7 AnsaldoSTS Introduction and Equipment Overview 2 FUNCTIONAL DESCRIPTION 2 1 General Description of Operating Mechanism The switch machine is divided into three compartments The components of each compartment are listed below See Figure 2 1 for the M 3 machine and Figure 2 2 for the M 23A and M 23B machines Motor Compartment This compartment houses the motor and contains the main terminal board There is a wire outlet for the external wiring The friction clutch of the gear train projects into this compartment Gear Box The gear box is divided further into two compartments one for the spur gear portion of the reduction gearing and the other for the main crank and worm gear drive Connection between the spur gears and the worm shaft is through the friction clutc
18. 25 relay with one magnetic blowout contact without low voltage neutral contacts to one having two magnetic blowout contacts can be accomplished by following Service Specification SU 2378 N The PNP 69 and PNP 61A relays are used in switch machine installations with the earlier type plug in relays The PNP 69 relay has two neutral magnetic blowout contacts and is used to control double break switch motor circuits The PNP 61A relay has one neutral magnetic blowout contact and is used to control single break switch motor circuits The Styles PP 151 and PN 15OBM plug in relays and the DP 25 relay for shelf mounting are also available for the control of switch machines using ac motors having series connected stator coils PNP 69 and 61 plug in relays were formerly used for this purpose The typical circuits shown are intended to illustrate principles and should not be used as working drawings Pole changing contacts and other circuits not shown for control of the WR relay should be in accordance with the circuits designed for the specific installation No change is ever required in the internal wiring as all internal and external wires go directly to the main terminal board If the layout calls for a left hand point normally closed change leads as called for in the notes shown in Figure 2 20 Figure 2 21 Figure 2 23 Figure 2 24 and Figure 2 26 The circuit controller cams for the indication contacts should also be reversed as outlined in
19. 64 2 2 1 2 WHEN F2 1 HELD CLEAR 1 1 25 MIN SHUNTING STRIP 3 64 MIN SECT W W amp X X 5 64 MAX 3 64 MIN SS IOS Rs manans sss OSS 410 MAX 1 1 216 MIN 3 64 MIN SECT N N SHUNTING STRIP 6A2 0092 00 SECT Y Y amp 2 2 Figure 5 1 Circuit Controller Adjustment Sectional Views of Figure 5 2 5 2 SM 5481 Rev 1 July 2009 7 AnsaldoSTS Shop Maintenance CAN BE SEPARATED FOR REASSEMBLY IN THE OPPOSITE POSITION SIMPLY BY FORCING AGAINST THE SPRING VIEW INDICATION CAM 375 DIA LEFT SIDE INDICATION CAM SEE VIEW Z DOWEL 5 9 PINS GEAR Oo o z COIL SPRING x F 516 247 4 88 2 OPERATING Ay LEVER N YOKE ECCENTRIC a BUSHING 7 INSULATING BUSHING MOTOR CONTROL RIGHT SIDE SEGMENT 401 DIA SEE VIEW B DIAGRAM SHOWING SHAFT ASSEMBLY SETTING OF SEGMENTS 90 TEETH SERRER en i p SEPARATION FOR READJUSTMENT W REQUIRES LOOSENING OR REMOVAL SHAFT END NUTS VIEW MOTOR CONTROL SEGMENT 6A2 0093 00 Figure 5 2 Circuit Controller Shaft Assembly SM 5481 Rev 1 July 2009 5 3 Shop Maintenance 7 AnsaldoSTS Contact forces and clearances must be in accordance with Figure 5 1 Sections P P and N N and are attained by following the steps l
20. Ensure that the hasp is fully seated in the staple notch Repeat Steps 2 through 5 as necessary until satisfactory adjustment 1s obtained Reinstall the circuit controller cover using the hardware removed in Step 1 If required restore power to the machine 5 1 4 Motor Cutout Contact Adjustment for M 23A and M 23B Switch Machines The motor cutout contact for the M 23A and M 23B machines should open when the selector lever is lifted 6 in measured at the hand grip out of the MOTOR position The contacts should open 1 8 in to 3 16 in when the selector lever is in the HAND position When the selector lever is in MOTOR position the end of the push rod should be 1 16 in clear of the contact operating bar and the contacts should be closed with 1 5 to 2 0 Ib force Adjustment of the contacts closed force when necessary is made by careful use of a spring bender Use the following procedure to adjust With selector lever in MOTOR position adjust 5 6 SM 5481 Rev 1 July 2009 e 5 7 AnsaldoSTS Shop Maintenance the rocker arm see Figure 2 15 up or down as necessary to just touch the machined cam surface on the selector yoke Then the turn the adjusting rod so that its eccentric head holds the end of the push rod 1 16 in clear of the contact operating bar 5 1 5 Selector Clutch Adjustment Selector clutch adjustment should be checked periodically When the selector lever is in the MOTOR position and the selector clutch
21. High Voltage Switch Machine and DC High Voltage Switch Machine With Series Parallel Field Motor TO CONTROL CIRCUIT N WR R SWITCH MACHINE MAIN TERMINAL BOARD NOTE EXTERNAL CONNECTIONS RO F SWITCH HAVING THE RIGHT HAND POINT NORMALLY CLOSED FOR A SWITCH HAVING THE LEFT HAND POINT NORMALLY CLOSED INTERCHANGE THE EXTERNAL LEADS TO TERMINAL AND AND TO TERMINALS 5 AND 0 THE MAIN TERMINAL BOARO Figure 2 23 Typical Circuit for Control of DC High Voltage Switch Machine With Series Parallel Field Motor Figure 2 22 Using DP 25 or PNP 69 and OR 11 or ORP 60 Relays 2 28 SM 5481 Rev 1 July 2009 7 AnsaldoSTS Introduction and Equipment Overview NWA CONTROL 2981 EXTERNAL CONNECTIONS ARE SHOWN TO THE MAIN TERMINAL BOARD FOR A SWITCH HAVING THE RIGHT HAND POINT NORMALLY CLOSED FOR A SWITCH HAVING THE LEFT HAND POINT NORMALLY CLOSED INTERCHANGE THE EXTERNAL LEADS TO TERMINALS AND AND TO TERMINALS AND 0 ON THE MAIN TERMINAL BOARD SWITCH MACHINE MAIN TERMINAL BOARD Figure 2 24 Typical Circuit for Control of DC High Voltage Switch Machine With Series Parallel Field Motor Figure 2 22 Using PP 51 PN 150BM and PN 150SO Relays MOTOR NOTE NUMBER IN CIRCLE REPRESENTS NUMBER OF TERMINAL NUMBER NOT IN CIRCLE SHOWS NUMBER OF TERMINAL TO WHICH OTHER ENO OF WIRE 1 CONNECTED MOTOR TERMINAL BOARD CIRCUIT CONTROLLER HEATER
22. M284717 ushing for use with pin item 64 not shown M284682 eft hand crank includes roller and pin items 9 and 10 N284650 oller M284423 M284851 N284649 N338005 4079235 M284495 N284653 285638 001 m N gt 5 o c Arm Right hand crank includes roller and pin items 9 and 10 Operating lever includes bushing item 13 Bushing Latch Eccentric bushing Spring M142167 Short circuiting strip support M074427 Connecting rod M282430 ye rod 164921 ock washer ex nut ring erminal board erminal block erminal block 146476 erminal block with pin N146478 Insulation 142173 post 138723 026545 138724 048854 47818 A c A N d O 1 N e o c N zx N N 146475 N N N RN nding post inding post asher N c 480301 ontact spring 328502 ontact spring M074783 ontact spring M138718 einforcing spring 074777 einforcing spring M138696 einforcing spring M045269 ontact spring 172380 hort circuiting strip M175725 9 w w w w A Q w l SM 5481 Rev 1 July 2009 77 AnsaldoSTS Parts List 41 Stud M152038 Q 457 B ew 528 Trunnion M055305 50 Castellated nut M050258 47 Cotter pin stainless steel 1 8 x 1 1 2 in J486001 042627 A 51 0 52 078019
23. Right Hand 6 4 Sectional View from Motor End of M 23A Gear Box Right Hand Installation 6 6 Standard Lever Interlock Assemblies for M 23A and M 23B Switch Machines 6 8 3 Electric Switch Machine 7 5 M 23A 23 Electric Switch ee 7 10 Gear for M 3 Switch 7 13 Gear Box for M 23A and M 23B Switch Machines 7 17 Circuit Controller With Selective Point Detector for M 3 M 23A M 23B Switch 7 21 Circuit Controller Without Selective Point Detector for M 3 M 23A M 23B Switch 7 24 SM 5481 Rev 1 July 2009 74 AnsaldoSTS Table of Contents List of Tables Table 2 1 Gear Train rennes 2 15 Table 4 1 Recommended Preventive Maintenance Schedule sse 4 1 Table 4 2 Lubrication 5 4 7 Table 4 3 Friction Clutch Slip 4 8 Table 7 1 Parts List for Switch Machine See Figure 7 1 7 1 Table 7 2 Parts List for M 23A and M23B Switch Machines See Figure 7 2 7 6 Table
24. Section 6 2 A wiring diagram or a working drawing is enclosed with each switch machine when shipped The wiring diagram enclosed if not an actual working drawing is intended to illustrate a typical installation However working drawings should be followed for a specific installation Notes on the typical wiring diagram when enclosed cover variations required for a few typical types of switch indication and the manner in which jumpers on the main terminal board and shunting strips should be arranged Switch machines with split field motors are only supplied for dc high voltage application It is recommended that switch machines having split field motors be used only where the WR relays are de energized while the switch is electrically locked such as in relay interlocking Also double break motor circuit should be used SM 5481 Rev 1 July 2009 2 25 Introduction and Equipment Overview 7 77 AnsaldoSTS If the latch see Section 2 4 3 Point Detector is arranged to be self restoring the control and indication circuits should be examined before installing the switch machines to make sure that the circuits will not prevent the machine from operating to restore the latch automatically after a latch out occurs CONNECTORS AS SHOWN IN 21 A FOR SER ES MOTOR PARALLEL FIELD FOR aLL PARALLEL FELD TIONS SEE 5 21 8 MCTZR TOMPARTUENT m 2 i 2 Fle
25. Switch Machine Gear Box See Figure 7 3 Description PartNo Gear box includes bushings items 44 to 49 287085 Top bearing N146606 Top bearing for NYCT low profile application only N146606001 Womsa 8 Cichhouwing Cutchendpte OWhp e Cupe 4655 OWhspi 32 OWchadwtngnd 2865 elt gasket J047335 M245192 M147400 otter pin J048636 Gasket M147410 earing cap M274596 286583 crank bevel gear M286995 Hand crank bevel pinion M146377 haft 149700 First reduction gear 360 1 gear ratio M286577 First reduction gear 528 1 gear ratio M286579 First reduction gear 189 1 gear ratio M286576 Second reduction gear 360 1 gear ratio M286578 Second reduction gear 528 1 gear ratio M286580 pacer M286591 pacer M286592 haft end plate M286587 Dowel pin 048925 Oilite bushing 079694 Gear train cover N451161 haft end plate M292426 ug hasp M165738 2102 crew J5000970112 crew 050036 ock washer 047526 crew 050090 crew 050092 ock washer 047783 ipe plug 1 2 in 032904 Ball bearing 066032 Ball bearing 066246 Lock washer shake proof J047810 SM 5481 Rev 1 July 2009 7 11 22 Parts List 77 AnsaldoSTS 048575 048755 790076 Oilite bushing 790008 790007 790004 790262 790291 790290 790261 WomGer 4 7 12 SM 5481 Rev 1 July 2009 AnsaldoSTS Parts List VIEW OF 169 TO1 GEAR RATIO AS
26. in consistency with temperature variation It will retain its lubricating properties at the highest and lowest temperatures encountered It does not require thinning at low temperatures Apply to Spur gear teeth Apply a light coating Worm gear compartment Pack well around worm gear and selector clutch This will require about 5 Ib of lubricant It must be replaced as necessary to keep the worm gear covered SM 5481 Rev 1 July 2009 4 5 Field Maintenance 4 AnsaldoSTS Figure 4 1 Lubrication Locations for M 3 Switch Machine nao 1 Ni pan H HAND THROW LEVER 4 42 M Mia d MeO Figure 4 2 Lubrication Locations for M 23A and M 23B Switch Machines 4 6 SM 5481 Rev 1 July 2009 SV E C 7 AnsaldoSTS Field Maintenance Table 4 2 Lubrication Summary Point of int o Products Application Lubricant that Meet See Figure US amp S Part 4 1 and Number Figure 4 2 Application Point of Lubricant Method Application Specification Pressure gun grease Alemite Grease gun Grease Apply until surplus visible M 7650 01 Solidified Oil 32 fittings at bearing edges Pressure gun grease Alemite solidified Grease gun or Surface M 7650 01 or oil 32 or SAE pour or paddle C Pour Bearings few drops periodically i i cups as required Recess on Fill periodically as top of crank required bearing Low temperature oil Surface Apply very
27. it compulsory that the hand throw lever be in the NORMAL position before allowing the selector lever to be operated one of the ball recesses in the hand throw lever must be plugged by the use of a stop screw M287186 as shown in Figure 6 3 When the stop screw is used it must be installed in the specified recess in the hand throw lever hub as follows With the hand throw lever in the NORMAL position the stop screw must be in the recess on the side of the shaft opposite to the side the selector lever is on when in the MOTOR position see Figure 6 3 The lever support can be assembled with the hole for the ball on either side of the lever shaft center However it must be assembled so that the hole for the ball is on the same side of the shaft as the selector lever is in for MOTOR position see Figure 6 3 As previously mentioned the selector lever can be assembled on the square end of its shaft in either of two positions 180 apart so as to have the MOTOR position of the lever either toward the motor compartment or toward the circuit controller compartment Machines are shipped from the factory with the selector lever assembled for MOTOR position toward the motor compartment If the lever assembly is reversed in the field the transfer must be made while the crank finger on the end of the shaft is at the bottom of its stroke to force the selector clutch down toward its MOTOR position Be sure to reassemble the lever support to shift the hole
28. light film on all contact segments at frequent intervals after thorough cleaning Low temperature Stazon Periodically as required icati i teeth Keep worm gear compartment completely covered Approximately 5 Ib of lubricant required 4 2 Corrective Maintenance Field corrective maintenance procedures include only a limited set of adjustments Major overhauls and repairs requiring disassembly to the components level are not recommended for field maintenance For these procedures the machine should be removed from service and sent to the shop for repair See 5 for shop maintenance 4 2 1 Adjustment 4 2 1 1 Switch Operating Rod Point Detector Rod and Lock Rod Adjustment The switch operating rod point detector rod and lock rods should be kept in adjustment to meet applicable AREMA signal manual or railroad specifications SM 5453 provides instructions for using a point detector gage to check point detector operation SM 5481 Rev 1 July 2009 4 7 i Field Maintenance 4 AnsaldoSTS 4 2 1 2 Friction Clutch Adjustment NOTE Careful friction clutch adjustment is important to assure proper operation of the switch machine If the friction clutch slips too easily the motor current may not operate the overload relay If the friction clutch adjustment is too tight unnecessary wear on mechanical parts may occur due to absence of shock protection In ordinary operation without obstruction of the switch
