SM-9277 - Ansaldo STS
Contents
1. y 4 te gt y x p K S i io k 22 28 DIA HOLE is amp Figure 3 1 Overall Dimensions of the Slid State Code Following Relay 3 2 SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Operation Testing 4 Operation Testing 4 1 Operation The shelf mounted relay operates as a 4FB relay and must be wired as described in Section 3 1 The applied coded energy closes the front contact switches and opens the back contact switches 4 2 Test Procedure No periodic testing or adjustment is necessary There are no calibration or adjustments required on the solid state relay Testing a solid state relay differs slightly from testing an electromechanical relay A minimum operating voltage replaces the pick up calibration Testing consists of energizing the relay with 8 volts DC and observing that the contacts close An AC source is used to indicate contact closure To test the shelf mounted relay connect it to a test fixture wired as shown in Figure 4 2 1 Turn on the AC power by closing switch SW1 No lamp should be illuminated Any lit lamp indicates a shorted switch 6600 KOK 3F 3H 3B 6 9 eee 72 9 Figure 4 1 Pin Out Information for the Solid State Shelf Mounted Relay Viewed from the Top of the Relay SM 9277 Original August 2005 4 1 2 Close switch SW2 Lamps L5 L6 L7 and LS should be illuminated Any lamp not illuminated indicates an open switch This assumes that the indicato2. Figure 1 3 Circuit A of Figure 1 3 uses a single transfer contact and diodes to achieve a voltage negative with respect to N12 Circuit B accomplishes the same function with marginally better efficiency using two transfer contacts In either case AP which must be a biased neutral relay will energize when A is following the code It is a vital mechanism that ensures AP will deenergize when A is not following the code It overcomes the problem inherent with ECFRs that shorting of front and back contacts together is a possibility The circuit elements to duplicate these circuits are packaged on a PC board that is compatible with relay rack mounting 1 2 SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Introduction Table 1 2 Differences in Application of EMCFR and ECFR Relays Recommendation or Parameter EMCFR ECFR Comment Calibration Pick Up and Drop Away are Pick up and Drop Away are Do NOT use an ECFR in an determined by the force primarily determined by photo application in which generated by a magnetic voltaic devices for which there is calibration is critical to structure and the restraining no implied guarantee that it will safety Note in most forces of contact springs never change These devices applications this is not a and or magnets It is implied have proven highly repeatable factor that pick up and drop away are but calibration should not be thus assured regarded as absolute Contact Cont
3. SWITCH amp SIGNAL 1 6 SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Equipment Description 2 Eduipment Description A summary of the specifications for the relay described in this manual are presented in Table 2 1 2 1 Contacts and Current Ratings The relay is for low voltage applications and an AC DC switch is provided The load rating is 2 5 amperes per contact up to 30 volts DC and 22 Vrms Low voltage contacts are protected up to 34 volts and are short circuit protected Breakdown voltage across a normal reverse contact set is limited by the surge protection ratings of 34 VDC for low voltage contacts 2 2 Isolation for Biased Solid state Relays The steady power source and code input are isolated Contacts and inputs are isolated from each other and the frame the withstand voltage is 1500 Vrms Breakdown voltage across a front back contact set is limited by the surge protection ratings of 34V 2 3 Voltage Requirements The operating voltage for the relay is 8 to 16 volts DC Ripple must be limited so that the instantaneous voltage does not drop below 8 volts Table 2 1 Specifications for the Solid State Code Following Relay Parameter Value Operating Voltage 8 to 16 VDC can not drop below 8 VDC Up to 230 volts Contacts are NOT short Contact Protection circuit protected External fusing is required for short circuit protection Operating Temperature Range 40 C to 70 C Height 9 25 Overall Dime
4. UNION SWITCH amp SIGNAL Union Switch amp Signal Inc an Ansaldo Signal company 1000 Technology Drive Pittsburgh PA 15219 e 645 Russell Street Batesburg SC 29006 SM 9277 Shelf Mounted Solid State Biased Code Following Relay US amp S Part No Installation Operation Copyright 2005 SM 9277 August 2005 Union Switch amp Signal Inc Original UNION SWITCH amp SIGNAL Proprietary Notice This document and its contents are the property of Union Switch amp Signal Inc hereinafter US amp S This document has been furnished to you on the following conditions no right or license under any patents or any other proprietary right in respect of this document or its content is given or waived in supplying this document This document or its content are not to be used or treated in any manner inconsistent with the rights of US amp S or to its detriment and are not to be copied reproduced disclosed to others or disposed of except with the prior written consent of US amp S Important Notice US amp S 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 Within the scope of the attached manual it is impossible to take into account every ev
