La Marche A75D Installation And Operation Manual
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La Marche A75D Installation And Operation Manual

Single phase scr filtered charger/battery eliminator
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La Marche Manufacturing Company
www.lamarchemfg.com
A75D/A75DE
Single Phase SCR Filtered
Charger/Battery Eliminator
Installation and Operation Manual
106 Bradrock Dr. Des Plaines, IL 60018-1967
CPN 115668
Instruction Drawing Number: P25-LA75D-A75DE-1
Tel: 847 299 1188
Fax: 847 299 3061
Revision A12
Rev. Date: 01/17
ECN: 21278-1

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  • Page 1 La Marche Manufacturing Company www.lamarchemfg.com A75D/A75DE Single Phase SCR Filtered Charger/Battery Eliminator Installation and Operation Manual 106 Bradrock Dr. Des Plaines, IL 60018-1967 CPN 115668 Instruction Drawing Number: P25-LA75D-A75DE-1 Tel: 847 299 1188 Fax: 847 299 3061 Revision A12 Rev. Date: 01/17...

  • Page 2: Important Safety Instructions

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

  • Page 3: Unit Location

    In the unlikely event of internal damage, please inform the carrier and contact La Marche for advice on the risk due to any damage before installing the product. Verify that you have all the necessary parts per your order for proper assembly.

  • Page 4: Table Of Contents

      Installing the A75D(E) ......................... 2     Mounting The A75D(E) ........................ 2     2.1.1 Wall-Mounting the A75D(E) (4B75 & 475 Only) ................3     2.1.2 Floor-Mounting the A75D(E) (All Cases) ..................4     2.1.3 Rack-Mounting the A75D(E) ..................... 5  ...
  • Page 5 Ordering Replacement Parts ....................... 30     Appendix A: A75D(E) Specifications ......................31   Appendix B: A75D(E) Current Draw and Feeder Breaker Sizes ..............32   Appendix C: A75D(E) Heat Losses ......................33   Appendix D: Field Installable Accessory Kits ....................33  ...

  • Page 6: Table Of Figures

      Table 2 - Case Type and Weight Table (35-100 ADC) ..................1   Table 3 - Available mounting methods for each of the A75D(E) case sizes ............2   Table 4 - Available Rack Mount Configurations ..................... 5  ...

  • Page 7: Model Scope/General Description

    480VAC. Understanding the Model Number The A75D(E) model number is coded to describe the options that are included. Find the model number on the nomenclature nameplate of the charger. Then follow the chart to determine the configuration of your battery charger.

  • Page 8: Equipment Handling

    Storing the A75D(E) If the A75D(E) 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°...

  • Page 9: Installing The A75D(E)

    Verify, using the above charts, the method of mounting and the weight of the A75D(E). The location chosen for the charger should be within an ambient temperature range of 32 to 122˚F (0 to 50˚C) with a non-condensing relative...

  • Page 10: Wall-Mounting The A75D(E) (4B75 & 475 Only)

    To wall-mount the A75D(E), install four 0.25 in (6.4 mm) bolts on the wall rated to support the charger weight plus a safety factor of at least two times (for the 475 case 6 bolts are needed). Place the A75D(E) on the bolts, add appropriate mounting hardware and tighten.

  • Page 11: Floor-Mounting The A75D(E) (All Cases)

    975 and 72 cases include the height of the bracket in their overall height Floor-Mounting Procedure To floor-mount the A75D(E), install four 0.25in (6.4mm) bolts into the floor. Place the A75D(E) on the bolts, add appropriate mounting hardware, and tighten securely. The images below show the footprint of each A75D(E) case style.

  • Page 12: Rack-Mounting The A75D(E)

    2.1.3 Rack-Mounting the A75D(E) The A75D(E) can be installed in most relay racks with standard EIA hole spacing. If a relay rack is needed they are available for purchase from La Marche. The 4B75 & 475 cases are shipped from the factory with the (The same bracket is used for wall mounting necessary brackets installed for rear mounting on a 19”...

  • Page 13: Changing Transformer Taps

    NOTE: The A75D(E) is wired at the factory for 240 VAC, except on special request.. Before changing the PT taps, be sure that AC supply and DC loads to the A75D(E) are turned off and locked out. Verify that no voltage is present by using a voltmeter at all input and output terminals. Turning off the AC...

  • Page 14: Making The Ac Input Connections

    Making the AC Input Connections Before making any connections to the A75D(E) ensure that the AC Power is off at the main breaker box and that both of the unit’s breakers are off. Check that the source voltage and frequency matches the voltage and frequency listed on the charger nameplate.

