TM140A Tension Meter 20185
Contents
1. 13 iii INDUSTRIAL MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com INTRODUCTION Read this manual carefully making full use of its explanations and instructions The Know How of safe continuous trouble free operation depends on the degree of your understanding of the system and your willingness to keep all components in proper operating condition Pay particular attention to all NO TES CAUTIO NS and WARNING S to avoid the risk of personal injury or property damage It is important to understand that these NOTES CAUTIONS and WARNINGS are not exhaustive Nexen cannot possibly know or evaluate all conceivable methods in which service may be performed or the possible hazardous consequences of each method Accordingly anyone who uses a procedure that is not recommended by Nexen must first satisfy themselves that neither their safety or the safety of the product will be jeopardized by the service method selected THEORY OF OPERATION Nexen s TM 140A Tension Meter measures displays and provides proportional output signals based upon tension generated in a continuous strip process The TM140A provides excitation for two LDVT based MB Series tension sensing load cells or one of two Nexen strain gage sensors type S or CFL The load cells measure web tension and provide a proportional low volt2. Q e e on e erre nre ne n rennen n nn eene n nn enne nne n rne nee ne n rn 1 Theory 1 Installation Y 2 Electrical C onnections e Leere e e rre e eoo nn erre e e nn rennen 3 Sensor 4 peration ennt nenne JJ J JJJq JqJCJJJJJJJ JJJ J J 6 Maintenance ee nnn QQ Q Q nn nn Q Q n n n Q Q T n nn nnne nne n n rennen n rn 7 Fuse 7 Checking Terminal Values 8 Troubleshooting 1 1 9 Mounting Dimensions 11 S pecifications 12 Replacement P arts 1 12 Warranties
3. MEX 55 53 63 23 31 MTY 81 83 54 10 18 SY DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com WEB CONTROL PRODUCTS User Manual gt gt gt TENSION Tension Meter Model TM140A FORM NO L 20185 B 0501 GES gt MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com In accordance with Nexen s established policy of constant product improvement the specifications contained in this manual are subject to change without notice Technical data listed in this manual are based on the latest information available at the time of printing and are also subject to change without notice Technical S upport 800 843 7445 651 484 5900 www nexengroup com WARNING Read this manual carefully before installation and operation Follow Nexen s instructions and integrate this unit into your system with care This unit should be installed operated and maintained by qualified personnel O N LY Improper installation can damage your system or cause injury or death Comply with all applicable codes Nexen G roup Inc 560 O ak Grove Parkway Vadnais Heights Minnesota 55127 Copyright 2000 Nexen G roup Inc ISO 9001 Certified ii GES Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com TABLE OF CONTENTS Introduction
4. 442 1 95 72 60 ventasQindustrialmagza com 3 Using the four W ing Screws provided secure the Mounting Brackets to the Mounting S hell See Figure 6 Adjustment 4 Insertthe Adjustment S crew and jam nuts into the center hole of Mounting Brackets S ee Figure 6 5 Adjustthe screws until the panel is firmly clamped between the TM 140A front panel bezel and slides See Figure 6 6 Tighten the jam nuts FIGURE 6 ELECTRICAL CONNECTIONS NOTE Use the cables provided with MB CFL and 5 Tension Sensors to connect the sensors to the TM140A Use 18 AWG wire for all other connections See Figure 7 SENSOR WIRING Single Sensor 1 Connectthe sensor cable for Sensor No 1 See Figure 7 External Terminals 2 Shortacross Terminals 5 and 6 with a jumper wire Two Sensors 1 Connect both sensor cables to the TM 140A 2 Connect both shields to Terminal 9 Control Output eero 4 to 20 mA Contact Zero Tension REVERSE TENSION SENSING Output External Meter MB Tension Sensor Output 1 mA Reverse the connections ofthe green and yellow wires on AC Power Supply each Tension S ensor 1 ForTension Sensor No 1 connect the yellow wire to Terminal 1 and the green wire to Terminal 2 Selecting 2 ForTension Sensor No 2 connect the yellow wire to Wiring Terminal 5 and the green wire to Terminal 6 NOTE For Strain Gauge Tension Sensors reorient 5 Measuring 2 Tension lt
