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La Marche A12B Installation And Operation Manual

“constavolt” battery charger / power supply
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La Marche Manufacturing Company
www.lamarchemfg.com
A12B
"Constavolt"
Battery Charger / Power Supply
*Standard A12B Battery Charger in #6 Enclosure Shown
*A12B Battery Charger with Option 52E in #6 Enclosure Shown
Installation and Operation Manual
This manual is subject to change without notice. You may obtain the newest version of the manual at
www.lamarchemfg.com
106 Bradrock Dr. Des Plaines, IL 60018-1967
CPN 40594
Instruction Drawing Number: P25-LA12B-2
Tel: 847-299-1188
Fax: 847-299-3061
Revision A12
Rev. Date: 04/22
ECN: 23167
i

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Summary of Contents for La Marche A12B

  • Page 1 Battery Charger / Power Supply *Standard A12B Battery Charger in #6 Enclosure Shown *A12B Battery Charger with Option 52E in #6 Enclosure Shown Installation and Operation Manual This manual is subject to change without notice. You may obtain the newest version of the manual at www.lamarchemfg.com...

  • Page 2: Important Safety Instructions

    Important Safety Instructions Before using this equipment, read all manuals and other documents related to this charger and other equipment connected to this charger. Always have a copy of a charger’s manual on file nearby, in a safe place; if a replacement copy of a manual is needed, it can be found at www.lamarchemfg.com.

  • Page 3: Charger Location

    If any damage is observed, take pictures and contact the carrier immediately to file a damage claim. Contact La Marche for a Return Material Authorization number to have the charger sent back for evaluation and repair.

  • Page 4: Table Of Contents

    Moving the A12B ........................... 2 Installing the A12B........................3 Mounting the A12B ........................3 2.1.1 Wall-Mounting the A12B (#3, 6, and 7 Enclosures Only) .............. 4 2.1.2 Floor-Mounting the A12B (All Enclosures) ..................5 AC Input Connections ........................6 DC Output Connections ......................... 7 2.3.1...
  • Page 5 Troubleshooting and Replacing Power Silicon Diodes/Modules .............20 Appendix A: A12B Specifications ...................... 21 Appendix B: A12B Current Draw (12VDC / 24VDC Systems) ............22 Appendix C: A12B Current Draw (48VDC / 130VDC Systems) ............23 Appendix D: A12B Heat Losses (Single Phase) ................24 Appendix E: A12B Heat Losses (Three Phase) ..................

  • Page 6: Model Scope/General Description

    In normal operation, the A12B Battery Charger maintains a constant battery voltage from no load up to 115% its rated load capacity as indicated by the nameplate. If the external loads exceed nameplate capacity, the charger will attempt to carry the excess load up to its current limiting capacity.

  • Page 7: Equipment Handling

    Storing the A12B If the A12B is to be stored for more than a few days after delivery, it should be stored within its shipping container. The location chosen for storage should be within an ambient temperature of -40 to 185°F (-40 to 85°C) with a non-condensing relative humidity of 0 to 95%.

  • Page 8: Installing The A12B

    The charger should be mounted in an area free of explosive materials and away from any liquids. • The A12B utilizes convection cooling, so a clearance of at least 6 in (152 mm) of free air must be maintained on the top, bottom, left and right side for cooling air.

  • Page 9: Wall-Mounting The A12B (#3, 6, And 7 Enclosures Only)

    Wall-Mounting Procedure To wall-mount the A12B, install bolts on the wall rated to support the charger's weight plus a safety factor of at least four times. Refer to Tables 1 and 2 for charger weight specifications. Secure the charger on bolts, add appropriate mounting hardware, and tighten securely.

  • Page 10: Floor-Mounting The A12B (All Enclosures)

    Floor-Mounting the A12B (All Enclosures) Floor-Mounting Procedure To floor-mount the A12B, install four to six anchor bolts into the floor. Place the charger on the anchor bolts, add appropriate mounting hardware onto the floor-mounting anchor bolts, and tighten securely. Refer to Figure below for hardware specifications and floor-mounting dimensions.