29. of the hand throw pinion Also check that the hand throw lever will operate the machine If the selector clutch fails to shift up full stroke adjust the height of the reverse hand throw lever stand to bring the clutch teeth into proper alignment 4 With the hand throw lever in NORMAL position operate the machine by power to the reverse position Move the selector lever to the HAND position The selector clutch should ride against but not engage the hand throw pinion tooth Also the selector clutch spring should be compressed taking up clearance between the upper and lower spring cups Next move the hand throw lever toward the reverse The selector clutch should snap up into engagement with the hand throw pinion just before the hand throw lever reaches the reverse position lever stand Check that the hand throw lever will now operate the machine 5 Repeat of step 4 for opposite end of stroke With the hand throw lever in REVERSE position operate the machine by power to normal position Move the selector lever to the HAND position The selector clutch should ride against but not engage the hand throw pinion tooth Move the hand throw lever toward the normal position The selector clutch should snap up into engagement with the hand throw pinion just before the hand throw lever reaches the normal position lever stand Check that the hand throw lever will now operate the machine 3 2 12 Check of Operation With Obstruction Friction Clutch Check
30. permit movement of the point detector bar from the normal to reverse position without contacting either roller Mid stroke positions are shown Figure 2 11 Reverse positions of the parts are shown in Figure 2 12 Both rollers are again clear of the bar but roller B is in position to deflect the yoke downward should the point detector bar become displaced The latched out position of the circuit controller is shown in Figure 2 13 In this position the point detector bar has been shifted from its reverse position due to deflection of the switch points caused by improper trailing The large diameter of the point detector bar has been brought into contact with point detector roller B resulting in the connecting rod shifting the operating levers and thereby rotating the yoke downward about the controller shaft until the latch as biased by the latch spring snaps over the top of the yoke midsection As the yoke 1 rotated downward the upright cam portion of the yoke engages the roller on the under side of both indication contact assemblies and thereby lifts the reverse contact assembly so as to open the reverse indication contacts and to close the indication contacts against the short circuiting strip The latch can be restored manually or by operating the machine to the opposite position so that the cam on the controller shaft gear in mid stroke will lift the latch to permit the yoke to be restored to its horizontal position resting against the yoke stop
31. stud in the side of the gear and has two slots so that it can be engaged with its corresponding stud in either of two positions The cams are held engaged with their respective studs by spring force and a set screw adjacent to slots that is tightened against the gear hub after adjustments have been made To shift the cams from one position to the other follow the procedure listed below 1 Loosen the set screw No 8 32 allen head adjacent to slots Then carefully to avoid distortion of contact springs insert two screw drivers between the cam and the gear 2 Move the cam away from the gear against the force of its coil spring 3 Rotate the cam to the alternate position until it snaps in place see Figure 5 1 4 Tighten set screws in place 5 Repeat steps 1 4 for the other cam The two cams must be shifted individually 6 3 Installing A New Or Rebuilt Circuit Controller To install a new or rebuilt circuit controller follow the procedure listed below 1 Remove old circuit controller Lower new circuit controller into circuit controller compartment see Figure 7 1 Align mounting holes NOTE When removing the old circuit controller it is necessary to operate the switch movement by crank M 3 or hand throw lever M 23A and M 23B to gain access to all four hold down bolts Before installing a new or rebuilt circuit controller it is necessary that the lock box is toward the MOTOR end of the switch 2 Reinstall
32. the selector lever provides a positive drive to pull the lower teeth apart far enough that the chamfered corners of the teeth are in engagement instead of the nearly vertical working faces At this point the single tooth at the top of the clutch assembly is raised sufficiently to start to engage the hand throw pinion and will be moved into engagement with it by the spring force and any upward thrust due to the torque load on the lower teeth provided the two upper teeth are aligned to permit such engagement If these upper teeth are not aligned the spring will hold the clutch for hand operation against the hand throw pinion tooth until the hand throw lever is operated to obtain alignment 2 18 SM 5481 Rev 1 July 2009 77 AnsaldoSTS Introduction and Equipment Overview CLUTCH FOR HAND OPERATION UPPER ROLLER ROLLER SELECTOR CLUTCH SPRING SELECTOR LEVER SHAFT LOWER SPRING CUP SELECTOR CLUTCH YOKE CLUTCH FOR MOTOR OPERATION LOWER ROLLER MAIN CRANK NOTE SELECTOR CLUTCH ASSEMBLY COMPRISES PARTS MARKED UPPER SPRING CUP HAND THROW BEVEL GEAR BEARING CAP HAND THROW LEVER SHAFT SELECTOR LEVER SHAFT HAND THROW PINION m ii SN CLUTCH FOR HAND OPERATION ECCENTRIC BUSHING RSMAS SELECTOR CLUTCH SPRING LOWER SPRING CUP SELECTOR CLUTCH YOKE WORM GEAR CLUTCH FOR MOTOR OPERATION
33. the two screws 81 and lock washers in the holes nearest to the MOTOR compartment 3 Reinstall the plate 9 two screws 6 and two lock washers between the point detector cranks 6 2 SM 5481 Rev 1 July 2009 m E 7 AnsaldoSTS Supplemental Maintenance Information With wire harness within the clamps reinstall the four wire clamps with the four screws and four lock washers Refer to tags and reattach harness wires to correct circuit controller terminals and heater connections Tighten all screws securely Make sure that the gearing on the circuit controller meshes properly with the crank teeth on the lock box By use of the hand crank M 3 or hand throw lever M 23A or M 23B operate the movement to the end of its stroke This places the slide bar and lock box toward the MOTOR Check that the circuit controller shaft assembly is in the angular position agreeing with that shown in Section Y Y of Figure 7 5 Checking specifically that the relation shown in the figure for correct setting of segments for contacts 24 25 and 26 27 This should place the cam block item 57 of main shaft gear item 56 in the position shown in the figure The next move should rotate the cam block away from rather than into the pinion gear item 59 Install at least three of the circuit controller frame hold down bolts but do not tighten By use of the hand crank or hand throw lever operate the movement slowly checking that the cam block m
34. to shunt all four contacts when indication circuits require such arrangement When the machine reaches the end of its stroke the notch in cam P comes on top and thus permits the reverse pair of contacts to close except when prevented by point detection as explained in Section 2 4 3 SM 5481 Rev 1 July 2009 2 11 5 2 Introduction and Equipment Overview AnsaldoSTS Instructions are provided in Section 6 2 for shifting the cams to reverse the ends of the stroke at which they have their notches up Instructions are provided in 5 1 2 for adjustment of the contacts 2 4 3 Point Detector As described in the preceding section 2 4 2 the indication contacts are positively opened by the lock box action and merely permitted to close when the cam notches are aligned unless closure is prevented by point detector action Point detection checks switch point closure separately from the lock rod connection and is used not only to check the switch point when it is first closed but also to detect damage to a switch point caused by dragging equipment or by traffic running through the switch improperly while the machine is in the locked up position The point detector apparatus in this circuit controller is selective like the locking in that the point detector bar must shift to correspond with the switch operating stroke when the machine is reversed It also has a latch out feature which will hold the indication contacts open
35. until reset when the point detector bar is displaced while the machine is in the locked up position The latch is arranged to take advantage of the considerable displacement of the point detector bar that occurs at the time the switch points are being deflected by improperly trailing traffic or by dragging equipment so that the contacts are prevented from indicating even though the points may subsequently spring back and leave the point detector bar near its original position Thus protection is provided in case the switch points have been damaged in such a way as to be unsafe for facing point traffic yet so distorted as to leave very little net shift of the point detector bar The latch is equipped with a self restoring feature that may be readily removed if not wanted to take care of situations where the latch may become unnecessarily latched up due to unusual traffic shocks that do not affect the fit of the switch point against the rail the latch being reset automatically when the machine is next operated so as to withdraw the locking dog from the lock rod notch If the latch were latched up as the result of damage to the switch point it would be found impossible for the machine to complete its stroke in either direction due to lock rod fouling The latch can also be reset manually Detailed construction of the point detector mechanism is shown in Figure 2 8 and the relative positions of the eccentric bushings operating rods and poin
36. vertical position and remove set screw Fl from hand throw bevel gear F Remove lever assembly and lift out hand throw bevel gear 6 Remove bolt G securing yoke eccentric bushings Cl and then remove yoke support H Note positions of eccentric bushings Care should be taken to avoid changing their positions when removing the bolt 2 REDUCTION GEAR 11 REDUCTION GEAR Z V SA 4 4 2 NA nr SS Figure 6 1 Sectional Views of M 23A Gear Box Right Hand Installation Reassembly Steps 1 Transfer yoke support H to the other hub rotate yoke 180 and reapply eccentric bushing bolt G without disturbing eccentric bushing positions 6 4 SM 5481 Rev 1 July 2009 e E 7 upplemental Maintenance Information 2 Reinstall lever assembly to the hub on opposite side of gear box with shaft splines entering hand throw gear F and with eccentric pin P on selector shaft entering the slot on the end of the yoke 3 With hand throw lever vertical reinstall set screw Fl in hand throw gear Reinstall bolts A2 to secure yoke support H and replace the two top bolts A4 to hold lever shaft bearing M in place 4 In order that the MOTOR position of the selector lever will be toward the motor end of machine as indicated for standard assemblies in the four diagrams of Figure 6 3 selector lever and lever interlock must be reassembled 180 from original position on shaft
37. 009 3 3 Installation 4 AnsaldoSTS CAUTION If drain plugs are installed they must be periodically removed to drain water from the compartments especially prior to freezing temperatures Water accumulation especially with freezing temperatures could cause equipment damage 3 2 2 1 Motor Compartment Drain Plugs Two 3 8 in pipe plugs are supplied in a bag in the motor compartment They are provided to plug two threaded drain holes located under the crank case compartment identified as Z in Figure 4 1 and Figure 4 2 Install these plugs only if machines are located where blowing sand or dirt could enter the machine and cause a failure See note and caution statements above 3 2 2 2 Circuit Controller Compartment Drain Plugs Two slot head bolts with lock washers function as drain plugs in the circuit controller compartment identified as in Figure 4 1 and Figure 4 2 These bolts are shipped in place but not fully tightened Tighten these bolts only if machines are located where blowing sand or dirt could enter the machine and cause a failure If this condition does not apply remove the bolts See note and caution statements above 3 2 3 Wiring Connect the external wiring to the terminal board according to the wiring diagram for the particular installation 3 2 4 Initial Gear Lubrication Gear lubricant M 7652 2 is provided in a container shipped with the machine Apply a light coat of this lu
38. 0112 Cap screw hex head cad pl 5 16 18 x 3 4 in 050036 Lock washer cad pl 5 16 in 047526 066032 all bearing 066246 ock washer 047810 048575 032904 Clutch for 5 spline main crank for hand operation N302734 Clutch for 10 spline main crank for hand operation N286671 SM 5481 Rev 1 July 2009 7 15 Parts List 7 16 AV 77 AnsaldoSTS em Description PatNo Clutch for 5 main crank for motor operation 302732 Clutch for 10 spline main crank for motor operation M286669 Umerdubhup OOOO Clutch spring ower clutch cup Gasket 1 2 in sq x 4 5 in long 7 ushing ushing ushing ushing ushing M253753 M218627 J067035 790008 790007 790004 790262 790291 790290 790261 J790328 SM 5481 Rev 1 July 2009 AV 77 AnsaldoSTS Parts List VIEW OF189 1 GEAR RATIO ASSEMBLY Figure 7 4 Gear Box for M 23A and M 23B Switch Machines SM 5481 Rev 1 July 2009 7 17 Parts List 77 AnsaldoSTS Table 7 5 Parts List for Circuit Controller With Selective Point Detector for M 3 7 18 M 23A and M 23B Switch Machines See Figure 7 5 Indication circuit controller with selective point detector for M 285638 and M 23B switch machin Indication Circuit Controller without point detector latch rame N284499 dler bearing N338004 Bracket M284493 oke includes bushings items 6 and 7 N284681 shing