  • Page 15: Making The Dc Output Connections

    Making the DC Output Connections Before making any of DC output connections make sure you have read and fully understand the DC Connection Procedure below. Select proper size for the DC wiring from the wire size table on the previous page. If the distance between the unit’s DC output and the DC load exceeds 10 feet, use the Power Cable Guide below to minimize the voltage drop across the wire distance.

  • Page 16: Alarms

    Alarms 2.5.1 Standard Alarms Two alarms are included as a standard feature of the A75D(E). The included alarms are a Summary alarm and an AC Failure alarm. Each alarm includes two form C contacts enabling the customer to connect multiple remote annunciators.

  • Page 17: 2.5.4 Alarm Connection Procedure

    Before making any connections to the A75D(E) ensure that the AC Power is off at the main breaker box and that both of are off. Verify that no voltage is present by using a voltmeter at all input and output terminals.

  • Page 18: Installing External Temperature Compensation (Option 11W/11Y)

    External Probe Connection Procedure Before making any connections to the A75D(E) ensure that the AC Power is off at the main breaker box and that both of the unit’s breakers are off. Verify that no voltage is present by using a voltmeter at all input and S2A-364 output terminals.

  • Page 19: Enabling Load Sharing

    Load Sharing Procedure Before making any connections to the A75D(E) ensure that the AC Power is off at the main breaker box and that both of the units’ breakers are off. Verify that no voltage is present by using a voltmeter at all input and output terminals.

  • Page 20: Installing Ground Detection Connection

    The optional Communication Cards, allow the customer to remotely connect to the A75D(E) battery charger with the protocol that best suits the installation. The protocols available are IEC 61850, Modbus, DNP 3.0 and SNMP. There are three different ports for connection to the communication card.

  • Page 21: Operation

    Factory Settings The factory settings of the A75D(E) are based on the customer order, unless otherwise specified all units are set at the factory with the following settings. Float Voltage: 2.17 Volts/Cell (V/C) for Lead Acid (LA)

  • Page 22: The Digital Display

    The Digital Display After the A75D(E) has completed start up the “AC ON” indicator on the front panel and either the “Float” or “Equalize” indicator on the display membrane will be lit. The LCD will display the system DC output voltage and DC output current.
  • Page 23 LOW DC V indicator will light if the DC voltage drops below the specified voltage threshold of the alarm for longer than 5 seconds. This is usually due to an AC Failure, or the charger is overloaded into deep-current limit. It could also be caused by maladjustments of the float/equalize potentiometers, or in rare cases by a failure of CUSTOMER CALIBRATION an internal charger component.

  • Page 24: Selecting The Charging Mode

    Selecting the Charging Mode The A75D(E) has two different settings for DC output voltage, float mode and equalize mode. Float charging mode is used for all normal battery charging needs, in the case of the A75DE the float mode can also be used for battery elimination (directly powering the DC load from the A75DE).

  • Page 25: Adjusting Parameters

    If the settings have been determined to be incorrect, adjustments may be made as detailed below. 3.5.1 Customer Calibration Mode In Customer Calibration Mode the customer can access and change various parameters used by the A75D(E). To access the Customer Calibration Mode, press both the...

  • Page 26: Setting The Float Voltages

    DNP 3.0 and Modbus instruction manual. Modbus Baud Rate This setting changes the Modbus Baud Rate. The default baud rate is 9600. The baud rate of the A75D(E) should be set to match the baud rate of computer that is connected.
  • Page 27 equipment has been powered-up and the settings have been determined to be incorrect. Rotating the potentiometer clockwise raises the equalize voltage and counterclockwise lowers the equalize voltage. The approximate adjustable range is as follows: 2.15 – 2.50 V/C (LA) (VRLA) 1.40 –...

  • Page 28: Service

    Service All work inside the A75D(E) should be performed by a qualified electrician. La Marche is not responsible for any damages caused by an unqualified technician. Performing Routine Maintenance In order for the A75D(E) to continue to operate properly it must undergo routine maintenance. The...

  • Page 29: Troubleshooting Procedure

    Troubleshooting Procedure Troubleshooting should be performed only by trained service personnel or experienced electricians. Before setting up any complicated testing or jumping to any conclusions, give the unit a general inspection. Check the following: 1. Check DC output cables, connections, battery type, and number of cells against the unit’s rating. 2.