  • Page 11: Ac Input Connections

    Table 4 – AC/DC & Ground Wire Size Minimum Requirements (All wires specified in the table are rated at 90 °C or 194 °F) NOTE: These are recommended sizes per La Marche Standards. The National Electrical Code (NEC) and Local Wiring Codes must be followed.

  • Page 12: Dc Output Connections

    DC Output Connections Before making any of the DC output connections, make sure you read and fully understand the DC Connection Procedure below, including Section 3.1. Select proper size for the DC wires using Table 4. If the distance between the charger’s DC output and the battery/load exceeds 10 feet, use the instructions below to minimize the voltage drop across the wire distance.

  • Page 13: Paralleling Connections

    MUST be of the same DC output rating and should all be A12B model chargers. Please confirm each charger model on the nameplate on front prior to making connections. Please follow the steps below: NOTE: Ground Detection should only be enabled on one charger when paralleling.

  • Page 14: Alarm Connections

    Alarm Connection Procedure Before making any connections to the A12B, ensure that the AC power is off at the main breaker box and that both charger’s fuses/breakers are disconnected/off. Verify that no voltage is present by using a voltmeter at all input and output terminals.

  • Page 15: External Temperature Compensation (Option 11W/11Y)

    NOTE: If option 11W or 11Y is included, please refer to appropriate option manual for instructions. Additional Option Connections The A12B charger may have been outfitted with several optional accessories or option packages. To determine the options included (if any) and the suggested connections, refer to the cover page of the manual package and...

  • Page 16: Operation

    Verify AC feeder breaker matches charger input protection rating. If the A12B battery charger is being powered up for the first time and battery connections have not been made, please follow the appropriate DC Connection Procedure on Section 2.3 which corresponds to the charger. Once proper connections are established, follow the Start-Up Sequence which corresponds to the charger.

  • Page 17: Front Panel

    Figure 8 – Standard A12B Front Panel (#3 Enclosure Shown) After the A12B has completed the startup sequence, LED indicators on the front panel will be lit according to the system’s status as pictured in the figure above. The analog voltmeter and ammeter will show both the charger’s DC output voltage and DC output current.

  • Page 18: Adjusting Parameters

    Adjusting Parameters The output voltage of the A12B charger is set to a default value, refer to Section 3.1, but should be adjusted to meet the battery manufacturer recommendations. There are two adjustment potentiometers located on the front of the charger (as shown on Figure 8).

  • Page 19: Frequently Asked Questions

    : Can two A12B chargers be connected in parallel? : Yes, two or more A12B chargers can be connected in parallel as long as they are of the same output voltage rating. Chargers in parallel are not designed to load share, unless the load sharing option (10G) is included. Refer to specific option manual for more information.

  • Page 20: Service

    Before working inside the A12B, ensure the AC power is off at the main breaker box and the battery has been removed from the charger’s DC output terminals, either by removing the battery cables or exercising the battery disconnect.

  • Page 21: Troubleshooting Procedure

    24-hour emergency number: (847) 296-8939 Ordering Replacement Parts Contact La Marche to place an order for spare or replacement parts. To order replacement parts; please provide the model and serial number of the battery charger, the part needed and the quantity required.

  • Page 22: Troubleshooting Chart

    (If Applicable) Incorrect, Damaged or Loose Cable/Harness Visually inspect and verify all internal Connections wiring using charger schematic. Contact La Marche Service Department Defective LEDs/Display Card for further troubleshooting instructions. Incorrect, Damaged or Loose Cable/Harness Visually inspect and verify all internal Connections wiring using charger schematic.
  • Page 23 Refer to Section 3.4 for output Incorrect Float/Equalize Voltage Settings adjustment instructions. High Output Voltage Contact La Marche Service Department Open Potentiometers on S2A-199 Assembly or Current for further troubleshooting instructions. Power down charger. Place jumper across center coil on saturable reactor.

  • Page 24: Ground And Short Circuit Test

    Isolate charger from DC system by removing all wires from charger output terminal. If ground fault on charger Ground Detection Fault clears, problem may be on external DC Ground Fault Present on Charger or DC System loads, battery, or wires. If ground fault is still present on charger, contact La Marche Service Department for further troubleshooting.