5. the center line of the sensor to the resultant Output ofthe force See the corresponding a maintenance manual for further electrical Control Output 0 to 10V 30 connection information TOTAL Tension lt FIGURE 7 3 FORM NO L 20185 B 0501 INDUSTRIAL MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com REMOTE TENSION INDICATOR WIRING 1 Remove the jumper from Terminals 14 and 15 AC POWER WIRING 1 ApplyAC power tto Terminals 16 and 17 2 Connect Ground to Terminal 25 NOTE The Voltage Select J umper wire connected to Terminal 18 is connected to Terminal 24 240 V from the factory If another voltage is applied at Terminals 16 and 17 remove the jumper from Terminal 24 and connect it to the proper terminal The No 1 No 2 and Total signals at Terminals 26 27 28 and 29 on the back panel are also proportional at 0 10 volts equal to maximum full scale but are not controlled by the Read Out Selector Switch or the Range S witch They constantly put outthe appropriate proportional and buffered signal with 0 10VDC equals 0 to full scale in high range SENSOR CALIBRATION See Figure 8 Tension Indicator 700 20 30 40 Ib FIGURE 8 FORM NO L 20185 B 0501 T 2 Connectthe 1mA remote meter leads to Terminals 14 and 15 AC power can be 100 110 120 200 220 or 240VAC ei
6. 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com MAINTENANCE Nexen s TM 140A does not require routine maintenance Periodically check that the pillow block bearings mounted to the Tension S ensors have not moved It is also advisable to periodically check the Zero and S pan Adjustment S ee OPERATION if close accuracy is required FUSE REPLACEMENT See Figure 11 The TM 140A has two protective fuses one fuse is in the incoming AC line and the other fuse protects the Zero Tension circuit from feed back voltage resulting from AC Line Fuse damage to the device connected to the Zero Tension Zero Tension Terminals Fuse The AC Line Fuse is rated 0 2 Amp Slow Blow and is located on the back panel near the terminal block To replace the AC Line Fuse turn off the AC power Lift the catch below the fuse holder and remove the fuse holder Replace the fuse with the 0 2 Amp Slow Blow spare fuse provided Reinstall the fuse holder making sure it clicks into place when the catch is closed The Zero Tension Fuse is located on the main printed circuit board It is rated at 0 2 Amp Instant Blow To replace the Zero Tension Fuse turn off the AC power FIGURE 11 Remove the two screws from the front panel of the TM 140A and remove the TM 140A from the Mounting Shell Remove the defective fuse from the fuse holder and replace it with the 0 2 Amp Instant Blow fuse provided Slide
7. 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com INSTALLATION NOTE The TM 140A is an electronic component and should be mounted in a dry dust free shock and vibration free area with an ambient temperature of more than 32 F 0 C and less than 122 F 50 C SHELF or WALL MOUNTING 1 Remove two screws located in the TM 140A front panel See Figure 2 2 Remove the TM 140A from the Mounting S hell See Figure 2 3 Install Mounting Brackets a For shelf mounting use the two Mounting Brackets and four W ing Screws provided See Figure 3 NOTE Brackets may also be mounted to the upper screw holes to allow under shelf mounting b For wall mounting secure the two Mounting Brackets with the four W ing Screws provided S ee Figure 4 4 Secure the Mounting Shell to a shelf or wall using the customer provided screws 5 Reinsertthe TM 140A into the Mounting shell and secure it with the two screws removed in Step 1 See Figure 2 PANEL MOUNTING 1 Insertthe TM140A into the cut out in panel See Figure 5 for panel cut out dimensions 2 Insertthe slides into grooves ofthe TM140A Mounting S hell FORM NO L 20185 B 0501 TM140A Remove Screws FIGURE 2 Mounting Bracket FIGURE 3 Mounting Bracket FIGURE 4 7 44 In 189 mm Panel Cut Out FIGURE 5 GES Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO
8. load is applied released Sensor Check to from the sensor roll Does the indication of the meter return to zero when the load is removed Does the indicated reading change as the Readout Selector switch and Range Switch are cycled Are each of the extemal output terminal readings normal The main board is defective No fault A Power Supply Circuit Check Is the Voltage Selector Jumper setto AC power supply Yaya E power supply VONAGE voltage used Is the AC power supply voltage NO Adjust the voltage within the within the tolerance 10 tolerance YES Is the power fuse blown NO The powersupplycircuitboard is defective YES Replace it with the specified fuse 0 2Amp Slow Blow See Fuse Replacement Page 7 9 FORM NO L 20185 B 0501 GES Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 Se DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com B Tension Sensor Check Is a voltage proportional to the yes tension generated at check terminal CP4 NO T is connector for connectthe Tension Indicatorto the ndicator connected to the specified connector terminals specified terminal AX1 is defective External Terminals 14 and 15 are not short circuited or Is a voltage proportional to YES the tension value generated at external indicator 1mA ampme
9. one end ofthe rope Secure the other end of the rope to the machine with the known weight held off the ground 2 Setthe Power Switch to ON Single Sensor Calibration 1 Setthe Read OutSelector to No 1 and adjust the No 1 span Variable Resistor until the Tension Indicator shows the total known weight on the rope 2 Setthe Read Out Selector to No 2 and turn the No 2 span Variable Resistor counterclockwise to ZERO Dual Sensor Calibration 1 Setthe Read O ut Selector S witch to No 1 and adjust the No 1 span Variable Resistor until the Tension Indicator shows one half the known weight on the rope 2 Setthe Read Out Selector S witch to No 2 and adjust the No 2 span Variable Resistor until the Tension Indicator shows one half the known weight on the rope Set the Read O ut Selector S witch to No 2 and adjust the No 2 Zero Variable Resistor until the Tension Indicator displays 0 NOTE W hen using only one sensor make sure a jumper wire is provided between Terminals 5 and 6 Set the Read Out Selector S witch to TOTAL The Tension Indicator must still show 0 Set the Zero Tension Switch to ON Set the Power S witch to OFF FIGURE 9 Setthe Read O ut Selector S witch to TOTAL The Tension Indicator must read the total known weight on the rope Set the Power Switch to OFF Setthe Read O ut Selector S witch to TOTAL The Tension Indicator must read the known weight on the rope Set the Power Swit
10. Face 200 L Range HIGH LOW Switch Meter Face 500 L Power ON OFF Switch Meter Face 1 000 Meter Face 5 Lb Meter Face 2 000 Meter Face 10 Lb b b Zero Tension O N OFF Switch Meter Face 300 Lb b L L b b FORM NO L 20185 B 0501 12 Ga MNaaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com WARRANTIES Warranties Nexen warrants that the Products will be free from any defects in material or workmanship for a period of 12 months from the date of shipment NEXEN MAKES NO OTHER WARRANTY EXPRESS OR IMPLIED AND ALL IMPLIED WARRANTIES INCLUDING W ITHOUT LIMITATIO N IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED This warranty applies only if a the Product has been installed used and maintained in accordance with any applicable Nexen installation or maintenance manual for the P roduct b the alleged defect is not attributable to normal wear and tear c the Product has not been altered misused or used for purposes other than those for which it was intended and d Buyer has given written notice of the alleged defect to Nexen and delivered the allegedly defective Product to Nexen within one year of the date of shipment Exclusive Remedy The exclusive remedy of the Buyer for any breach of the warranties set out above will be at the sole discretion of Nexen a repair or replacement wi
11. MTY 81 83 54 10 18 MEX 55 53 63 23 31 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com INDUSTRIAL MOUNTING DIMENSIONS v1 LSS 0 1 zL e 0 91 629 0 suolsuawiq 1no 1n5 jeued FIGURE 13 FORM NO L 20185 B 0501 11 GSS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com SPECIFICATIONS Rated Tension 5 10 20 50 100 200 300 500 1000 2000 Lbs PowerSupply 100 110 120 200 220 and 240VAC 50 60 Hz Ambient Temperature 32 to 122 F 0 0 50 Weight 3 3 Lbs 1 5 Kg TABLE 2 External Output OUTPUT TERMINAL NO TOTAL 0 to 10VDC 2mA 28 29 MEASUREMENT OUTPUT No 1 0 to 5VDC 2mA 26 29 No 2 0 to 5VDC 2mA 21 29 0 to 10VDC 2mA Front Panel TOTAL 0 to 10VDC 2mA 30 29 CONTROL OUTPUT TOTAL 4 to 20 mA DC 10 11 500W Load OUTPUT for EXTERNAL INDICATOR 0 to 1 mA DC 14 15 ZERO TENSION CONTACT Rated 250VAC 30VAC 0 2A 12 13 REPLACEMENT PARTS Power Supply P C Board Meter Face 20 Lb Power Supply Transformer Meter Face 50 Lb Main P C Board Meter Face 100 L Selector S witch No 1 No 2 and Total Meter