39. 19 ndication Cam M284494 am Spring M074784 ear N294584 M074796 ain Shaft M282431 inion Shaft N338002 hi M134595 ontact spring M251938 olol olz z cic cR wo w wl NINI N N NIN lt Q 5 RABIA w CO N ABI AR n 3 7 22 SM 5481 Rev 1 July 2009 z 77 AnsaldoSTS Parts List em as iption 45 Stop spring M251939 Stop spring M251940 Spacer M294620 056203 SM 5481 Rev 1 July 2009 7 23 Parts List 7 AnsaldoSTS RC SS lt DIAGRAM SHOWING SETTING OF SEGMENTS Figure 7 6 Circuit Controller Without Selective Point Detector for 3 M 23A and M 23B Switch Machines 7 24 SM 5481 Rev 1 July 2009 AV 77 AnsaldoSTS Parts List 8 RAIL TEAM AND TECHNICAL SUPPORT The Rapid Action Information Link Team RAIL Team is a group of experienced product and application engineers ready to assist you to resolve any technical issues concerning this product Contact the RAIL Team in the United States at 1 800 652 7276 or by e mail at railteam ansaldo sts us SM 5481 Rev 1 July 2009 8 1 mA RAIL Team and Technical Support 7 AnsaldoSTS 9 E AnsaldoSTS End of Manual 8 2 SM 5481 Rev 1 July 2009
40. 2 4 In these figures the main crank is designated X the switch operating bar and the slide bar Z Assuming that Figure 2 3 shows the normal position a reverse movement is started by a clockwise rotation of main crank X Lug on top of main crank X acting against roller Z1 on slide bar Z causes the unlocking of the lock rod by causing slide bar Z to move to the left one half of its stroke Meanwhile roller x on the underside of main crank X is moved through an arc of 40 in the radial portion of groove in switch operating bar Y thus freeing the bar for the reverse stroke During the next 140 rotation of main crank X roller x engages the straight or reverse operating face of groove y and moves the switch operating bar Y to the reverse position Figure 2 5 shows the relative mid stroke positions of switch operating bar Y and slide bar Z Crank X is rotating clockwise but is not transmitting motion to slide bar Z as lug becomes disengaged from roller z1 Surfaces v and v1 of slide bar Z are radial to the center of the shaft and prevent the slide bar from moving The full reverse position is shown by Figure 2 6 Roller x on crank X acting in groove y has moved switch operating bar Y to the reverse position and secured it against back thrust lug x has come into contact with roller z during the last 40 of rotation of crank X thus driving slide bar Z to its full reverse position 2 4 SM 5481 Rev 1 July
41. 2009 AT s 7 AnsaldoSTS Introduction and Equipment Overview 71 SLIDE BAR BOTTOM VIEW SLIDE BAR Z B SWITCH OPERATING BAR Y Figure 2 3 Switch Operating Mechanism SM 5481 Rev 1 July 2009 2 5 i Introduction and Equipment Overview 7 AnsaldoSTS Figure 2 6 Driving Parts in Extreme Position Opposite to Position Shown in Figure 2 4 2 6 SM 5481 Rev 1 July 2009 5 AnsaldoSTS Introduction and Equipment Overview 2 3 Switch Point Locking Connection to the switch points may be made at either end of switch operating bar Y to suit the particular switch layout The position of the switch points is checked and secured by the action of the lock box The lock box rests on and is operated from an extension of the slide bar see Figure 2 1 During the first 40 rotation of the main crank the corresponding motion of the slide bar withdraws the lower locking dog of the lock box from the lower notch of the lock rod thus unlocking the switch points The following 140 rotation of the crank operates the switch and the lock rod stops with its upper notch aligned to receive the upper locking dog of the lock box The final 40 rotation of the crank completes the stroke of the slide bar driving the upper locking dog into the lock rod notch to lock the switch points in the reverse position The lock rods consist of two rectangular rods side b
42. 7 3 Parts List for Switch Machine Gear Box See Figure 7 3 7 11 Table 7 4 Parts List for M 23A and M23 B Switch Machine Gear Box See Figure 7 4 7 14 Table 7 5 Parts List for Circuit Controller With Selective Point Detector for M 3 M 23A and M 23B Switch Machines See Figure 7 7 18 Table 7 6 Parts List for Circuit Controller Without Selective Point Detector for M 3 M 23A and M 23B Switch Machines See Figure 7 6 7 22 SM 5481 Rev 1 July 2009 ii VII Table of Contents 7 AnsaldoSTS AV E AnsaldoSTS viii SM 5481 Rev 1 July 2009 m E 7 AnsaldoSTS Introduction and Equipment Overview 1 INTRODUCTION AND EQUIPMENT OVERVIEW 1 1 Introduction This service manual is for M 3 M 23A and M 23B switch machines with field wound motors Mechanically and functionally there are no major differences between these switch machines and the M 3 M 23A and M 23B switch machines with permanent magnet motors The only difference is in the motor and the associated wiring 1 2 Equipment Overview The M 3 M 23A and M 23B electric switch machines consist essentially of a motor a gear train a cam arrangement for operating the switch and the locking and a circuit controller which includes a point detector with latch out device All three types of switch machine use the same base casting and have the same mounting layout
43. A gt m 1000 Technology Drive Pittsburgh PA 15219 7 AnsaldoSTS 545 russel Street Batesburo SC 29006 SM 5481 M 3 M 23A M23B ELECTRIC SWITCH MACHINE WITH FIELD WOUND MOTOR BLACK CAST IRON HOUSING SERVICE MANUAL Installation Operation Troubleshooting Copyright 2009 SM 5481 Rev 1 Ansaldo STS USA Inc July 2009 Y 77 AnsaldoSTS Notices Proprietary Notice This document and its contents are the property of Ansaldo STS USA Inc formerly known as Union Switch amp Signal Inc and hereinafter referred to as ASTS USA This document is furnished to you on the following conditions 1 That no proprietary or intellectual property right or interest of ASTS USA is given or waived in supplying this document and its contents to you and 2 That this document and its contents are not to be used or treated in any manner inconsistent with the rights of ASTS USA or to its detriment and are not to be copied reproduced disclosed or transferred to others or improperly disposed of without the prior written consent of ASTS USA Important Notice ASTS USA constantly strives to improve our products and keep our customers apprised of changes in technology Following the recommendations contained in the attached service manual will provide our customers with optimum operational reliability The data contained herein purports solely to describe the product and does not create any warranties With
44. ETECTOR 2 2 Switch Operating and Locking Mechanism Switch operation switch locking and circuit controller operation are all performed by the vertical main crank in the gearbox The main crank is driven either by the motor or hand The main crank drives both the switch operating bar and the slide bar The slide bar carries the lock box with its locking dogs The locking dogs enter notches in the lock rods when the switch SM 5481 Rev 1 July 2009 2 3 5 Introduction and Equipment Overview AnsaldoSTS points are in proper position The slide bar also carries rack teeth which operate the circuit controller Figure 2 1 and Figure 2 2 show the machine to be at one end of its stroke Operation to the opposite end of the stroke involves rotation of the main crank by the motor or by the hand throw lever As the main crank turns it first shifts the slide bar to withdraw the locking dog from the lock rod notch before the switch points start to move The main crank holds the slide bar in mid position which keeps both locking dogs clear of the lock rods The main crank then drives the switch operating bar full stroke to its opposite position Lastly the main crank holds the switch operating bar while driving the slide bar to its full stroke position This movement engages the top locking dog in the corresponding lock rod notch The manner in which the crank imparts these motions can be understood by referring to Figures 2 1 to
45. However the M 23A and M 23B machines as compared with the M 3 machine have a larger vertical dimension see dimensions shown in Figure 3 3 and Figure 3 4 Typical applications are shown in Figure 3 1 and Figure 3 2 The M 23A and M 23B machines have dual control operation by electrical power or by a hand throw lever The M 3 switch machine is not designed for hand operation except that in an emergency it may be operated by inserting a removable hand crank The M 23A and M 23B may also be hand operated by applying a ratchet wrench to the friction clutch adjusting nut The M 23A machine differs from the M 23B in that it uses a different hand throw pinion which affects the hand throw locking Operation by power is the same in both machines In the M 23A operation by the hand throw lever gives the same mechanism stroke including full lock rod protection as operation by power In the M 23B machine however operation by the hand throw lever does not provide lock rod protection Different gear ratios are provided for operating the machines Two gear ratios are available for low voltage machines one to provide relatively fast operation for general use and the other to provide slower operation for use at locations where current draw must be minimized A third gear ratio is used with the high voltage motors Motors and gear ratios can be changed without making changes to the gear box Machines are available for operation at three input voltages
46. NANCE INFORMATION eren nnne nnne nennen nennen 6 1 6 1 Inverting Lock BOX ri UC be Hn Ue e b HIE eren endum 6 1 6 2 Shifting Indication Cams nessuna a e du ed Edu dee e de ne 6 2 6 3 Installing A New Or Rebuilt Circuit 6 2 6 4 Changing Dual Control Mechanism from Right Hand to Left Hand Assembly and Vice Versa ict d ge e ee a dei e Eee ene 6 3 6 5 Changing Selector Lever Position and Selector Lever Interlock 6 6 Selector Lever Assermibly ting aate P EP HDD 6 9 6 6 Dismantling ttr e RU ete tetigi Eae te 6 10 6 6 1 Main Crank Removal odii dec e ze decade eve su deed ra eed edi 6 10 6 6 2 Selector Clutch 6 10 6 6 3 Worm Shaft Removal eite dd ot 6 10 6 64 6 10 6 7 Conversion From High Voltage To Low Voltage or Vice Versa 6 10 7 7 1 8 RAIL TEAM AND TECHNICAL SUPPORT eren 8 1 iv SM 5481 Rev 1 July 2009 77 AnsaldoSTS Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Fig
47. PARTMENT MOTOR ROTATES WIRE 0 WORM GEAR OUTLET zz MOTOR COMPARTMENT 1 LOCK RODS 1 1 Ll ir LS P XN M u Hi 0 LOCKING DOGS 1 4 1 CRANK xis KEG Figure 2 1 M 3 Switch Machine CIRCUIT CONTROLLER 1 M OPERATED BY TMESE RACK TEETH 1 CONTACTS ARE AFFECTED ALSO BY POINT DETECTOR 2 2 SM 5481 Rev 1 July 2009 A 77 AnsaldoSTS Introduction and Equipment Overview NOTE CLUTCH OVERALL HEIGHT IS SUCH THAT TOP TOOTH MUST HAND THROW GEAR BEFORE BOTTOM TEETH CAN DISENGAGE WORM GEAR OR VICE VERSA THUS THE MAIN CRANK IS NEVER FLOATING BUT AT ALL TIMES IS ENGAGED WITH EITHER THE MOTOR OR Io uu THE HAND THROW LEVER WIRE OUTLET THROW LEVCA SLIDE BAR SWITCH MAIN SELECTOR LEVER WHICH OPERATING CRANK SHIFTS SELECTOR CLUTCH BAR ALONG SPLINES ON MAIN CRANK SHAFT sce nore a LOCK HAND THROW LEVER WHICH ROTATES THROW PINION BOX 7 4 CIRCUIT noes 7 CONTROLLER FOR POWT COMPARTMENT 1 DETECTOR J MOTOR ES ROTATES j WORM a j GEAR a 3 INCUN ZEE gt CRANK d 2 Figure 2 2 M 23A Switch Machine LOCKING DOGS CIRCUIT CONTROLLER 15 OPERATED BY THESE RACK TEETH INDICATION CONTACTS AFFECTED ALSO BY POINT D
48. RING LATCH LATCH SPRING SHIELD INTERLOCK POINT DETECTOR BAR CONNECTING RODS INDICATION CAMS CRANK SPRING ECCENTRIC BUSHING POINT DETECTOR CONNECTING ROD ROLLER OPERATING PIN Figure 2 13 Point Detector Parts in Reverse Position and Latched YOKE STOP 2 5 Gear Train The reduction gear train between the motor and the worm gear consists of a pinion on the end of the motor shaft one or two reduction gears clutch gear friction clutch worm shaft and worm gear see Figure 7 3 Note that each reduction gear actually is comprised of two gears a large gear and a small gear assembled together The gear ratio is changed by changing out the reduction gears using the combinations as listed in Table 2 1 Table 2 1 Gear Train Specifications Number of Teeth Machine Nominal Gear 1st 2nd ids Speed Ratio Clutch Reduction Reduction Motor oltage seconds Gear Gear Gear Pinion Gear Pinion Gear Pinion 110 V ac 3 189 to 1 43 43 22 12 110 V dc 3 5 189 to 1 43 43 22 12 20V dc 8 360 to 1 43 32 32 41 22 12 20V dc 15 528 to 1 43 16 16 45 22 12 The pinion end of the motor is supported in an opening in the gear box that locates the pinion properly relative to the other gear centers This opening is sealed by a felt ring with a metal backing on the motor hub The motor can be removed by taking out the two bolts in the motor bracke
49. Rev 1 July 2009 N 77 AnsaldoSTS Parts List 7 PARTS LIST Table 7 1 Parts List for M 3 Switch Machine See Figure 7 1 O Wem Description PartNo Base for M 3 switch machine arranged for telephone jack complete N291056 Base for M 3 switch machine with machined mounting lugs N294752 complete M 3 gear box 360 1 gear ratio complete see Figure 7 3 N287484 M 3 gear box 189 1 gear ratio complete see Figure 7 3 N287485 M 3 gear box 528 1 gear ratio complete see Figure 7 3 N287486 Low voltage dc motor 20 V dc complete for 8 0 and 15 0 second N150293 operation 064177 Circuit controller complete see Figure 7 5 and Figure 7 6 See Table 7 5 and Table 7 6 507372 063117 052607 Plate M146595 Gasket M146738 Washer M147408 J507366 Guide roller M108315 Guide roller M074737 ocking bar N178100 R146444 Operating roller M06106 6 Operating bar M146441 Operating bar lug M146443 Wearing bracket M189024 Key M146782 onduit J034421 Conduit outlet N238223 erminal board N184425 erminal board only M100704 olt J507369 erminal board support MI72662 Motor cutout push rod N180861 trap M162242 Motor cutout contact N226029 olt 460113 Nut 048136 Washer SSS SM 5481 Rev 1 July 2009 7 1 22 Parts List 77 AnsaldoSTS tem PatNe otter pin J048634 Pipe nipple M146723 elt washer M147398 Washer M147409 ock nut 404 8415 Slide bar cover 074911 Circuit controller cover ncludes i
