American Power Conversion MX28B2400, MX28B4800 manual Circuit Breaker/LVD Ribbon Cable Connections

Circuit Breaker/LVD Ribbon Cable Connections

Additional cables must be connected between cabinets to ensure that the circuit breaker alarms in the expansion bays are reported correctly. The circuit breakers and LVDs are connected together through the use of a Circuit Breaker / LVD Expansion Board. The ribbon cables on the left hand side of the board go to the bay to the left. The ribbon cables on the right hand side of the board go to the bay to the right. If there is an open Alarm Contact Bus connector (no bay to the side of the unit) the cable connector is left open and no further action is required. However if the LVD Bus ribbon cable connector is open, the pins nearest the connector will have to be jumpered. Install the jumpers using Figure 3.2-5as a guide to jumper orientation. If a cable is installed remove the jumpers on the pins nearest the installed ribbon cable.

Figure 3.2-5 Circuit Breaker / LVD Expansion Board

MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual Page 8