  • Page 30: Troubleshooting Chart

    Troubleshooting Chart Symptom Possible Cause AC Breaker Trip Immediately Wrong AC Input Voltage (High Input Current) AC Input Taps on Power Transformer are Incorrectly Set Incorrect, Damaged or Loose Cable/Harness Connections DC Output Too High Defective Component on Heatsink Assembly DC Breaker Trip Immediately Incorrect, Damaged or Loose Cable/Harness Connections (High Output Current)

  • Page 31: Service Procedures

    "AC Fail" See Section 3.3 "Understanding Alarms" for possible causes Alarm/Indication "Low DCV" See Section 3.3 "Understanding Alarms" for possible causes Alarm/Indication "High DCV" See Section 3.3 "Understanding Alarms" for possible causes Alarm/Indication "Overload/Current Limit" See Section 3.3 "Understanding Alarms" for possible causes Alarm/Indication "Batt End of Discharge"...

  • Page 32: S2A-362 (Control Card)

    4.3.2 S2A-225C (Display Driver Card) In all A75D(E) units, the S2A-225C Circuit Card is located towards the top of the door or front panel. The card is affixed to the case using a screw-screw standoff. Before removing the card unplug all cables and connectors, Each connection port on the Card is labeled;...

  • Page 33: S2A-360S (12 Vdc Power Supply)

    4.3.4 S2A-360S (12 VDC Power Supply) 4B75 Case The S2A-360S is mounted to a bracket located at the top left of the case. The S2A-364 is mounted to the same bracket. If either the Relay Alarm Package or the DNP3/Modbus Package is installed there will be three screws at the front of the bracket that need to be removed first.

  • Page 34: 4.3.5 Heatsink Assembly

    4.3.5 Heatsink Assembly `4B75 Case In order to access the Heatsink Assembly the DIN Rail mounting bracket will need to be removed, see instructions above for removal of the DIN Rail mounting bracket. After the bracket is removed, remove the wires connected to the Heatsink Assembly (most connections are made within the assembly, those connections do not need to be removed).

  • Page 35: 4.3.6 Filter Capacitors

    4.3.6 Filter Capacitors 4B75 Case In order to access the capacitors the DIN Rail mounting bracket will need to be removed, see instructions above for removal of the DIN Rail mounting bracket. After the bracket is removed, disconnect the wires connecting to the capacitors.

  • Page 36: S2A-172 (Reverse Polarity Card)

    The Reverse Polarity Card is only installed as part of the Reverse Polarity Option Package (Option 217). If Option 217 was not included, the A75D(E) will not have a Reverse Polarity Card. The S2A-172 Circuit Card is located towards the top of the door or front panel. Before removing the card Each connection port on the Card is unplug all cables and connectors, make a note of where the cables plug in.

  • Page 37: S2A-302S (Communication Card)

    4.3.10 S2A-302S (Communication Card) The Communication Card is only installed as part of the DNP3 or Modbus Option Packages (Option 21P or 21Q). If Option 21P/21Q was not included, the A75D(E) will not have a Communication Card. 4B75 Case The S2A-302S is mounted to a bracket located at the top left of the case. If the unit has the Relay alarm package, the S2A-198B card is mounted on the same bracket.

  • Page 38: Appendix A: A75D(E) Specifications

    A75DE - 30mV RMS, with or without battery ± 0.5% from no load to full load over the specified input voltage, frequency and Regulation ambient temperature range. When connected identical A75D/A75DE units are forced to share the load equally Load Sharing (within ± 5%). Meters LCD Digital Display DC Ammeter &...

  • Page 39: Appendix B: A75D(E) Current Draw And Feeder Breaker Sizes

    Appendix B: A75D(E) Current Draw and Feeder Breaker Sizes AC input Current Draw @ 100% Load Model Number DC Amps (Recommended Feeder AC Supply Breaker) 120/ 240/ 208 (ABD) 120 (A) 240 (B) 208 (D) 480 (C) A75D(E)-6-24V 3/2/2 (5/5/5)

  • Page 40: Appendix C: A75D(E) Heat Losses

    6559 Appendix D: Field Installable Accessory Kits La Marche offers multiple accessory kits that are available for purchase separately from the A75D(E) units. These accessories are installable in the field. Not all accessory kits will be installable in all enclosures.

  • Page 41: Appendix E: Manufacturer's Warranty

    Special units are not returnable. In no event shall La Marche Manufacturing Co. have any liability for consequential damages, or loss, damage or expense directly or indirectly arising from the use of the products, or any inability to use them either separately or in combination with other equipment or materials, or from any other cause.

  • Page 42: Appendix F: Document Control And Revision History

    Appendix F: Document Control and Revision History Part Number: 115668 Instruction Number: P25-LA75D-A75DE-1 Issue ECN: 17742 – 01/08 21278-1 – 01/17 20596 – 10/14 20535 – 08/14 20317 – 02/14 20098 – 08/13 19609 – 07/12 19297 – 11/11 19164 – 6/11 18985 –...

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