50. S ARE SHOWN TO THE MAIN TERMINAL BOARD FOR A SWITCH HAVING THE RIGHT HAND POINT NORMALLY CLOSED FOR A SWITCH HAVING THE LEFT HAND POINT NORMALLY CLOSED INTERCHANGE THE EXTERNAL LEADS TO TERMINALS B AND AND TO TERMINALS IQ THE MAIN TERMINAL BOARD PN 1508M RELAY N24 52 LO PN 150 0 LS RELAY SWITCH MACHINE MAIN TERMINAL BOARD Figure 2 21 Typical Circuit for Control of DC Low Voltage Switch Machine With Series Parallel or All Parallel Field Motor Figure 2 19 Using PP 51 PN 150BM and PN 150SO Relays SM 5481 Rev 1 July 2009 2 27 Introduction and Equipment Overview AnsaldoSTS OY 0 MOTOR CONNECTIONS FOR ALL SERIES FIELO OC MOTORS FURNISHED PRIOR TO SOME DATE IN 1953 EXACT DATE FUANISHED UPON REQUEST ANO FOR NOTE NUMBER IN CIRCLE REPRESENTS ALL MOTOR NUMBER OF TERMINAL NUMBER NOT IN CIRCLE SHOWS 6 NUMBER OF TERMINAL WHICH Loy FIELO OTHER END OF WIRE 1 CONNECTED 8 B MOTOR COMPARTMENT CIRCUIT CONTROLLER CIRCUIT A HEATER WHEN USED CONTROLLER 8 10 WHEN USED 38 37 o x A MOTOR 9 Boin cer D 6 SELECTOR LEVER aoe lt C3 23 19 2 i 14 EN O O OF i sw les he ug 5 9 89 RO Ca OT c 444 DIRECTION 49 OF NEXT Eqs 2 ROTATION Figure 2 22 Wiring Diagram for AC
51. SEMBLY 18 24 26 j 4 37 3 DEN E Ep A ORL M ve i 50 29 514612 5 10 15 12 fj a 16 42 19 39 Figure 7 3 Gear Box for M 3 Switch Machine SM 5481 Rev 1 July 2009 7 13 Parts List 77 AnsaldoSTS Table 7 4 Parts List for M 23A and M23 B Switch Machine Gear Box See Figure 7 4 Wem PartNo Gear box includes bushings items 81 to 86 N286623 Top bearing M274599 Worm shaft M286612 Clutch housing M172752 Clutch end plate M146575 lutch plate M146574 lutch plate 146573 Clutch disk M146650 Clutch spring M239322 Clutch adjusting nut M438402001 otter pin 048636 elt gasket 047335 Washer M245192 late M147400 Gasket 147410 earing 274596 5256583 286593 Worm gear M286620 Z A HandthowbevepinonforM 2SAmachnes 285616 21 8 Handthrow bevel pinion for M 23B machines M286617 72 Mand throwbevelgear 23 Main crank 0 crank Ospe mws lever shaft men Seleciorlevershat o haft M149700 First reduction gear 360 1 gear raio 2865 First reduction gear 528 1 28657 First reduction gear 189 1 gear raio M2865786 Second reduction 360 gear raio 2868 Second reduction gear 828 1 gear rato 286580 Sleeve not used with 189 1 gear ratio gearbox M286597 Sleeve not used with 1891 gear rati
52. Shop Maintenance CLUTCH HOUSING CLUTCH SPRING N LA AH 5 AN OIL SEAL CLUTCH PLATE FABRIC DISC 1 3 8 1 1 5 8 1 5 16 1 716 DIAM DIAM 3 8 DRILLED HOLE 173641 d 2 ey SEC 159 HOLE 21 DRILL SIZE PINS PRESSED IN SOCKET FOR 11 48 11 16 LEVER ROD 1 PIPE TEMPORARY TOOL MAY BE MADE BY FILING PINS ON THE END OF A PIECE OF 1 PIPE AS SHOWN Figure 5 4 Friction Clutch Assembly and Special Tool for Installing Gland Nut 5 2 2 Motor Commutator Cleaning The motor commutator should be kept smooth and free from grease and oil To dress the commutator use a fine grain commutator stone or a piece of No 00 sandpaper Never use emery cloth for the commutator or brushes Commutators should not be undercut The brushes should be free in their holders and the pressure should be maintained between 3 4 and 1 Ib When new brushes are installed be sure to use the proper grade and fit the brushes to the commutator using No 00 sandpaper 5 3 Maintenance Tools List Maintenance tools are listed below Ordering reference for complete set of tools is SBM UO296406 Drawing 12764 Sh 1 e screw driver e 10 in screw driver SM 5481 Rev 1 July 2009 5 9 Shop Maintenance 5 10 6 in slip joint pliers 12 oz machinist s hammer Insulated
53. acie ence ied eee e neue Yee na eae 2 9 2 4 2 Indication Contacts iind ie eee OD qe ed eem 2 11 24 3 Polnt Detector 2 12 2 5 Geat Train fce at t m Rabe eiie 2 15 2 6 Operation By Hand Crank 2 16 2 7 Dual Control Mechanism M 23A and 23 2 17 2 7 1 General Functional 2 17 2 7 2 Operation by Selector i 2 17 2 7 3 M 23B MeOCHANISIM niente ie mese ete Mex 2 20 2 74 ever Interlock on tme MN 2 21 2 8 eio c C 2 21 2 9 Overload Protectiori i i not aii cei tore eed 2 22 2 10 Heaters IM EE 2 23 2711 MIFITIg eoa Oe mias 2 24 3 INSTALLATION iiU rei eee 3 1 3 1 E ath erii 3 1 3 2 Installation 442244 0 3 3 3 21 RM 3 3 3 2 2 Drain Plug Installation Only Where 3 3 3 2 2 1 Motor Compartment Drain 5 3 4 3 2 2 2 Circuit Controller Compartment Drain 9 3 4 3 253 WING zs iiit os ERR IDEE RUE feng RUD EE 3 4 3 2 4 Initial Gear 11 eines e eite seen d
54. bricant to the teeth of the spur gear also see 4 1 4 Put the remainder of the lubricant into the worm gear compartment only Before leaving the factory all other working parts of the machine are sufficiently well lubricated to be placed in service NOTE When applying lubricant it is not necessary to remove the black compound that coats some parts This compound was applied to provide protection against corrosion during shipment and storage 3 2 5 Position Indication of Hand Throw Lever M 23A and M 23B only Apply letters NORMAL and REVERSE to the hand throw lever to correspond with the switch position 3 4 SM 5481 Rev 1 July 2009 c 4 AnsaldoSTS Installation 3 2 6 Hand Throw Lever Stands Adjustment M 23A and M 23B only Adjust the height of the hand throw lever stands so that the hand throw and selector levers rest in a horizontal position parallel to the cover of the gear box 3 2 7 Switch Operating Rod Installation and Adjustment Connect the switch operating rod and adjust the rod nuts at the switch basket to obtain the proper pressure at the switch points Do not apply excessive pressure at switch points 3 2 8 Lock Rod Installation and Adjustment The flat plate snow cover must be assembled on the track side where applicable when installing the lock rods With the circuit controller cover removed and the machine at mid stroke install the lock rods Ensure that the rods are ass
55. cts the direct finger contact from opening the motor circuit under normal conditions yet assures a circuit in case the segment should become coated with frost Referring to Figure 5 1 and Figure 5 2 note that each motor control segment is nested on the tapered hub of its insulating bushings The cone engagement has teeth in both elements which prevents the segment from rotating relative to the shaft while the shaft end nuts are pulled up but which permits the segment to be shifted around the shaft in 4 degree steps when the shaft end nuts are backed off These segments are factory set to provide approximately 1 4 in opening between the segment ring and the end of the contact finger Fl Sect Y Y and Z Z and approximately 1 8 in margin against opening under finger F3 Sect W W and X X when the machine is in its full stroke position operated as far as it will go by rotating the friction clutch while in motor position See Section 5 1 2 for instructions for adjustment of this opening and closing of the contact springs 2 4 2 Indication Contacts The four sets of indication contacts operate as two pairs One pair indicates the normal position and the other pair indicates the reverse position Each pair is operated by a single cam and both are subject to point detector operation Wiring and wire nomenclature are standardized so that the left pair of contacts L in Figure 2 8 and N N of Figure 5 1 is used to indicate normal
56. e see Figure 7 5 N287074 0001 238 gear box 86 1 gear ratio left hand complete see Figure 7 3 N287075 238 gear box 80 1 gear ratio right hand complete see Figure 7 3 N287075 0001 N 238 gear box 189 gear ratio left hand complete see Figure 7 3 N287076 238 gear box 189 1 gear ratio righthand complete see Figure 7 5 N287076 0001 N 238 gear box 528 1 gear ratio left hand complete see Figure 7 3 NZ87077 238 gear box 528 1 gear ratio right hand complete see Figure 7 5 N287077 0001 Low voltage dc motor complete 20 V dc for 8 0 and 15 0 second N150293 operation Figh votage de motor complete 1055 048 AC motor complete 110 793 064068 064066 064177 Circuit controller complete see Figure 7 5 and Figure 7 6 See Table 7 5 and Table 7 6 J507372 063117 J052655 M146595 M146738 M147408 J507366 M108315 M074737 N178100 R146444 Operating roller M06106 6 Operating bar M146441 Operating bar lug M146443 Wearing bracket M189024 Key M146782 Conduit J034421 Conduit outlet N238223 erminal board N184425 erminal board only M100704 olt J507369 erminal board support MI72662 SM 5481 Rev 1 July 2009 77 AnsaldoSTS Parts List Wem Description PartNo Motor cutout contact N226028 Washer J047773 2 Feltwasher 40 tem 112 829 _ Bushing J475077 Bolt J050034 Bot
57. e procedure provided in Section 4 1 4 NOTE If the contact springs motor control segments or indication cams show any signs of pitting corrosion or general deterioration they must be replaced 4 1 3 Drain Plug Removal Only Where Required CAUTION If drain plugs are installed they must be periodically removed to drain water from the compartments especially prior to freezing temperatures Water accumulation especially with freezing temperatures could cause equipment damage NOTE Drain plugs are provided for machines installed where blowing sand or dirt could enter the drain holes and cause mechanical failure The plugs should only be installed in locations where this condition is present 4 1 3 1 Motor Compartment Drain Plug Removal Two 3 8 in pipe plugs are located under the crank case compartment identified as Z in Figure 4 1 and Figure 4 2 These plugs should only be installed if machines are located where blowing sand or dirt could enter the machine and cause a failure Periodically especially before freezing temperatures occur remove these plugs to drain water that may have accumulated in the compartment See note and caution statements in Section 4 1 3 above SM 5481 Rev 1 July 2009 4 3 gt Field Maintenance 4 AnsaldoSTS 4 1 3 2 Circuit Controller Compartment Drain Plug Removal Two slot head bolts with lock washers function as drain plugs in the circuit cont
58. ear Box Right Hand Installation 6 5 Changing Selector Lever Position and Selector Lever Interlock In general the positions of the selector and hand throw levers will be as shown in Figure 6 3 and the interlock will ordinarily permit the selector lever to be returned to the MOTOR position when the hand throw lever is in either the normal or reverse position 6 6 SM 5481 Rev 1 July 2009 m E 7 AnsaldoSTS Supplemental Maintenance Information Certain deviations from the usual standards are possible The various arrangements are each reference letter A through D corresponds with one of the four diagrams in Figure 6 3 A Both levers must always be on the field side of the machine that is on the left side for left hand machine for left hand layout and on the right side for right hand machine for right hand layout To change from right hand to left hand or vice versa see Section 6 4 The hand throw lever will always move the switch in the direction to close the near point when the lever is operated toward the motor end of the machine This characteristic cannot be changed The cast markers N and R however may be attached to the hand throw lever to show either N or for this position For the standard arrangement the selector lever is assembled to be toward the motor end of the machine when the lever is in its MOTOR position as shown in Figure 6 3 When desired however the lever can readily be
59. embled such that the locking dogs in the lock box will enter the narrow notches first In some instances it may be necessary to invert the lock box to suit the rod notches see Section 6 1 Preliminary adjustment should be made by setting the nuts so that the narrow notches are approximately centered on the locking dogs at each end of the stroke This requires that the M 23B machine be operated by power or by turning the friction clutch housing by applying a ratchet wrench to the clutch adjusting nut with the selector lever in the MOTOR position and power disconnected The upper narrow notch can be seen directly Index marks are provided on the top surface opposite the notched ends for the lower notch Make final adjustments according to the applicable instructions in the AREMA signal manual or to applicable railroad instructions 3 2 9 Point Detector Bar Installation and Adjustment Install the point detector bar and its connecting rod first remove shipping closures from the machine Adjust to check switch point according to instructions in the AREMA signal manual or to railroad instructions When making adjustments work first with adjustment for the far switch point using the nuts on the track end of the point detector bar Then adjust for the near switch point working at the field end of the point detector bar 3 2 10 Indication Cam Check Check that indication cam N see Figure 2 9 has its notch up when machine is in the normal posit
60. for the ball to meet the requirements in the preceding paragraph Similarly if a stop screw 15 installed in one of the ball recesses in the hand throw lever hub as previously described it must be shifted so as to be on the side of the shaft opposite to that for MOTOR position of the selector lever SM 5481 Rev 1 July 2009 6 9 EN Supplemental Maintenance Information 7 AnsaldoSTS 6 6 Dismantling Tips 6 6 1 Main Crank Removal When the main crank is removed it must be removed through the bottom of the machine To do so first remove the bottom cover and the wear plates supporting the operating bar This allows the operating bar and crank roller to drop down Then rotate the crank by turning the friction clutch by hand until the bottom end is crosswise of machine Unscrewing the nut at the top of the main crank shaft will then permit the crank to drop out through the bottom Removal of the main crank will release the worm gear and the slide bar 6 6 2 Selector Clutch Removal For dual control machines M 23A and M 23B removal of the selector clutch and associated parts can be understood from the information given for changing from right hand to left hand assembly or vice versa However when reassembling the selector clutch note that its overall height including top and bottom teeth is 5 9 32 in maximum to 5 17 64 in minimum This dimension is adjusted by turning the top and bottom parts of the clutch assembly with respect to each o
