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3.3.3
Battery Circuit Breaker Control Interface
J10 is the Battery Circuit Breaker (BCB) box interface.
Table 3
BCB control interface
Name
Position
J10.1
DRV
J10.2
FB
J10.3
GND
J10.4
OL
NOTE
All auxiliary cables of terminal must be double-insulated. The wire must be 600V, 18-16 AWG
stranded for maximum runs between 82 and 197 feet (25-60m), respectively.
3.3.4
Output Dry Contacts
There are three output dry contact relays at the X1 slot (see Figure 7 and Table 4).
Figure 7
Output dry contacts and EPO wiring for firmware before M170
X1
NOTE: The black square on each slot
Table 4
Output dry contact relays
Position
Name
J13.2
BFP_O
J13.3
BFP_S
J13.4
BFP_C
J21.2
INV_O
J21.3
INV_S
J21.4
INV_C
J25.2
ACF_O
J25.3
ACF_S
J25.4
ACF_C
NOTE
All auxiliary cables of terminal must be double-insulated. The wire must be 600V, 18-16 AWG
stranded for maximum runs between 82 and 197 feet (25-60m), respectively.
®
™
Liebert
NX
Description
BCB Driver Signal
BCB Contact State
Power Ground
BCB On-Line - Input - This pin will become active when
BCB interface is connected. (N.O.)
J13
Description
Bypass feedback protection relay. Normally open. Closed when bypass SCR is
shorted;. 5A, 250VAC/24 VDC
Bypass feedback protection relay center; 5A, 250VAC/24 VDC
Bypass feedback protection relay. Normally closed. Open when bypass SCR is shorted;
5A, 250VAC/24 VDC
Inverter mode relay. Normally open. Closed when UPS is in inverter mode.; 5A,
250VAC/24 VDC
Inverter mode relay center; 5A, 250VAC/24 VDC
Inverter mode relay. Normally closed. Open when UPS is in inverter mode;
5A, 250VAC/24 VDC
Main input fault relay. Normally open. Closed when main input is in fault;
5A, 250VAC/24 VDC
Main input fault relay center; 5A, 250VAC/24 VDC
Main input fault relay. Normally closed. Open when main input is in fault;
5A, 250VAC/24 VDC
J21
indicates Pin 1.
21
Electrical Connections
J25
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