Apc DC Power Plant MX28B-1200 User Manual download pdf (Page 25)

Revision B MX28B-1200 PRODUCT MANUAL

MX28B-1200/2400 19

5.6.2 Control Wiring

Cables for controlling and monitoring the rectifiers and circuit breakers/fuses must be run from

expansion frames to the control unit in the base frame. There are three basic cables used for

these functions:

•= The AWA-0970 ten-pin ribbon cable connector handles serial communications for rectifier

reporting and control. This cable connects to the J1 connector of the DC/DC converter

PCB’s (EAA-0111) in each power box frame.

•= Circuit breaker reporting in extension power and distribution bays is communicated back to

the control unit through the AWA-0972 cable. This cable is connected to J15 on the control

unit interface PCB in the base unit and runs to connector J2 on the Alarm Extension PCB

(EAA-0072) in the remote bay. Additional bays are connected via the same cable, which

connects up to four Alarm Extension PCB’s.

•= Fuse reporting is routed from the Fuse Sense PCB (ADV-1204) to the control unit via cable

AWA-0967.

Refer to Figure 5-6 for a pictorial representation of multi-bay cable connection. Figure 5-7

shows the information as a wiring diagram.

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Apc DC Power Plant MX28B-1200 User Manual Page 25