12. age output signal The TM140A amplifies the signals from the two load cells separately S ee Figure 1 and feeds the Tension Indicator and several output circuits with the resultant amplified signals The Read O ut Selector S witch determines which of the buffered signals are displayed on the Tension Indicator and Recorder Terminals The Tension Indicator has a dual range scale The high range low range control is made through the Range S witch which also controls output at the Recorder Terminals Buffered signals are also present at Terminals 26 27 and 28 located on the back panel of the TM140A These three terminals are not affected by the position of the Read Out Selector S witch orthe Range S witch The total tension signal is also presented as a 4 20 mA signal at Terminals 10 and 11 and as a 0 10VDC signal at Terminals 29 and 30 These two signals are not buffered or filtered A zero tension circuit is also provided The zero tension circuit closes a Normally O pen N O relay when tension drops to a low level as would occur during a web break This circuit is controlled with a front panel switch and may be disabled when running at extremely low tensions to prevent nuisance tripping No 1 No 2 Total Read Out Selector Range itch Switch NSwitc Migh Tension Indicator Recorder Terminals 0 10VDC Terminal Block Connections on Back Panel FIGURE 1 1 FORM NO L 20185 B 0501 INDUSTRIAL MEX
13. ch to OFF FORM NO L 20185 B 0501 INDUSTRIAL MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com OPERATION NOTE Start the machine in operation with a web in place Set the TM140A Power Switch to ON Recorder Terminals 9 TTA AUS I 00 50 FIGURE 10 The Tension Indicator will display tension at the No 1 Sensor No 2 Sensor or Total W eb Tension as commanded by the Read Out Selector S witch S ee Figure 10 The Range Switch determines whether the display is in the black upper or red lower range on the Tension Indicator See Figure 10 The Recorder Terminals will put out a buffered signal proportional to the Tension Indicator with 0 10 volts being equal from zero to maximum full scale in high range The Recorder Terminals are also controlled by the Read Out Selector S witch and Range S witch See Figure 10 FORM NO L 20185 B 0501 Read Out Selector Switch ZERO SPAN Zero Tension S witch S witch S witch The Zero Tension Switch enables or disables the Zero Tension Circuit W hen running at very low tensions it may be helpful to trun the Zero Tension C ircuit OFF to prevent nuisance tripping S Figure 10 The Power Switch applies AC power ot the unit the red LED illuminates or turns the unit OFF the red LED extinguishes See Figure 10 GSS Naaza MEX 55 53 63 2331 MTY
14. ein fails of its essential purpose Limitation of Damages In no event shall Nexen be liable for any consequential indirect incidental or special damages of any nature whatso ever including without limitation lost profits arising from the sale or use of the Products Warranty Claim Procedures To make a claim under this warranty the claimant must give written notice of the alleged defect to whom the Product was purchased from and deliver the Productto same within one year of the date on which the alleged defect first became apparent Nexen Group Inc 800 843 7445 560 Oak Grove Parkway Fax 651 286 1099 Vadnais Heights MN 55127 www nexengroup com ISO 9001 Certified 13 FORM NO L 20185 B 0501
15. ter is not connected CP1 and CP2 Is the sum of CP1 and CP2 NO generated at CP3 The HIC is defective YES RANGE Switch is defective NO HIC is defective Can Zero Adjustment be made Is the Sensor s load plate in YES Unsuitable pillow block mounting contact with limitinq stops Sensor roll weight too high gstapet Sensor is defective NO YES Do the voltages between external Terminals 2 and 29 and between NO The Zero Adjustment circuit is Terminals 6 and 29 change when defective turning No 1 and No 2 Zero Adjustment VRs YES Do the voltages between Terminals 1 and 29 and between Incorrect external wiring or 5 and 29 change as above defective Sensor YES The HIC is defective 3 NO Can Span Adjustment be made YES Working force is small compared Is a voltage proportional to to Sensor s load range the tension value generated Unsuitable wrap angle between external Terminals 1 Sensor is defective and 2 or Terminals 5 and 6 YES Span is outside of specified range The HIC is defective Does the Tension Indicator retum to zero when tension is reduced to zero Are the sensor roll and Sensor mounted as specified MB Tenso Do not apply excessive force to Sensor Instruction Manual Sensor or hysteresis will occur YES No fault in the Tension Sensor The Sensor is defective FORM NO L 20185 B 0501 10