61. for the control of switch machines using the standard PN I50SO PN ISOBM and PP 151 plug in relays Figure 2 20 Figure 2 23 Figure 2 26 show typical circuits using the shelf relays DP 25 OR 11 and the earlier style plug in types PNP 69 and ORP 60 relays These typical circuits show wiring of the relays that corresponds to the internal wiring diagrams for standard dc switch machines as applied to single switches 2 24 SM 5481 Rev 1 July 2009 AV i 7 AnsaldoSTS Introduction and Equipment Overview The current style of plug in switch control relay is the PP 151 used in conjunction with the PN 15 relay This is the equivalent of the shelf type DP 25 or the earlier style plug in PNP 69 relay The PP 151 is a magnetic stick relay used for reversing the polarity of the switch motor and keeping the operating winding and stick winding of the overload relay in agreement The PN ISOBM 15 a biased relay with magnetic heavy duty contacts and is used for closing the switch motor circuit and opening it under abnormal conditions These two relays in combination are also self checking because of the bias feature on the PN 150BM relay The DP 25 PNP 69 and PN ISOBM relays are capable of breaking stalled switch motor current in excess of 50 A at 110 V de For switch machine installations with shelf type relays the DP 25 is used It is available with two neutral magnetic blowout contacts for a double break switch motor circuit Conversion of the DP
62. h which projects into the motor compartment The friction clutch protects the mechanism from shock at the end of the stroke The clutch also protects the mechanism from shock if travel is stopped suddenly by an obstruction in the switch point or from shock due to lock rod fouling The gear box also houses the mechanism for operation by a hand crank M 3 or by the dual control mechanism M 23A and M 23B Circuit controller compartment This compartment contains the circuit controller locking features point detector device and a separate set of motor cutout contacts The motor cutout contacts open the motor circuit and controls a line circuit when the hand crank is inserted in the machine M 3 or the selector lever is moved out of the motor position M 23A and 23 In addition to the elements listed above the slide bar runs lengthwise in the base of the machine It is driven by the main crank and operates the lock box in the circuit controller compartment Under the slide bar is the switch operating bar which extends crosswise through the gear box The switch operating bar is driven by the main crank The external switch operating rod attaches to the switch operating bar SM 5481 Rev 1 July 2009 2 1 5 Introduction and Equipment Overview AnsaldoSTS SAAN y illod SLIDE BAR SWITCH MAIN HAND CRANK OPERATING CRANK INSERTED HERE BAR LOCK BOX FOR POINT DETECTOR ROD CIRCUIT CONTROLLER COM
63. hand throw lever position with the position of the switch when engaged The lower part has five teeth for engagement with the worm gear The upper and lower parts are separable only when the assembly is removed from the splined shaft this arrangement being used to permit assembly of the spring and two spring cups The spring cups are ordinarily held tightly against the upper and lower flanges of the core by the compression force of the spring When the selector lever is operated 180 from position shown this action lifts one end of the selector clutch yoke so that its lower rollers push upward against the underside of the flange on the lower spring cup If the switch is in the position corresponding to the position of the hand throw lever so that the tooth of the hand throw pinion is aligned to receive the tooth of the clutch for hand operation and assuming no restraining friction between the teeth at the bottom the selector clutch assembly will shift upward without deflection of the spring At times however there may be a torque load on the lower teeth when the selector lever is operated for example if the switch is stalled on an obstruction and this may cause sufficient friction to hold the clutch down while the yoke is lifted As a result the spring will be compressed as the lower spring cup is lifted by the lower rollers on the yoke until the top of the lower spring cup engages the bottom of the upper spring cup Further operation of
64. he travel of the main crank is ample however to lock the switch operating bar against back thrust 2 20 SM 5481 Rev 1 July 2009 n i 7 AnsaldoSTS Introduction and Equipment Overview a BOTTOM VIEW OF HAND b BOTTOM VIEW OF HAND THROW BEVEL PINION THROW BEVEL PINION FOR M 23A MOVEMENT FOR M 23B MOVEMENT Figure 2 16 Bottom Views of Hand Throw Bevel Pinions 2 7 4 Lever Interlock The hand throw and selector levers are interlocked by means of a steel ball and suitable recesses in the lever hubs to prevent operation of the hand throw lever unless the selector lever is in the HAND position The lever interlock also prevents return of the selector lever from the HAND position unless the hand throw lever is in one or the other of its full stroke positions See Figure 6 3 The interlock can also be assembled to require that the hand throw lever always be returned to NORMAL position before the selector lever can be returned from the HAND position Also it is possible to apply the selector lever to its shaft in either of two ways 180 apart so as to have the MOTOR position of the selector lever toward either the motor end or the circuit controller end of the machine for both right hand and left hand assemblies See Section 6 5 for procedures for changing selector lever position and interlock 2 8 Motors Motors are available for input voltages of 20 V dc 110 V dc or 110 V ac at 25 50 or 60 Hz The same motor is used for a
65. ian 3 4 3 2 5 Position Indication of Hand Throw Lever M 23A and M 23B only 3 4 3 2 6 Hand Throw Lever Stands Adjustment M 23A and M 23B only 3 5 3 2 7 Switch Operating Rod Installation and Adjustment 3 5 3 2 8 Lock Rod Installation and Adjustment 3 5 3 2 9 Point Detector Bar Installation and 3 5 3 2 10 Indicatiori Cam Check idee e ded ae tede ete 3 5 3 2 11 Final Adjustment of Hand Throw Lever Stands M 23A and M 23B Only 3 5 3 2 12 Check of Operation With Obstruction Friction Clutch 3 6 4 lt FIELD MAINTENANGE nen IE tere Pe E ie ERE Pe e 4 1 4 1 Preventive Maintenance 4 1 41517 IiSDectlonc xs sd See UM 4 1 SM 5481 Rev 1 July 2009 iii mA Table of Contents AnsaldoSTS 4 1 1 1 Switch Installation Area Inspection 4 1 Switch Machine 4 1 4 1 2 Cleaning idt d e dog qe d nid ed 4 2 4 1 2 1 Circuit Controller Compartment Cleaning Materials Required 4 2 4 1 2 2 Circuit Controller Compartment Cleaning 4 3 4 1 3 Drain Plug Removal Only Where 4 3
66. identified by A in Figure 4 1 and Figure 4 2 Apply to Point detector bar bearings Apply to grease fittings Apply until surplus is visible at edges of bearings Operating bar wearing plates Apply to grease fittings Selector and hand throw lever shaft bearings Apply to grease fittings Apply until surplus is visible at edges of bearings Pressure gun grease 7650 01 or a heavy oil with viscosity of 120 200 at 210 F SAE 140 See points of application identified by in Figure 4 1 and Figure 4 2 Apply to Surfaces of slide bar lock box and rack Use a brush or paddle for application 4 4 SM 5481 Rev 1 July 2009 m 7 AnsaldoSTS Field Maintenance C Medium body motor oil with viscosity of 185 220 at 130 F SAE 30 See points of application identified by in Figure 4 1 and Figure 4 2 Apply to Motor bearings Apply to oil cup at both ends of the shaft Indication circuit controller trunnion yoke bearings and point detector linkage Spur gear journals machines are equipped with Oilite bushings Apply to holes in box casting reduction gears and clutch gear NOTE Apply oil sparingly to clutch gear bearing to prevent seepage through clutch shaft packing to friction disks Top crank bearing Fill recess The machine See points of application identified by in Figure 4 1 and Figure 4 2 This is a low temperature all weather lubricant that changes little
67. iews of Hand Throw Bevel 2 21 Typical Motor Connections eee aa AEREA entrent nan nnne nennen nnn nnns 2 22 Heaters for Circuit Controller and Motor 2 24 Wiring Diagram for DC Low Voltage Switch Machine With Series Parallel or AIL Parallel ete rr e RR gebe Hosp he e rise ae aA 2 26 Typical Circuit for Control of DC Low Voltage Switch Machine With Series Parallel or All Parallel Field Motor Figure 2 19 Using DP 25 or PNP 69 and OR 11 or ORP 60 Relays 2 27 Typical Circuit for Control of DC Low Voltage Switch Machine With Series Parallel or All Parallel Field Motor Figure 2 19 Using PP 51 PN 150BM and PN 150SO Relays sse meer nnns 2 27 Wiring Diagram for AC High Voltage Switch Machine and DC High Voltage Switch Machine With Series Parallel Field 2 28 Typical Circuit for Control of DC High Voltage Switch Machine With Series Parallel Field Motor Figure 2 22 Using DP 25 or 69 and OR 11 or ORP 60 Relays 2 28 Typical Circuit for Control of DC High Voltage Switch Machine With Series Parallel Field Motor Figure 2 22 Using PP 51 PN 150BM 15050 atre eth eir ehe didis 2 29 Wiring Diagram for DC High Voltage Switch Machine With Split Field Motor 2 29 Typical Circuit for Con
68. in the scope of the attached manual it is impossible to take into account every eventuality that may arise with technical equipment in service Please consult an ASTS USA local sales representative in the event of any irregularities with our product ASTS USA expressly disclaims liability resulting from any improper handling or use of our equipment even if these instructions contain no specific indication in this respect We strongly recommend that only approved ASTS USA spare parts are used as replacements SM 5481 Rev 1 July 2009 Revision History Rev Dae Nature of Revision July 2009 Section 5 1 3 revised ii SM 5481 Rev 1 July 2009 i 4 AnsaldoSTS Table of Contents Table of Contents 1 INTRODUCTION AND EQUIPMENT nnne nennen nnn nnn 1 1 1 1 Introduction Put ope qe Fue ER eerie 1 1 1 2 Equipment OVerVIGW ra iier deett o Oe t i rn ere di tee 1 1 2 FUNCTIONAL DESCQCRIPTION erinnerte EE 2 1 2 1 General Description of Operating 2 1 2 2 Switch Operating and Locking Mechanism sse eee 2 3 2 3 Switch Point Locking eod Ee de pec dete do Ro e v Ee ducc 2 7 2 4 Circuit COMMON CR DOR 2 8 2 4 1 Motor Control Contact
69. ion Check also that cam P see Figure 2 8 has its notch up when machine is in the reverse position If these cams are not in the correct positions adjust following the instructions provided in Section 6 2 3 2 11 Final Adjustment of Hand Throw Lever Stands M 23A and M 23B Only Make final check of adjustment of hand throw lever stands to assure that transfer from power to hand operation is possible under all conditions Follow the five steps listed below SM 5481 Rev 1 July 2009 3 5 x Installation 4 AnsaldoSTS 1 Remove gear box cover so the action of the selector clutch and its relation to the hand throw pinion can be observed see Figure 2 14 2 With the hand throw lever in NORMAL position operate the machine by power to the reverse position and then to the normal position Move the selector lever to the HAND position Check that the selector clutch shifts up and engages the tooth on the bottom of the hand throw pinion Also check that the hand throw lever will operate the machine If the selector clutch fails to shift up full stroke adjust the height of the normal hand throw lever stand to bring the clutch teeth into proper alignment 3 Repeat of step 2 for opposite end of stroke With the hand throw lever in REVERSE position operate the machine by power to normal position then to reverse position Move the selector lever to the HAND position Check that the selector clutch shifts up and engages the tooth on the bottom
70. isted below 1 With switch machine at the end of stroke to enable roller to drop into cam notch adjust reinforcing spring N by relieving tension with a spring bender to break away from the contact spring at a load of 8 to 11 Ib Check clearance between cam and roller with roller in cam notch Clearance must be between 3 64 inch to 5 64 inch If clearance is not within this range re adjust reinforcing spring to obtain correct clearance Repeat the previous step to recheck reinforcing spring break away load Check that slotted ends of contact springs M are in alignment and push evenly on fixed contact W and on short circuiting strip S Also check that both contact springs of each pair make and break at the same time It may be necessary to slightly bend the contact fingers to meet this requirement Check for 1 8 in minimum dimension between end of indication contact springs M and short circuiting strip S Check for 3 64 in minimum clearances between springs M and fixed contact and between springs M and short circuiting strip S With contacts at indicating position check gap clearances at Y Clearances should be 3 64 in to 5 64 in Check contact force between indication contact springs M and fixed contacts with spring scale at X Contact force should be 1 5 to 2 25 lb Adjust reinforcing spring breakaway load if necessary Recheck to make sure breakaway load is 8 to 11 Ib With contacts made against short circuiting st
