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Lamarche A75D Installation And Operation Manual

Single phase scr filtered charger/battery eliminator
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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
Tel: 847 299 1188
Fax: 847 299 3061
La Marche Manufacturing Company
www.lamarchemfg.com
A75D D D D /A75DE
A75
A75
A75
/A75DE
/A75DE
/A75DE
Single Phase SCR Filtered
Charger/Battery Eliminator
Installation and Operation Manual
CPN 129767
Instruction Drawing Number: P25-LA75D-A75DE-3
Revision A00
Rev. Date: 07/14
ECN: 20494
i

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  • Page 1 La Marche Manufacturing Company www.lamarchemfg.com A75D D D D /A75DE /A75DE /A75DE /A75DE Single Phase SCR Filtered Charger/Battery Eliminator 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.

  • Page 3: Electrical Safety

    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 4: Unit Location

    Unit Location • Allow at least 6 inches of free air on all vented surfaces for proper cooling • Allow sufficient clearance to open the front panel for servicing. • Do not operate this unit in a closed-in area or restrict ventilation in any way. •...

  • Page 5: Table Of Contents

    Storing the A75D(E) ......................... 3 Moving the A75D(E) ......................... 3 Installing the A75D(E) ........................4 Mounting The A75D(E) ......................4 2.1.1 Wall-Mounting the A75D(E) (4B75 & 475 Only) ................ 5 2.1.2 Floor-Mounting the A75D(E) (All Cases) ................... 6 2.1.3 Rack-Mounting the A75D(E) ....................7 Changing Transformer Taps .......................
  • Page 6 Service............................31 Performing Routine Maintenance ....................31 Troubleshooting Procedure ....................... 32 Troubleshooting Chart......................33 Ordering Replacement Parts ..................... 33 Appendix A: A75D(E) Heat Losses ......................34 Appendix B: Manufacturer’s Warranty ...................... 35 Appendix C: Document Control and Revision History .................. 36...
  • Page 7 Table 1 - Case Type and Weight (6-30 ADC) ....................3 Table 2 - Case Type and Weight Table (35-100 ADC) ................. 3 Table 3 - Available mounting methods for each of the A75D(E) case sizes ............. 4 Table 4 - Available Rack Mount Configurations ................... 7 Table 5 - Input Terminal Connections .......................

  • Page 8: 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 9: 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 10: 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 11: 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 12: 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 13: 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 14: 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 15: 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 16: 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 17: Alarms

    2.5.1 Standard Alarms Two alarms relays (and 11 alarm LEDs) are included as a standard feature of the A75D(E). The included alarm relays are a Summary alarm and an AC Failure alarm. Each alarm includes one set of form C contacts enabling the customer to connect remote annunciators using connector J1 of the S2A-368S display/control card, refer to Figure 7.

  • Page 18: Understanding The Alarms

    2.5.2 Understanding the Alarms CHARGER FAIL ALARM occurs when one of the following conditions are present: Simultaneous Low DC Voltage and Low DC Current, Internal Over Temperature Protection, or High Voltage Shutdown. Refer to Table 5.3 “Troubleshooting Chart” for alarm condition possible causes. will trigger if the AC power to the unit is lost for longer than 20 seconds, the AC POWER FAIL ALARM green “AC ON”...
  • Page 19 OVERLOAD/CURRENT LIMIT ALARM is triggered when the current limit or overload thresholds have There are no relay contacts assigned for these alarms. been reached. When the unit is in current limit, the red “Overload/Current Limit” indicator LED will flash. See Section 3.4 Settings Menu for information on viewing and adjusting the current limit threshold value.

  • Page 20: Discrete Alarm Relay Board (Option 46R)

    Table 9 – Alarm Form ‘C’ Contact Ratings All alarms contacts for the A75D(E) are designed to be fail-safe. In other words, if both the AC and DC power are removed, each alarm will be indicating in its correct state. To accomplish this, certain alarm relays are de- energized on failure (such as AC Failure), and certain alarm relays are energized on failure (such as High DCV).

  • Page 21: Alarm Connection Procedure

    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 the unit’s breakers are off. Verify that no voltage is present by using a voltmeter at all input and output terminals.

  • Page 22: External Probe Connection Procedure

    2.6.1 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 output terminals.