16. th new serviceably used or reconditioned P roduct or issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products Limitation of Nexen s Liability TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON FOR INCIDENTAL DAMAGES SPECIAL DAMAGES CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER BREACH OF CONTRACT NEGLIGENCE OR OTHER TORT OR OTHERWISE EVEN IF NEXEN SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE For all of the purposes hereof the term consequential damages shall include lost profits penalties delay images liquidated damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based upon related to or arising out of its contracts with its customers or other third parties In no event shall Nexen be liable for any amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of contract has been determined to exist The parties expressly agree that the price for the Products and the services was determined in consideration of the limitation on damages set forth herein and such limitation has been specifically bargained for and constitutes an agreed allocation of risk which shall survive the determination of any court of competent jurisdiction that any remedy her
17. the TM 140A into the Mounting S hell and tighten the two screws 7 FORM NO L 20185 B 0501 GES Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventasQindustrialmagza com CHECKING TERMINAL VALUES Remove the two screws from the TM140A front panel and slide the TM140A out of the mounting shell This will expose the Check Terminal and Common Pin The Common Pin is used for checking all voltages 1 20 except the power supply for the Tension Sensor When checking the Tension Sensor circuit Check CheckTe rmingl Terminal 6 is used as Common See Figure 12 and Table 1 FIGURE 12 TABLE 1 Check Terminal Values CHECK CHECK ITEMS NORMAL CONDITION POWER CP5 Power S upply for About 6VDC SUPPLY CP6 Sensor Common fluctuating DC CP7 Power S upply for About 15VDC Operational Amplifier O perational Amplifier Value corresponding to tension with 0 to fullscale 20 10 V 4 Tension Value on the Same as CP3 at HIGH Tension Indicator 2 xCP3 atLOW Range FORM NO L 20185 B 0501 8 GES Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com TROUBLESHOOTING PROCEDURE 1 START Are the DC power supply voltages normal Check voltages using the check YES terminals for the power supply Go to A Power Supply Circuit Check Is tension normally indicated Go to B Tension when a
18. ther 50 or 60 Hz The External Meter O utput Terminals 14 and 15 present a 0 1mA buffered output which is also proportional to full scale The 4 20 mA signal at Terminals 10 and 11 and the 0 10 volt signal at Terminals 29 and 30 are also proportional to 0 to maximum full scale but are not buffered W hen the tension falls to zero the normally open Zero Tension Relay contacts close This relay signal can be picked up at Terminals 12 and 13 The contacts are rated at 250VAC 0 2 Amp Variable Resistors Read O ut S elector S witch Zero Tension S witch S witch RECORDER Power S witch INDUSTRIAL MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventasQindustrialmagza com ZERO ADJUSTMENT NOTE Only perform Zero Adjustment when there is no web on the sensing roll and no other objects are sitting or leaning on the roll or sensors 1 Setthe Power S witch to ON 2 Setthe Zero Tension S witch to OFF 3 Setthe Read OutSelector S witch to No 1 and adjust the No 1 Zero Variable Resistor until the Tension Indicator displays 0 SPAN ADJUSTMENT See Figure 9 NOTE Zero Adjustment must be performed prior to conducti ng S pan Adjustment 1 Thread a rope or narrow web over the sensor roll in the normal web path making sure the rope is in the center of the sensor roll Hang a known weight weight must be less than the full scale high range on the Tension Indicator on
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