71. l Control Mechanism M 23A and M 23B 2 7 1 General Functional Description Switch operation switch locking and circuit controller operation are all performed by the vertical main crank in the gear compartment see Figure 2 2 The main crank is always in engagement with either a the motor through the reduction gear train and its friction clutch or b the hand throw lever through the hand throw pinion The selector clutch slides along splines on the shaft of the main crank and is shifted up or down by the selector lever To permit the selector lever stroke to be completed even though the top tooth of the selector clutch may not be in alignment with the tooth space in the hand throw pinion hub when shifting from motor position shown in Figure 2 2 to hand throw position connection between the selector lever and the selector clutch is made through a coil spring mounted on the selector clutch The selector clutch will snap into engagement with the hand throw pinion when the hand throw lever is operated to a position corresponding with the switch position This spring connection acts similarly when returning the selector lever to the motor position however in this case it is the motor that must be operated to align the worm gear hub teeth to receive the selector clutch teeth Note that the main crank remains engaged with its original connected driving element until it is engaged with the other element see note A in Figure 2 2 In Figure 2 2
72. led in motor and circuit controller compartments remove plugs and allow any moisture to drain Reinstall plugs See Section 4 1 3 for detailed procedure 6 Check that motor control contacts indication contacts motor cutout contacts and associated cams and linkages are clean and do not show excessive wear see Section 4 1 2 7 Check that all switch machine parts are properly and adequately lubricated see Section 4 1 4 8 Check that conduit between switch machine motor compartment and junction box is not damaged 9 Remove two screws securing access plate over motor commutator Check that commutator is smooth and clear Check that commutator brushes are free in their holders and are not excessively worn 4 1 2 Cleaning The circuit controller compartment should be cleaned at the time of inspection to assure proper electrical operation 4 1 2 1 Circuit Controller Compartment Cleaning Materials Required e Degreaser Lint free cloths 4 2 SM 5481 Rev 1 July 2009 c E lt 7 AnsaldoSTS Field Maintenance 4 1 2 2 Circuit Controller Compartment Cleaning Procedure 1 Dampen a lint free cloth with degreaser Wipe motor control indication and motor cutout contact springs free of any accumulated dirt Dry with a clean lint free cloth 2 Repeat step 1 for motor control segments indication cams yoke operating levers point detector connecting rods crank and crank springs 3 Lubricate cleaned areas following th
73. ll low voltage machines by proper assembly of the terminal connectors on the motor terminal board for the motor field connections Machines having a 528 to 1 gear ratio nominal speed 15 seconds should have the terminal connectors assembled as shown in diagram A of Figure 2 17 resulting in series parallel connection of the field coils Machines having a 360 to 1 gear ratio nominal speed 8 seconds should have the terminal connectors assembled as in diagram B of Figure 2 17 to provide a parallel parallel connection of the field coils The same motor is used for all dc high voltage machines by proper assembly of the terminal connectors on the motor terminal board for the motor field connections Machines that use high voltage motors dc or ac have a 189 to 1 gear ratio nominal speed 3 5 seconds for DC 3 0 seconds for AC Series parallel field connections shown in diagram C of Figure 2 17and split field connections in diagram E of Figure 2 17 for dc high voltage machines are obtained by proper connections on the motor terminal board and the main terminal board Connections for the motor of the ac high voltage machines are shown in diagram of Figure 2 17 high voltage motors are interchangeable by making proper connections at the motor terminal board and the main terminal board with the proper change in power source SM 5481 Rev 1 July 2009 2 21 A x Introduction and Equipment Overview AnsaldoSTS For low voltage moto
74. nce 7 AnsaldoSTS 6 Remove power from the machine 7 Latch the padlock hasp onto the staple Ensure that the hasp is fully seated in the staple notch Measure the exposed length of pushrod A 8 Remove the gear box cover 9 Check the length of spring E The total length including washers should be 16 mm Adjust nuts N as necessary to obtain this length This ensures that the spring will not act as a stop by becoming fully compressed 10 Depress pushrod A to the distance measured in Step 6 With the pushrod A in this position the yoke B should be about 16 mm from the machined stop surface of the top bearing C If not loosen locknut O and adjust the pushrod A to obtain this clearance This adjustment ensures maximum travel of the linkage 11 Reinstall the gearbox cover using only two of the bolts removed in Step 8 12 Latch the padlock hasp onto the padlock staple Ensure that the hasp is fully seated in the machined notch of the staple 13 Check the adjustment of the pushrod A by pressing on the latched padlock hasp There should be about 16 mm free play between the edge of the staple notch and the front of the hasp then a solid connection should be felt 14 If necessary repeat Steps 8 through 13 to adjust the free play to about 16 mm then tighten the pushrod locknut O 15 Reinstall the gearbox cover using the bolts removed in Step 8 Latch the padlock hasp onto the padlock staple
75. o gearbox 2865 M286587 J048925 M169502 M174967 475187 048057 048613 M169503 Selector clutch for 5 spline main crank N302735 40a Selector clutch for 10 spline main crank M286672 7 14 SM 5481 Rev 1 July 2009 7 AnsaldoSTS Bescipion 4 4 2 3 Selector clutch yoke N286622 Roller M217537 Roller M217538 Roller stud M261981 Eccentric bushing M261980 crew hex head 1 2 13 x 6 in 050251 Washer Gear train cover haft am follower rod M286614 Washer M286584 utout rod adjustment M286613 2060115 M286595 M286585 oke support M274598 ever shaft bearing M274603 haft M292426 ever support M274602 Gear box cover N288677 Washer 079694 Lubrication fitting 1 8 in pipe thread 039137 Washer flat cad pl 7 8 in 047508 Lock washer cad pl 7 8 in 047742 Jam nut cad pl 7 8 in 048069 Set screw square head 3 8 16 x 1 1 2 in 050621 am nut hex head cad pl 3 8 16 in 048010 Parts List Lock washer cad pl 3 8 in J4751210113 Cap screw hex head cad pl 1 2 13 x 4 3 4 in 050107 Lock washer cad pl 1 2 in 047783 Cap screw hex head cad pl 1 2 13 x 1 1 2 in 050092 Lock washer cad pl 1 2 in 047783 Cap screw hex head cad pl 1 2 13 x 1 3 4 in 050095 Lock washer cad pl 1 2 in 047783 Cap screw hex head cad pl 1 2 13 x 1 1 4 in 050090 Lock washer cad pl 1 2 in 047783 Cap screw hex head tin pl 1 4 20 x 3 4 in J500097
76. on all installations This means that in some applications the left pair of contacts must indicate the end of the stroke that has the slide bar toward the lock end of the machine In other applications the left pair of contacts must indicate the end of the stroke that has the slide bar toward the motor end of the machine Similarly the right pair of contacts M in Figure 2 8 must indicate sometimes one end and sometimes the other end of the slide bar stroke so as to indicate reverse When cam has its notch up the associated normal pair of contacts L in Figure 2 9 closes except when prevented by point detection as explained in Section 2 4 3 For the right hand layout with right hand point normally closed cam N has its notch up when the slide bar is at that end of its stroke where it is nearest the motor end of the machine as illustrated At the same time cam P is holding its associated pair of contacts up Sect P P amp Sect N N of Figure 5 1 When the machine is operated toward the opposite end of its stroke the notch in cam N rotates counterclockwise out from under the follower forcing the contacts up While the switch is in transit both the normal and the reverse indication contacts are up engaging the shunting strip S S in Figure 2 8 and Figure 5 1 to provide a shunt for the indication relay When the machine leaves the factory this strip 1 assembled to connect one normal and one reverse contact but may be reassembled
77. oo high To perform these checks operate the selector lever to the MOTOR position when the worm gear is not in position to receive the selector clutch so that the teeth of the clutch for motor operation see Figure 2 14 ride on top of the corresponding teeth of the worm gear In doing this insert 1 8 in length of a 14 AWG soft copper wire between the opposed teeth The eccentric bushings should be adjusted the same degree or so that with the through bolt tight when the selector lever is thrown to horizontal position for MOTOR operation the force between the opposed teeth will crush the wire to not more than 1 32 in thickness Also check that upper rollers are free to turn when selector clutch is fully engaged with the worm gear 5 2 Corrective Maintenance 5 2 1 Clutch Felt Packing Replacement The friction disks must be kept free of oil If clutch disks are oily and it is found that the oil is entering along the shaft it is recommended that the felt packing be replaced To replace felt packing follow the procedure listed below SM 5481 Rev 1 July 2009 5 7 1 10 11 12 13 14 5 8 x Shop Maintenance 7 AnsaldoSTS Swing terminal board out to provide access Measure the length of clutch spring before disassembly Record this dimension for use in re assembly Remove the cotter pin adjusting nut and clutch spring Slide the clutch housing off the shaft Remove the fabric disks and clutch plates
78. oves in the proper direction Before tightening circuit controller frame hold down bolts check that full stroke controller shaft rotation yields a symmetrical contact relationship at both ends of the stroke Shift gear tooth engagement if necessary to obtain this condition Install and tighten all hold down bolts 10 Insert a tie wire is in the form of a figure 8 through each pair of idler bolt heads 6 4 Changing Dual Control Mechanism from Right Hand to Left Hand Assembly and Vice Versa To change a dual control mechanism from right hand to left hand or vice versa follow the procedure listed below Steps 1 through 6 describe the disassembly procedure Steps 7 through 17 describe the re assembly procedure See Figure 6 1 and Figure 6 2 References are made to these figures throughout the procedures Disassembly Steps l Remove covers for gear box and MOTOR compartment Place hand throw lever in NORMAL position and selector lever in MOTOR position Remove Al A2 and A4 securing top bearing C yoke support H lever support K and lever shaft bearing M Remove nut and washer B2 from top of main crank and lift top bearing C from dowel pins carefully to prevent bending SM 5481 Rev 1 July 2009 6 3 EN Supplemental Maintenance Information AnsaldoSTS 4 Remove rectangular key C1 from top bearing bushing C2 hand throw pinion D and spacing collar E on top end of crank 5 Lift hand throw lever to
79. points the clutch should slip slightly at both ends of the power stroke Friction clutch adjustment should be checked periodically to assure that the clutch slips at a torque that will protect the mechanism from shock yet be adequate to sustain normal operating loads Also the clutch must slip at the proper torque to assure correct operation of the overload relay Follow the procedure listed below to check friction clutch adjustment l 4 8 Connect a temporary jumper across the binding posts of the pick up coil on the overload relay If Fusetrons are installed on the 110 V dc side of a bridge rectifier connect a temporary jumper across these fuses Insert an ammeter in the motor circuit by connecting the negative ammeter lead to binding post A on switch machine terminal board and the positive ammeter lead to binding post 5 or 10 depending upon switch point position With an obstruction between the switch point and the stock rail operate the machine by power When the switch point jams against the obstruction the worm gear and worm shaft will be stopped but the motor should continue to run slipping the friction clutch Current drawn by the motor with clutch slipping should be within 1096 of the nominal value shown in Table 4 3 for the particular motor and gear ratio of the machine Table 4 3 Friction Clutch Slip Adjustment Motor Gear Current Drawn Nominal Speed Voltage Ratio See Note seconds MOVac 1891
80. reassembled to be toward the circuit controller end of the machine for MOTOR position The interlock can be arranged to suit The cast MOTOR and HAND marker plates on the selector lever are interchangeable The lever interlock can be arranged to either 1 allow the selector lever to be returned to MOTOR position when the hand throw lever is in the NORMAL or the REVERSE position or 2 require the hand throw lever to be in NORMAL position only before the selector lever can be returned to MOTOR position Machines are shipped with option 1 assembly unless order specifies that hand throw lever must be normal only SM 5481 Rev 1 July 2009 6 7 Y Supplemental Maintenance Information 7 AnsaldoSTS ERIO LEVER INTERLOCK 2 al BALL 9 cA 0000 o STOP SCREW 5 S STOP SCREW WHEN USED o o WHEN USED UJ DIAGRAM L H LAYOUT DIAGRAM B R H LAYOUT L H POINT NORMALLY CLOSED R H POINT NORMALLY CLOSED AS RAN YA WHEN USED 2 STOP SCREW WHEN USED 0000 er 0000 7100 oooo EJ
81. rip S check at front end of contact fingers for a load of 1 5 to 4 Ib 5 1 3 Motor Cutout Contact Adjustment for M 3 Switch Machine See Figure 5 3 for a detail view of the motor cutout contact and actuator arrangement 1 2 Remove the circuit controller cover With the hand crank cover closed padlock hasp seated in the staple notch check that the plunger end of the pushrod F clears the contact actuator bracket H by 1 6 to 3 1 mm see enlarged view Release the padlock hasp and open the hand crank cover Install the hand crank onto the top of the crankshaft Check that the motor cutout contact s are open by at least 1 6 mm Check that the motor cutout latch G is actuated Remove the hand crank If the condition in Step 2 and or 3 is not met adjust the motor cutout linkage as follows SM 5481 Rev 1 July 2009 N E 7 AnsaldoSTS Shop Maintenance m ese ee GEAR BOX CIRCUIT CONTROLLER COMPARTMENT O 2j M QU eo Io E d j 1 2 MU P N A ld ill 252 A H 4i F D GEAR BOX CRANK COVER G WHEN USED NORMAL RELEASE LEVER COVER PUSH ROD eee Push Rod 8 Yoke J Contact insulation D Mw w Figure 5 3 Adjustment of Motor Cutout Contacts SM 5481 Rev 1 July 2009 5 5 EY Shop Maintena
