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La Marche A75D Installation and operation manual

Other manuals for A75D: Instructions manual
Manual is about: Single Phase SCR Filtered Charger/Battery Eliminator

Summary of A75D

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    Installation and operation manual la marche manufacturing company www.Lamarchemfg.Com a75d/a75de single phase scr filtered charger/battery eliminator 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 ...

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    I 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 w...

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    Ii 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.  do not set any battery on top of this unit.  neve...

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    Iii table of contents important safety instructions ....................................................................................................................... Electrical safety .................................................................................................................

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    Iv 3.1.1 checking the installation ........................................................................................................ 14 3.1.2 starting/stopping the a75d(e) ............................................................................................ 14 3.1.3 start-up sequence ....

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    V table of figures figure 1 - keyhole slot used ....................................................................................................................... 3 figure 2 - 4b75 case bolt pattern....................................................................................................

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    Vi model scope/general description the la marche models a75d and a75de are scr battery chargers. These models are designed with a lcd digital display. The a75de is designed as a battery eliminator and can be operated with or without batteries connected. The la marche model a75d(e) series battery cha...

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    1 equipment handling 1.1 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° c) with a non-condensing relati...

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    2 2 installing the a75d(e) 2.1 mounting the a75d(e) when mounting the a75d(e) in any configuration, consider the size and weight of the unit. The wall, rack, and/or floor must be able to support the weight of the unit as well as an additional safety factor. Verify, using the above charts, the method...

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    3 2.1.1 wall-mounting the a75d(e) (4b75 & 475 only) the 4b75 & 475 cases of the a75d(e) are shipped from the factory with the necessary brackets installed for wall-mounting (the same bracket is used for rear mounting on a 19” relay rack and cannot be removed). The 975 & 72 cases do not come with wal...

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    4 2.1.2 floor-mounting the a75d(e) (all cases) floor-mounting the 975 & 72 case is standard. If it is desired to floor mount a charger with the 4b75 or 475 cases you will need the floor-mount bracket note: the floor mount bracket adds an additional 3 in (76.2 mm) to the overall height of 4b75 and 47...

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    5 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 necessary brackets installed for rear mounting on a ...

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    6 2.2 changing transformer taps note: this procedure refers only to a75d(e) battery chargers that are rated for 6 to 25 adc. A75d(e) battery chargers that are rated for 30 to 100 adc do not include transformer taps. Before wiring ac power to the a75d(e), check the wiring of the power transformer pt,...

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    7 2.3 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. For ...

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    8 2.4 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 d...

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    9 2.5 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. The summary alarm will trigger unde...

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    10 2.5.3 alarm relay contact states 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...

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    11 2.6 installing external temperature compensation (option 11w/11y) the natural voltage of a battery changes as a function of temperature change. As the battery temperature rises, the effective voltage of the battery decreases. Without temperature compensation, the battery charger will always produ...

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    12 2.7 enabling load sharing all a75d(e)units include the load sharing feature. Load sharing allows the customer to parallel with any identical a75d(e) to share a dc load and therefore reduce the strain on each charger. Chargers to be paralleled must be the same output. Load sharing procedure before...

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    13 2.8 installing ground detection connection ground detection detects if the battery becomes grounded. Ground detection is available on all a75d(e) units. If the battery is set up as floating, it is recommended that ground detection be enabled. If the battery is either positively or negatively grou...

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    14 3 operation 3.1 starting the a75d(e) all equipment is shipped from the factory fully checked and adjusted based on the customer order. Do not make any adjustments unless the equipment has been powered-up and the settings have been determined to be incorrect. Factory settings the factory settings ...

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    15 3.2 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. Pushing the (up) or (down) button ...

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    16 the 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 poten...

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    17 3.4 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...

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    18 lv reset voltage and eq timer duration are adjustable via the settings menu. When set to mode p4 auto eq, you can still manually initiate an eq cycle at any time as in the mode p0. 3.5 adjusting parameters all equipment is shipped from the factory fully checked and adjusted based on the customer ...

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    19 this setting changes the mode of the equalize timer. The equalize timer mode determines when the charger will go into an equalize charging cycle. The timer modes are mode 0 (p0), mode 1 (p1), mode 2 (p2), mode 3 (p3), and mode 4 (p4). The default setting for the equalize timer mode is mode 0 (p0)...

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    20 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 – 1.70 v/c (nc).

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    21 4 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. 4.1 performing routine maintenance in order for the a75d(e) to continue to operate properly it must undergo routine maintenance. ...

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    22 4.2 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...

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    23 4.3 troubleshooting chart symptom possible cause wrong ac input voltage 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 incorrect, damaged or loose cable/harness connections in...

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    24 see section 3.3 "understanding alarms" for possible causes see section 3.3 "understanding alarms" for possible causes see section 3.3 "understanding alarms" for possible causes see section 3.3 "understanding alarms" for possible causes see section 3.3 "understanding alarms" for possible causes se...

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    25 removing the din rail mounting bracket in the 4b75 case a large number of components of the a75d(e), when using the 4b75 case, are mounted behind or require access behind the din rail mounting bracket. In order to remove the din rail mounting bracket, all wiring to the components on the din rail ...

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    26 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 tha...

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    27 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 connectio...

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    28 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. Remove the three bolts h...

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    29 4.3.7 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 fron...

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    30 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 le...

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    31 appendix a: a75d(e) specifications electrical ac input voltage range +10% / -12% frequency range 60hz ± 5% dc output 6 - 100 adc 24, 48, or 130vdc output filtering a75d - no filtering a75de - 30mv rms, with or without battery regulation ± 0.5% from no load to full load over the specified input vo...

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    32 appendix b: a75d(e) current draw and feeder breaker sizes model number dc amps ac input current draw @ 100% load (recommended feeder ac supply breaker) 120/ 240/ 208 (abd) 120 (a) 240 (b) 208 (d) 480 (c) 24 volt systems a75d(e)-6-24v 6 3/2/2 (5/5/5) --- --- --- --- a75d(e)-12-24v 12 6/3/3 (10/5/5...

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    33 appendix c: a75d(e) heat losses (based on 85% efficiency at 240v input and rated load) dca dcv ac draw watts in watts out watts lost btu/hr 6 24 2 278 237 42 143 12 24 3 418 355 63 214 16 24 4 557 473 84 285 20 24 5 696 592 104 356 25 24 6 835 710 125 428 30 24 7 974 828 146 499 35 24 9 1253 1065...

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    34 appendix e: manufacturer’s warranty all la marche manufacturing co. Equipment has been thoroughly tested and found to be in proper operating condition upon shipment from the factory and is warranted to be free from any defect in workmanship and material that may develop within three (3) years fro...

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    35 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 – 4/11 18367 – 7/09 18338 – 6/09 17990 – 9/08...