5. acts are driven by a Contacts are independent A Do NOT use an ECFR in an Dependence common element and shorted contact analogous to application where dependent therefore a welded contact will one that is welded will not inhibit contact operation is critical to prevent opposite state the others from functioning safety An example of contacts from conducting normally overcoming this problem is presented in Section 1 1 1 Inductive Load Preferred practice in switching Transient protection is an integral External snubbing and arc Switching inductive load relays is to snub part of the solid state switches suppression devices are the load to prevent arching unnecessary Line to line EMI and contact corrosion and line to ground arrestors are recommended for circuits that exit the house or case Short Circuit A short circuit can damage the With the low voltage contacts a There should be less Protection relay and possibly initiate a fire short circuit will cause no damage concern about short circuits in the wiring to the wiring or the ECFR with the ECFR Code Following Contacts open and close Code ON time is more consistent For those applications Integrity and substantially matching the ON There is no wear out mechanism wherein the code follower is Reliability time of the code but erode with and therefore no degradation of repeating ON OFF switching time this causes code ON performance regardless of code from a code generato
6. chanical CD style cookie jar relay The shelf mounted solid state relay is a code following relay comprised of two circuit boards each containing four solid state switches The two boards are housed in a W400 style enclosure On each of the boards two of the switches are used as front contacts and two are used as back contacts All of the switches are normally open devices therefore to emulate a back contact function it is necessary to apply steady energy to one set of terminals on the upper terminal block to enable the back contact switches Applying energy to another set of terminals activates the front contact switches and opens the back contact switches In the event that back contacts are not required it is not necessary to enable them because the front contact switches will operate independently The two circuit boards operate together to form a 4FB relay The circuit boards are designed for low voltage applications The low voltage unit can support load currents from 2 5 amperes up to 30 VDC 22 volts Vrms AC Breakdown voltage across a normal reverse contact set is limited by the surge protection ratings of 34 VDC for low voltage contacts L ALAK 12 STEADY 12 4F 4H 4B 41 ket F H B MEA Co CODED UE Mm B Figure 1 1 Typical Shelf Mounted Solid State Code Following Relay SM 9277 Original August 2005 1 1 UNION SWITCH amp SIGNAL Introduction Table 1 1 Cross References for Solid State Ele
7. ctromechanical Shelf Mounted Relays CDP Style Voltage Contacts Solid state Contact Rela g Replacement Application N223414 4FB LV N40700403 Shin ail The main difference between the solid state relay and the electromechanical relay is that a steady energy source must be connected to the solid state relay to activate the back contacts 1 1 Application Considerations Other than the obvious difference that a steady energy supply must be used to duplicate operation of an electronic code following relay ECFR to its electromechanical code following relay EMCFR counterpart there are differences that need to be considered that relate to safety The differences between the ECFR and EMCFR are presented in Table 1 2 1 1 1 Overcoming Contact Dependence In some safety critical applications a vital relay is steady energized proving that the EMCFR is following code The general way in which this is accomplished is illustrated in its simplest form in Figure 1 2 A snub on AFP and ABP delays drop out for sufficient time so that AFP and ABP remain steady energized as long as A is following code When coding stops either AFP or ABP drops as does AP This technique is valid with EMCFR s because front and back contacts cannot simultaneously be closed This technique is not valid for the ECFR because the contacts are independently driven and can be simultaneously closed The same function can be accomplished with an ECFR in one of two ways as shown in
8. entuality that may arise with technical equipment in service Please consult your local US amp S Account Executive in the event of any irregularities with our product We expressly disclaim 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 US amp S spare parts be used as replacements SM 9277 Original August 2005 Revision History UNION SWITCH amp SIGNAL Revision History August 2005 Initial Release of Manual ii SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Table of Contents Table of Contents 1 MOD AS A AAA A OE A AA AT M MAT 1 1 1 1 Application Considerations mmereenenenenannnnennvannennnannnaean vann z ze t z t ee ASEE EEEE EE 1 2 1 1 1 Overcoming Contact Dependence sss esse ss sss ee sese resse ee esser reer nenen nern 1 2 1 2 E e TTT 1 3 2 Equipment Description common e nnaman nnaman nnana 2 1 2 1 Contacts and Current Ratings TT 2 1 2 2 Isolation for Biased Solid state Relays sss sese esse ereenn rnn nner ner 2 1 2 3 Voltage R quirements TTT 2 1 3 n coi e dad kavanda aga UE deeocesrsucccvadeceedecceed 3 1 3 1 EEA A A E E de dd ote E 3 1 4 Operation Testing isis E A P E E E E E A E E E 4 1 4 1 Operation sassen lt A dono tadas 4 1 4 2 TESLPIOEEAUFGS a e a o 0 SADE A 4 1 5 Al AAA maat 5 1 List of Figures Figu