82. roller compartment identified as in Figure 4 1 and Figure 4 2 These bolts should only be installed if machines are located where blowing sand or dirt could enter the machine and cause a failure Periodically especially before freezing temperatures occur remove these bolts to drain water that may have accumulated in the compartment See note and caution statements in Section 4 1 3 above 4 1 4 Lubrication NOTE Regular and systematic lubrication is recommended The period between lubrication depends upon the frequency of operation and environmental conditions and therefore must be established by the railroad Before leaving the factory all working parts of the machine except the worm gear compartment are well lubricated Non painted and non plated parts are coated with a special lubricant to protect against corrosion until installation This lubricant need not be removed since it will mix readily when new lubricants are added For best results only lubricants complying with strict specifications are recommended The recommended lubricants can be ordered from US amp S Detailed lubrication information is provided by the list through E below For lubrication application locations see Figure 4 1 for the M 3 machine and Figure 4 2 for the M 23A and M 23B machines Table 4 2 summarizes the detailed information provided in the list below A Pressure gun grease 7650 01 See points of application
83. rs the voltage at the motor terminals should be not less than 20 volts under the most adverse conditions of load temperature and battery voltage Dc high voltage motors should have not less than 85 volts and ac motors should have not less than 100 V at the motor terminals With the exception of the split field motor the minimum voltage is the sum of the voltages across field terminals A and D on the motor terminal board and armature terminals X and Y measured at the same time and with the clutch slipping Information on the adjustment to slip the clutch is given in Section 4 2 1 2 For the split field motor this minimum voltage is the sum of the voltages across the energized field terminals A and V or D and W on the motor terminal board and armature terminals X and Y measured at the same time with the clutch slipping SWITCH MACHINE WITH 228 SWITCH MACHINE WITH 360 GEA TIO GEAR RATIO AND OC e Sede PARALLEL Lv ALES PARALLEL FIELO FIELO MOTOR D SWITCH MACHINE FURNISHED INITE MACHINE Mig es PRIOR TO SOME OATE IN 1953 SERIES PARALLEL WITH 89 TO GEAR RATIO ANO FIELO MOTOR D C MV ALL SERIES FIELD MOTOR SERIES CONNECTED STATOR COILS COMPENSATING WINDING ON STATOR MACHINE WITH 169 SWITCH MACHINE WITM 199 GEAR RATIO AND D C GEAR RATIO AND FIELO MOTOR MA MOTOR Figure 2 17 Typical Motor Connections 2 9 Overload Pro
84. shaft is grooved and the housing has ribs to drive alternate friction disks which are compressed by action of the heavy coil spring This spring force is contained between the adjusting nut and Oilite thrust plate which is supported on the tapered shoulder on the worm shaft The clutch gear hub has a three finger engagement with the clutch housing tubular neck so that the clutch housing 1 driven by the motor Drive between the clutch housing and the worm shaft is through the friction disks 2 6 Operation By Hand Crank M 3 Only Provision is made in the M 3 switch machine for hand operation by inserting a removable hand crank through the hole in the gear box cover see Figure 2 1 Motor cutout contacts O in Figure 2 8 are operated by means of a linkage to open the motor circuit and in some cases to open a control circuit when the hasp for the hand crank cover is released Latch X which can be removed if not desired serves to hold the motor cutout contacts latched out until reset manually a useful feature when others than the signal maintainer are authorized to use the hand crank WARNING Remove the hand crank after use Do not permit traffic through the switch when the hand crank is installed An installed hand crank could contact a vehicle power shoe causing equipment damage and creating a hazardous condition 2 16 SM 5481 Rev 1 July 2009 5 i AnsaldoSTS Introduction and Equipment Overview 2 7 Dua
85. socket wrench 6 in adjustable wrench 10 in adjustable wrench Set of hex sockets Ratchet wrench Extension bar Special tool N173641 for installing gland nut Thin head flat wrench 1 to 2 in opening Allen wrench 3 8 in Clutch assembly gage 7 77 AnsaldoSTS SM 5481 Rev 1 July 2009 m E 7 AnsaldoSTS Supplemental Maintenance Information 6 SUPPLEMENTAL MAINTENANCE INFORMATION Information is provided in this section for e Changes that may be necessary at time of installation if the switch machine as ordered does not suit particular conditions at the installation site Instructions are provided for the following modifications e Inverting lock box to correspond with lock rod notching e Shifting indication cams to have contacts at left indicating normal position e Changing dual control mechanism from a right hand to a left hand assembly or vice versa e Changing dual control interlock between selector and hand throw lever or changing MOTOR position of selector lever e Dismantling for overhaul or to replace certain parts e Converting from high voltage to low voltage or vice versa WARNING Before starting any of the procedures provided in this section disable power to the switch machine Failure to do so could result in serious personal injury or loss of life 6 1 Inverting Lock Box As described in Section 2 3 lock box dogs must enter narrow notches of the lock rod before reaching
86. ssing trains 2 Check that tie plates tie straps rail braces and switch fittings are secure 3 Check that there is proper drainage and no sign of water accumulation around the switch machine 4 Remove any material that could obstruct switch movement Switch Machine Inspection 1 Remove covers from switch machine circuit controller gear box and motor compartments 2 Using hand crank for M 3 or hand throw lever for M 23 operate switch back and forth as often as necessary and check for e Proper and smooth operation of switch points without undue drag or spring Check that points ride on all slide plates Check for switch point obstructions e Loose or damaged electrical connections SM 5481 Rev 1 July 2009 4 1 x Field Maintenance 4 AnsaldoSTS e Burned frayed or broken insulation e Proper movement of switch machine main crank slide bar lock box switch operating bar circuit controller shaft and circuit controller point detector connecting rods e Excessive wear lost motion or accumulation of foreign or conductive material e Excessive or unusual vibration and noise 3 Electrically operate switch machine and check for e Smooth movement of switch machine motor and gears no binding etc should be noticed e Conditions listed in step 2 above 4 Check that there are no signs of moisture accumulation within switch machine compartments 5 Check for moisture in the compartments If drain plugs are instal
87. t at the commutator end For detailed information on the motor see Section 2 8 The reduction gears are assembled on shafts supported in Oilite bearings The shafts are held in place endwise by the shaft end plate which 1 slotted to fit over a neck in each shaft To remove SM 5481 Rev 1 July 2009 2 15 5 Introduction and Equipment Overview AnsaldoSTS these shafts to change out the reduction gears it is necessary to first shift the motor out of the way The clutch gear which is the final spur gear has an Oilite bushing to support it on the worm shaft This gear is connected to the worm shaft through the friction clutch The worm shaft meshes with the worm gear on the main crankshaft and 1 supported at the end adjacent the controller by a double row ball bearing which takes both radial load and end thrust It also is supported by a single row ball bearing in the wall between the worm gear compartment and the spur gear compartment Both ball bearings are lubricated by the worm gear lubricant A cap on the outside seals the outer side of the double row ball bearing An oil seal pressed into the opening is provided on the spur gear side of the single row ball bearing The friction clutch housing has a tubular neck supported in an Oilite bushing pressed into the gear box bore The inside diameter provides slight clearance for the worm shaft The housing has a felt packing to prevent seepage of oil into the friction clutch The worm
88. t detector rollers for the normal position of the switch machine are shown in Figure 2 10 Mid stroke positions of the various parts are shown in Figure 2 11 Reverse positions of the various parts are shown in Figure 2 12 Figure 2 13 shows the various parts latched up in the reverse position The right and left hand operating crank springs hold the yoke which is pivoted on the controller shaft up against the yoke stop on the latch bracket for all controller positions except when the point detector bar has been displaced due to improperly positioned switch points That is for normal operation of the machine with the switch points in proper adjustment the yoke assembly remains in a fixed position as can be seen in Figure 2 10 Figure 2 11 and Figure 2 12 With the switch machine in the normal position as shown in Figure 2 10 point detector rollers A and B stand clear of the point detector bar thus preventing wear of point detector parts under traffic conditions Roller A however is in position to detect the yoke downward should the 2 12 SM 5481 Rev 1 July 2009 N nd 7 AnsaldoSTS Introduction and Equipment Overview point detector bar be displaced When the machine is operated out of the normal position the controller shaft rotates in a counterclockwise direction viewed from right hand side and the operating levers are shifted by the eccentric bushings so as to move point detector roller A away from the point detector bar and
89. tection The standard plug in type relay for the overload protection of dc switch machines is the US amp S PN 150SO relay For the protection of ac switch machines US amp S PA 150SO plug in type relay is used 2 22 SM 5481 Rev 1 July 2009 AV i 7 AnsaldoSTS Introduction and Equipment Overview These relays are used in conjunction with the PN 150BM switch control relay and the PP 151 magnetic stick relay for overload and short circuit protection Formerly used and still available for replacement purposes are the plug in type ORP 60 overload relay for dc machines and the plug in type ORP 66 for ac machines Where shelf mounting relays are used overload protection can be provided for the dc machine by using an OR 11 overload relay and dc overload protection can be provided by an OR 20 overload relay In ordering a switch overload relay the current at which the clutch is set to slip or the gear ratio of the machine and the type of the machine with which it is to be used should be specified The gear ratio is stamped on the switch machine nameplate The thermal resistors of these relays are selected to give proper operation for the value of current at which the clutch slips with overload The OR 20 should be ordered for the voltage and frequency of the machine and the order must specify whether the control is by relay or type controller 2 10 Heaters Heaters are available for all switch machines The heater for the circuit con
90. teeth are in full engagement with the teeth on top of the worm gear so the motor drives the crank the top rollers on the operating yoke should be just clear of the upper spring cup This relation can be varied by adjusting eccentric bushings Gl see Figure 6 1 Referring to Figure 2 14 and Figure 6 1 note that the selector clutch yoke has one end supported on and driven by the finger on the selector lever shaft The other end pivots on eccentric bushings GI see Figure 6 1 These bushings are held fixed by through bolt G When this bolt is loosened the eccentric bushings may be rotated to raise or lower the center line for the pivot holes in the yoke arms thus affecting the elevation of the yoke rollers The eccentric bushings have hexagonal heads for application of an adjusting wrench On each eccentric bushing one flat is stenciled which will be on top when the eccentric is in its mean position The adjacent flat on one side of the N is stenciled When the eccentric bushings turned to bring the mark up this will lift the yoke and its rollers The flat on the other side of the N is stenciled The two eccentric bushings should be at a similar angle of rotation to avoid twisting the yoke Then tighten the pivot bolt to hold the adjustment Also check that top rollers are free from pushing on the upper spring cup while the selector clutch is fully down In addition check that the rollers are not t
91. tem 111 gaske 146698 Operatingbarcover Opemaingbarcwer 8 Crank case cover 48290 Motor cover includes item 172 gaske N2829 700934 475077 050034 0500 86 050092 050092 050092 M286594 M186209 M181001 M181032 N269671 N242122 M165752 M165751 J068431 Point Detector Bar Cover N296126 Point Detector Bar Cover N296125 ock nut M223351 ushing M296122 ock washer 047821 Lubricating fitting 1 8 in pipe thread straight Washer Screw machine round hd no 12 28 x 1 1 8 in tin pl use item 64a N218713 nut 035216 074741 074742 071158 074805 067454 4048618 N152633 Gorlock gasket for 71 gear box cover 047286 Neoprene gasket for Item 71 gear box cover 4047286 001 Motor cutout trigger N146670 7 2 SM 5481 Rev 1 July 2009 77 AnsaldoSTS Parts List Description PatNo 4855 048007 Wire harness for low voltage machines not shown adjustment on field side similar to AREMA drawing 1587 over plate 165904 Ventilator 070109 074735 074736 rod support 074738 Hinge lug N285692 Adjustable hasp N272961 Eccentric stud M285680 tud M147534 Hasp N301050 M209199 Rivet J049475 Stud for item 16 076018 Roller for item 16 076019 Roller for item 16 076020 inding post only M115706 ut 480301 Washer 047818 ut 074790 SM 5481 Rev 1 July 2009 7 3 A Parts List 77 AnsaldoSTS tem
