UPS1000Z, UPS1200Z, UPS500G and UPS600G Uninterruptible Power Supplies Caterpillar


Parallel Cabinet Interface PWA

Usage:

UPS 600G DLD

Description



Illustration 1g01272491
(1) Parallel cabinet interface board

The parallel cabinet interface board (PCI) (1) is located on the left panel in the MMS cabinet.

The PCI board (1) acts as a switch hub for the following connections:

  • RS-232

  • Modem connections that are in MMU cabinets

Lines for the modem will be routed to the PCI. RS-232 lines that are for each MMU cabinet in the system will be routed to the PCI. Rotary switches that are located on the PCI can then be used to select the MMU cabinet that will be accessed.

Removal Procedure

Refer to Systems Operation, Testing and Adjusting, UENR3954, "Internal Component Preremoval Steps (MMS System Cabinet)" in order to shut down the system and gain access to internal components.

Note: Always practice "Electrostatic Discharge" (ESD) prevention when handling printed circuit assemblies.



    Illustration 2g01272477
    Parallel cabinet interface board

  1. Disconnect all connectors. Refer to Illustration 2. Verify each labeling on the connector with the location of the wire. Verify each label on each connector.

  2. Disconnect the four white plastic standoffs that connect the board (1) to the left panel.

    Note: The board (1) must be removed from the standoffs without bending the board (1).

Installation Procedure

  1. Position the board (1) in the cabinet over the four white standoffs that are connected to the left panel.

  2. Push the board (1) onto all the standoffs simultaneously. Verify that all standoffs are locked in place.

  3. Connect the wire connectors into the correct connectors on the board (1). Check the labels on each connector for proper placement. Refer to Illustration 2.

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