  • Page 23: Enabling Load Sharing

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

  • Page 24: Remote Equalize Procedure

    2.7.3 Remote Equalize Procedure When chargers are connected for Load Sharing, they must also be set up to switch into equalize at the same time. This can be accomplished by using the remote equalize function of the charger. In addition to wiring the Load Share wire, the chargers’...

  • Page 25: Ground Detection

    The purpose of ground detection is to determine if the battery or loads have become grounded. Ground detection is available on all A75D(E) units. If the battery or loads are set up as floating, it is recommended that ground detection be enabled. When ground detection is enabled a positive or negative ground fault indicator will energize upon detection of a ground.

  • Page 26: Operation

    3.1.3 Start-Up Sequence Upon powering up the A75D(E) a start-up sequence is activated. This test flashes all of the units LEDs and LCD display, then the LCD will display the model and software number. There is also a “Lamp Test” button that can...

  • Page 27: Digital Control Board

    Figure 14 – A75D(E) Front Panel After the A75D(E) has completed the startup sequence, the “AC ON” and “FLOAT” LEDs should be on and the display should show the output voltage and current as pictured above in figure 14. The parameter displayed can be changed by pressing either the UP or DOWN arrows on the membrane.

  • Page 28: Selecting The Charging Mode

    The float mode can also be used for battery elimination, which means directly powering the DC load from the A75D(E). Equalize mode is used when it is necessary to equalize (or balance) the level of charge across all cells present in the battery.

  • Page 29: Settings Menu

    S2A-368S card. This serial number is the serial number of the Save/Load Confg A75D(E) charger and is set at the factory for new chargers. If a customer receives a replacement S2A-368S card, the serial number will have to be set via calibration.

  • Page 30: Save/Load Configuration

    A saved configuration file can be loaded to multiple A75D(E) Output Settings chargers to ease set up time if an installation has more than one A75D(E) chargers. The “Save/Load Confg” menu contains the options for saving or loading a Configuration file.
  • Page 31 >Current Limit output of the charger. The Current Limit is adjustable between 50% and 110% of Temp. Comp. the nameplate rating. The current limit setting is adjustable in 0.1A increments. A 30A A75D(E) charger has a current limit adjustment of 15-33A.

  • Page 32: Ac Volts Scale

    Discharge 105.0V Alarm 147.0 V Alarm threshold defaults above are based on a 60L charger output. The alarm threshold values shown above are not representative of the default values for all A75D(E) chargers. 3.4.6.2 Alarm Delays The Alarm Delays setting allows the customer to determine the time delay between the alarm condition and alarm indication.

  • Page 33: Communications Settings

    3.4.6.3 Alarms Included in Summary The summary alarm selects setting allows the customer to choose whether or not to include the Low Current The Low DC Voltage and Alarm, Ground Detection Alarms, and AC failure Alarm as part of the Summary Alarm. High DC Voltage alarms are included in the Summary alarm and cannot be removed.

  • Page 34: Data Logging

    3.4.9 Data Logging The A75D(E) now includes data logging as a standard feature. The log file is written >Data Logging as a .csv file. The “Data Logging” menu allows the user to adjust settings related to LCD Settings Section 4 Data Logging data logging.

  • Page 35: Test Menu

    3.5.1 Test LEDs The Test LEDs menu allows the customer to run a basic lamp test on the A75D(E). After selecting this menu press the “ENTER” button to light all of the LEDs on the display membrane. To end the LED test press the LEFT button.

  • Page 36: Data Logging

    Data Logging The A75D(E) now includes data logging as a standard feature. The log file is written as a .csv file format which can be opened using Microsoft Excel, or any number of free spreadsheet programs. You could even open on your smartphone! The data logs are written to a Micro SD card, which plugs into a slot located at the top of the charger control board (S2A-368S).

  • Page 37: 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 38: 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 39: Troubleshooting Chart

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

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

    Appendix A: A75D(E) Heat Losses (Based on 85% efficiency at 240V Input and rated load) AC DRAW WATTS IN WATTS OUT WATTS LOST BTU/HR 1253 1065 1392 1183 1670 1420 2088 1775 1069 2506 2130 1283 3341 2840 1711 1114...

  • Page 41: Appendix B: Manufacturer's 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 LaMarche units will be considered for return. A 25% restocking fee is charged when return is factory authorized. Special units are not returnable.

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

    Appendix C: Document Control and Revision History Part Number: 129767 Instruction Number: P25-LA75D-A75DE-3 Issue ECN: 20494 – 7/14...

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