92. the top tooth is shown in alignment with the tooth space in the hub of the hand throw pinion because the switch and the hand throw lever are both in normal position There may be times when the switch is blocked in mid stroke by an obstruction so that the main crank will not be in normal position and if the last motor operation left the switch in the reverse position the teeth likewise are not aligned NOTE When the hand throw selector is moved to HAND position the switch operating mechanism may initially remain engaged with the motor rather than with the hand throw lever Operation using the hand throw lever assures that the machine shifts to hand operation mode 2 7 2 Operation by Selector Lever The selector clutch assembly is shifted up or down by a 180 rotation of the selector lever The inner crank finger of the selector lever swings the selector clutch yoke up or down This yoke has rollers on each side which engage the upper and lower spring cups of the selector clutch assembly The selector clutch assembly see Figure 2 14 has a spool shaped core made in two parts which are screwed together and are held from becoming unscrewed in service by the splines in both portions The upper part or clutch for hand operation has a single tooth on top for engaging SM 5481 Rev 1 July 2009 2 17 5 Introduction and Equipment Overview AnsaldoSTS the hand throw pinion which requires strict agreement of the
93. the wide notch In some cases it may be necessary to invert the lock box to obtain this condition When lock box inversion is necessary follow the procedure listed below 1 Place the machine in the end stroke position that brings lock box G nearest to the motor Note which one of the indication cams N or P has its notch up See Figure 2 8 2 Remove bolts T that hold the circuit controller to the case Swing the controller up pivoting it about the edge of the case adjacent to the wire conduit 3 Turn lock box G upside down Make sure that it is placed properly on the driving studs of the slide bar 4 Replace circuit controller Check that pinion gear F see Figure 2 9 meshes with the rack teeth on the lock box in such a manner to place the indication cam notch up and centered about roller D same as when circuit controller was removed SM 5481 Rev 1 July 2009 6 1 7 Supplemental Maintenance Information AnsaldoSTS 5 Attach the circuit controller with bolts T 6 2 Shifting Indication Cams To permit standardized wiring and always have the indication contacts on the left side of the circuit controller indicate normal regardless of which end of the slide bar and lock box stroke is designated normal the indication cams N and P in Figure 2 8 are arranged so that either cam can have its notch up when the slide bar is at either end of its stroke As previously described Section 2 4 each cam is driven by a
94. ther This can best be done by inverting and placing the hand portion on the crank splines and turning the motor portion with a screw driver or with a bar in the motor clutch teeth Splines in both parts must be aligned to permit reassembly For proper alignment of the dual control gearing upon reassembly see Section 6 4 6 6 3 Worm Shaft Removal To remove the worm shaft it is necessary to take the gear box off the base casting otherwise the end of the shaft would strike the wall of the circuit controller compartment 6 6 4 Slide Bar Removal The slide bar can be removed through the motor compartment after first removing the lock box and the motor 6 7 Conversion From High Voltage To Low Voltage or Vice Versa Conversion from high voltage to low voltage operation or vice versa involves changing the motor gear ratio and wiring The desired gear ratio may be obtained by changing the reduction gearing according to the description provided Section 2 5 The high voltage motor may be replaced by the low voltage motor or vice versa The connections at the motor terminal board and the main terminal board must be as shown in Figure 2 19 for the low voltage motor or with Figure 2 22 or Figure 2 25 for the high voltage motor see Section 2 8 Complete wire harnesses may be ordered to facilitate conversion Two wire harnesses are available one for any low voltage machine and another for any high voltage machine 6 10 SM 5481
95. tor control contacts located in the circuit controller are factory set to provide approximately 1 4 in opening between the segment ring and the V end of contact finger Fl see Sect Y Y and Z Z in Figure 5 1 and provide approximately 1 8 in margin against opening under F3 see Sect W W and X X in Figure 5 1 when the machine is at full stroke operated as far as it will go by rotating the friction clutch while in MOTOR position Ordinarily no readjustment will be required as long as the assembly is not disturbed If necessary small adjustment of the opening can be made by loosening the bolt that holds the end of finger Fl and sliding the finger in or out then re tightening the bolt Contact finger Fl should be adjusted to push against the segment with 2 0 to 2 5 Ib force while finger F2 is held clear Adjust finger stop Fla to have 1 32 1 64 in minimum clearance from finger Fl when F1 is riding on the segment Adjust finger F2 to push on finger Fl with 1 75 to 2 0 Ib force when finger Fl 15 the segment Adjust stop F2a to clear finger F2 by 1 32 1 64 in minimum when contacts are closed as shown in Sect W W and X X and to permit finger Fl to clear finger F2 by 1 16 in minimum when contacts are open as shown in Sect Y Y and Z Z Adjust finger F3 to push on the segment with 1 75 to 2 0 Ib force SM 5481 Rev 1 July 2009 5 1 Shop Maintenance 7 AnsaldoSTS 1 3 4 2lb 1 32 1
96. trol of DC High Voltage Switch Machine With Split Field Motor Figure 2 25 Using DP 25 or PNP 69 and OR 11 or ORP 60 Relays eiit Ped ee Minded Picea ce iit edibles 2 30 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 4 1 Figure 4 2 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 6 1 Figure 6 2 Figure 6 3 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 7 5 Figure 7 6 vi x Table of Contents 74 AnsaldoSTS Typical Installation of Switch 3 1 Typical Installation of M 23A Switch 3 2 Typical M 3 Switch Machine Mounting Plan Right Hand Assembly with Adjacent Point Closed tone Dre m oet tto tet rinde e E TIRE ER 3 2 Typical M 23A or M 23B Switch Machine Mounting Plan Right Hand Assembly with Adjacent Point Closed eee 3 3 Lubrication Locations for Switch Machine 4 6 Lubrication Locations for M 23A and M 23B Switch Machines 4 6 Circuit Controller Adjustment Sectional Views of Figure 5 2 5 2 Circuit Controller Shaft Assembly sss emm nennen 5 3 Adjustment of Motor Cutout Contacts 5 5 Friction Clutch Assembly and Special Tool for Installing Gland Nut 5 9 Sectional Views of M 23A Gear Box
97. troller compartment mounts at the end of the controller opposite the wire inlet see Figure 2 18 It is held by the four screws that hold the circuit controller terminal boards at that end of the compartment No additional holes are required and terminal space is usually available on the main terminal board See Figure 2 19 Figure 2 22 and Figure 2 25 for wiring A heater is also available for the motor compartment It is mounted on the underside of the bracket for the motor terminal board see Figure 2 18 Two holes must be drilled and tapped in the bracket Wire leads are terminated on the same binding posts on the main terminal board for the circuit controller heater Usually 15 W heaters energized by 110 VAC are used SM 5481 Rev 1 July 2009 2 23 i Introduction and Equipment Overview AnsaldoSTS HEATER HEATER HEATER FOR MOTOR COMPARTMENT Figure 2 18 Heaters for Circuit Controller and Motor Compartments 2 11 Wiring Internal wiring for standard dc low and high voltage switch machines is shown in Figure 2 19 Figure 2 22 and Figure 2 25 Internal wiring for ac switch machines is also shown in Figure 2 22 The circuit controller indication cams are shown for a switch having the right hand point normally closed and in normal position There is no difference due to the side of the track on which the machine is placed Figure 2 21 and Figure 2 24 show typical circuits
98. ulating washers the four motor control segment insulating bushings the two 2 8 SM 5481 Rev 1 July 2009 AV i AnsaldoSTS Introduction and Equipment Overview eccentric bushings and the gear each have square holes to force them to rotate with the shaft To assure proper relative assembly of the gear and eccentric bushings the shaft is made with unlike ends so that it can go into the controller in only one way and has one corner flattened for a distance of 2 in at one end and 3 in at the other end while the gear and the eccentric bushings have dowel pins which can be assembled only in these flats With the exception of the indication cams and their coil springs the two arms of the yoke and the operating levers all the parts are pulled up solidly end to end by the nuts on the ends of the shaft The indication cams and their respective springs ride on the gear hub and are held against the gear face by action of the springs and locked in place with set screws As will be explained later Section 6 2 the cams may have either of two operating positions as determined by slots in the cam hub engaging the stud in the gear face The yoke is free to rotate around the concentric hub portions of the eccentric bushings and the operating levers are free to rotate around the eccentric portions or be held stationary while the shaft and eccentric bushings rotate as the case may be See Section 6 3 for specific instructions on how to install a ne
99. ure 2 9 Figure 2 10 Figure 2 11 Figure 2 12 Figure 2 13 Figure 2 14 Figure 2 15 Figure 2 16 Figure 2 17 Figure 2 18 Figure 2 19 Figure 2 20 Figure 2 21 Figure 2 22 Figure 2 23 Figure 2 24 Figure 2 25 Figure 2 26 SM 5481 Rev 1 July 2009 Table of Contents List of Figures Switch Machitie Ig o egeret tapa de er eae RR Dee 2 2 M 23A Switch Maclilne 22 exile ibat aee aeui 2 3 Switch Operating Mechanism 222200 000 2 5 Driving Parts in Extreme 2 6 Driving Parts in Mid Position 2 6 Driving Parts in Extreme Position Opposite to Position Shown in Figure 2 4 2 7 Adjustable Lock Rods circi niece ec ie end re davis 2 8 Circuit Controllers epe ate RU 2 10 Circuit Controller Additional Sectional View 2 10 Point Detector Parts in Normal 5 2 13 Point Detector Parts in Mid Stroke 2 14 Point Detector Parts in Reverse Position 2 14 Point Detector Parts in Reverse Position and 42 2 4 2 2 15 Dual Control neret nennen nennen 2 19 Motor Cutout Contact Assembly M 23A and 23 2 20 Bottom V
100. w or rebuilt circuit controller into a switch movement 2 4 1 Motor Control Contacts Of the four sets of motor control contacts see Figure 2 8 the two on the right side viewed from lock rod end of machine are open and the two on the left side are closed when the machine is in the position shown When the machine reaches full opposite position the closed contacts have been opened to break the motor circuit and the machine back to its original position SM 5481 Rev 1 July 2009 2 9 A x Introduction and Equipment Overview AnsaldoSTS LEFT SIDE L 2 ee er CTG 2 I ii a A 7 2 00 0 EZ 7M eap aH Oe rd d L in J Y 24 ee CLL oar MN e UE 5227 S47 SA SUAE PP AA ESSI Figure 2 9 Circuit Controller Additional Sectional View Each set of motor control contacts provides two parallel circuit paths one through direct contact of opposing spring fingers Fl and F2 see Figure 5 1 and Figure 5 2 and the other through finger 2 10 SM 5481 Rev 1 July 2009 AV i AnsaldoSTS Introduction and Equipment Overview the conducting segment and finger The circuit through the conducting segment opens last as the notch passes under end of finger Fl Finger F2 is stopped first before the V end clears the segment entirely This arrangement prote
101. x USED 5 TERMINAL BOARD Y A FIELO NARMATURE TERMINALS NOTE NUMBER N CIRCLE REPRESENTS NUMBER OF TERMINAL NUMBER NOT IN CIRCLE SHOWS NUMBER OF TERMINAL TO WHICH OTHER END OF WIRE 1 CONNECTED CIRCUIT CONTROLLER CONTROLER 28 27 26 29 WHEN USED 12 254 ee x 38 37 i ij 9 CORB s BOARD 3 A CONTACTS 69 6 CONTR Y SELECTOR LEVER 2 e SHUNTING Q 2 lt 7 Y 6 6 4 9 9 E 20 18 2 16 62 36 4 30 C 31 amp 9 9 G 27 26 15 14 6 34 5 12 25 9 EC i 61 33 2 ROTATION Figure 2 19 Wiring Diagram for DC Low Voltage Switch Machine With Series Parallel or All Parallel Motor 2 26 SM 5481 Rev 1 July 2009 AV i AnsaldoSTS Introduction and Equipment Overview TO CONTROL CIRCUIT swe WR SWITCH MACHINE MAIN TERMINAL BOARD NOTE EXTERNAL CONNECTIONS SWITCH HAVING THE RIGHT HANO POINT NORMALLY CLOSED FOR A SWITCH HAVING THE LEFT HAND POINT NORMALLY CLOSED INTERCHANGE THE EXTERNAL LEADS TO TERMINAL 59 TERMINALS AND ON THE MAIN TERMINAL BOARD 00 Figure 2 20 Typical Circuit for Control of Low Voltage Switch Machine With Series Parallel or All Parallel Field Motor Figure 2 19 Using DP 25 or PNP 69 and OR 11 or ORP 60 Relays TO N WR oe NOTE ONTROLS wR EXTERNAL CONNECTION
102. y side see Figure 2 7 Each has a narrow notch only slightly wider than the locking dogs This narrow notch in one rod is on top and in the other rod on the bottom To allow for variations in switch throw the two rods are adjustable longitudinally with respect to each other and each has a wide notch located alongside the narrow notch of the other As the notch is on top of the lock rods for one position of the switch and on the bottom for the other position and as the lock box likewise has one dog on top and the other on the bottom it follows that the slide bar with its lock box can complete its stroke only if the lock rods are shifted by the switch points to the position corresponding to proper point closure When the stroke is completed the switch is secured by the locking The stroke of the slide bar and its lock box is such that the locking dogs provide adequate interlock with only the lock rod which the dog enters first Therefore the lock box and the lock rods must be assembled so the dogs will enter the narrow notches first The procedure for inverting the lock box when necessary is provided in Section 6 1 SM 5481 Rev 1 July 2009 2 7 mA i Introduction and Equipment Overview 7 AnsaldoSTS em p oie WC TYPE GENERALLY USED WITH BALL AND SOCKET CONNECTION E 7

M-3, M-23A, M23B ELECTRIC SWITCH MACHINE WITH FIELD

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