9. nsions Width 4 56 Length 96 0 SM 9277 Original August 2005 2 1 Eduipment Description 2 2 UNION SWITCH amp SIGNAL SM 9777 Original August 2005 UNION SWITCH amp SIGNAL Installation 3 Installation The solid state shelf mounted relays may be installed either on a horizontal shelf or mounted to a panel and installed in an equipment rack The shelf mounted relays do no utilize index plates The dimensions for installing the relay are presented in Figure 3 1 These relays operate as a 4FB relay the terminal pinouts are shown in Figure 4 1 3 1 Relay Wiring For the shelf mounted solid state relay the coded and steady energy as well as the contact connection points are connected to AAR terminals on the top of the unit Positive coded energy is wired to terminal Coded negative coded energy is wired to terminal Coded Positive steady energy is wired to terminal 12 Steady negative steady energy is wired to terminal 12 Steady See Figure 4 1 SM 9277 Original August 2005 3 1 UNION SWITCH amp SIGNAL Installation 4 4 56 K A oot L 2 O 0 0 0 O O 0 0 0 0 O O O O 0 Y IL al 1 gt 53 3 5 53 e 63 pe 2 25 63 A A 14 R E AT Ah A Y E A A S y t 1 Fe 25 R i gt A A A rd lt A ite R oy
10. port 5 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 at 1 800 652 7276 or by e mail at railteam switch com SM 9277 Original August 2005 5 1 Technical Support UNION SWITCH amp SIGNAL 5 2 SM 9777 Original August 2005
11. r the time distortion and eventually rate and contact loading ECFR is a superior device contact failure The rate of In cab signal applications the contact failure is accelerated at int of circuit interruption occurs higher code rates and contact at the zero crossing resulting in loading In cab signal less harmonic noise generation applications the point on the than would otherwise occur waveform of circuit interruption is random Low resistance coil relays generally used as track relays are examples where calibration is critical to safety Relays discussed in the manual are not suitable for that or similar applications 1 2 Glossary Coded Energy The signal that activates alternate closure of the front and back contacts Steady Energy The voltage applied to the relay so that the contacts alternately switch when coded energy is applied SM 9277 Original August 2005 1 3 Introduction UNION SWITCH 8 SIGNAL a AFP ABP Figure 1 2 Steady Energized Relay EMCFR SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Introduction CIRCUIT A ECFR B12 Y AP A S A Lt LL _ t A A N12 CIRCUIT B B12 ECFR LE VW a AA A A N12 Figure 1 3 Independent Contacts with ECFR SM 9777 Original August 2005 1 5 introduction UNION
12. r lamps are intact If a lamp is not lit the bulb can be checked by shorting the front or back contact wire to the heel contact wire With this short the bulb should light 3 Close switch SW3 Lamps LS L6 L7 and L8 should extinguish and lamps L1 L2 L3 and L4 should illuminate Any lamp not illuminated indicates an open switch This assumes that the indicator lamps are intact Check the bulb per Step 2 if it is not lit 4 If the test results are satisfactory the relay test is complete Return all switches to their off position 5 Ifthe relay fails the test US amp S recommends returning the relay to their Batesburg SC facility for repair L1 BE OJUSE gs TO 1F L2 JE o S TO 2F L3 E ao NG TO 3F sw1 F1 T1 L4 LADA op TO 4F eTe A 6 L5 TO 120 V OA TO 1B AC LINE O L6 a TO 2B L7 Et a TO 3B L8 LADA us TO 4B VOLTAGE TO 2H REGULATOR TO 3H LM7808 TO 4H TO 12 STEADY SW2 C1 T TO CODED SW3 TO 12 STEADY TO CODED T1 TRANSFORMER 120 V AC TO 12 V AC 2 AMPERES OR BETTER L1 L8 LAMPS 1891 1892 OR 1893 D1 BRIDGE RECTIFIER 100 VOLT 5 AMPERE SW 1 2 3 SPST SWITCH C1 100 MFD 50 VOLT F1 120 VOLT 3 AMPERE FUSE AND HOLDER MISC LAMP SOCKETS WIRE MOUNTING BASE AND RECEPTACLES Figure 4 2 Test Fixture for the Shelf Mounted Solid State Code Following Relay 4 2 SM 9277 Original August 2005 UNION SWITCH amp SIGNAL Technical Sup
13. re 1 1 Typical Shelf Mounted Solid State Code Following Relay sese eee 1 1 Figure 1 2 Steady Energized Relay ENICRR1 asas rda irnata T Tad eroe aar EST ESTEE 1 4 Figure 1 3 Independent Contacts with ECFR ciiise HIGHER ez ezt ak tetek LOGH k seket UAG CH Te Tea k telek arest 1 5 Figure 3 1 Overall Dimensions of the Slid State Code Following Relay sese eee eee 3 2 Figure 4 1 Pin Out Information for the Solid State Shelf Mounted Relay sees 4 1 Figure 4 2 Test Fixture for the Shelf Mounted Solid State Code Following Relay sss eee eee 4 2 List of Tables Table 1 1 Cross References for Solid State Electromechanical Shelf Mounted Relays 1 2 Table 1 2 Differences in Application of EMCFR and ECFR Relays cococococococcccccccccconononccnncnnncnnnnanoncnnnnnnnnanns 1 3 Table 2 1 Specifications for the Solid State Code Following Relay sss 2 1 SM 9277 Original August 2005 iii Table of Contents UNION SWITCH amp SIGNAL iv SM 9777 Original August 2005 UNION SWITCH amp SIGNAL Introduction 1 Introduction This service manual provides installation and operation information for Union Switch amp Signal s shelf mounted solid state biased code following relay Figure 1 1 This relay provides a solid state option for customers with existing electromechanical code following relays Table 1 1 cross references the US amp S shelf mounted solid state relay to the US amp S electrome
Download Pdf Manuals
Related Search