  • Page 25: Troubleshooting And Replacing Power Silicon Diodes/Modules

    4. All diodes must be checked if more than one diode is defective. 5. If the diode is defective, contact La Marche for complete heat sink replacement. Figure 9 – Diode (Schematic Symbol and Package Variations)

  • Page 26: Appendix A: A12B Specifications

    Appendix A: A12B Specifications ELECTRICAL Single Phase 60Hz: 120, 208, 220, 240, 480 or 600 Single Phase 50Hz: 220/240, 380 or 415 Three Phase 60Hz: 208, 240, 480 or 600 AC Input Voltages Three Phase 50Hz: 220/240, 380 or 415 Voltage Range: ±...

  • Page 27: Appendix B: A12B Current Draw (12Vdc / 24Vdc Systems)

    Appendix B: A12B Current Draw (12VDC / 24VDC Systems) NOTE: Maximum current draw is 120% of ratings shown. External feeder breaker should be sized to match the charger’s AC protection. Consult factory to confirm AC protection used on particular charger. Subject to change.

  • Page 28: Appendix C: A12B Current Draw (48Vdc / 130Vdc Systems)

    Appendix C: A12B Current Draw (48VDC / 130VDC Systems) AC Input Current Draw @ 100% Load Model Fuse 60 Hz Units 50 Hz Units Number Amps Size 240/220 (Amps) (BL) A12B-3-48V 1.5 / 1.6 A12B-6-48V 3 / 3.3 A12B-10-48V 2.5* 2.1*...

  • Page 29: Appendix D: A12B Heat Losses (Single Phase)

    Appendix D: A12B Heat Losses (Single Phase) NOTE: based on 75% efficiency at rated load. Subject to change. Model Number Watts In Watts Out Watts Lost BTU/Hr. A12B-3-12V A12B-6-12V A12B-10-12V A12B-15-12V A12B-20-12V A12B-30-12V A12B-40-12V A12B-50-12V A12B-60-12V 1056 A12B-75-12V 1320 1138...
  • Page 30 A12B-3-48V A12B-6-48V A12B-10-48V A12B-15-48V 1056 A12B-20-48V 1408 1056 1214 A12B-30-48V 2112 1584 1821 A12B-40-48V 2816 2112 2428 A12B-50-48V 3520 2640 3034 A12B-60-48V 4224 3168 1056 3641 A12B-75-48V 5280 3960 1320 3552 A12B-3-130V A12B-6-130V 1144 A12B-10-130V 1907 1430 1644 A12B-15-130V 2860...

  • Page 31: Appendix E: A12B Heat Losses (Three Phase)

    Appendix E: A12B Heat Losses (Three Phase) NOTE: based on 85% efficiency at rated load. Subject to change. Model Number Watts In Watts Out Watts Lost BTU/Hr. A12B-100-12V 1553 1320 A12B-125-12V 1941 1650 1004 A12B-150-12V 2329 1980 1205 A12B-175-12V 2718...
  • Page 32 A12B-20-130V 3365 2860 1740 A12B-30-130V 5047 4290 2611 A12B-40-130V 6429 5720 1009 3481 A12B-50-130V 8412 7150 1262 4351 A12B-60-130V 10094 8580 1514 5221 A12B-75-130V 12618 10725 1893 6526 A12B-100-130V 16824 14300 2524 8702 A12B-125-130V 21029 17875 3154 10877 A12B-150-130V 25235...

  • Page 33: Appendix F: Manufacturer's Standard Warranty

    If the Extended Warranty is purchased, the parts required for repair will also be at no cost but La Marche will notify the Purchaser of the costs of Labor to replace the defective part(s).

  • Page 34: Appendix G: Manufacturer's Extended Parts Warranty

    Should minor adjustments be required, the local La Marche sales representative should be contacted to provide this service only. All sales are final. Only standard La Marche units will be considered for return. A 25% restocking fee is charged when return is factory authorized. Special units are not returnable.

  • Page 35: Appendix H: Document Control And Revision History

    Appendix H: Document Control and Revision History Part Number: 40594 Instruction Number: P25-LA12B-2 Issue ECN: 12036 - 06/98 23167 – 04/22 22175 – 04/19 21692 – 01/18 21475 – 06/17 18985 – 04/11 17832 – 04/08 17650 – 11/07 16842 – 07/05 15761 –...

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