Emerson Liebert NX 480V - Figure 7 Input Dry Contacts; Input Dry Contacts; Maintenance Bypass Cabinet Interface; Table 1 Input Dry Contacts at X3

Electrical Connections
17
2.3.1 Input Dry Contacts
There are several input dry contacts at the X3 slot.
Figure 7 Input dry contacts
2.3.2 Maintenance Bypass Cabinet Interface
J26 and J30 are the MBC interface.
Table 1 Input dry contacts at X3
Position Name Description
J4.1 ENV
3
Battery Room Alarm (N.C.)
J4.2 BtG Battery Ground Fault Detection (N.C.)
J4.3 GEN
1,2
Generator Join Detection (N.O.)
J4.4 +12V +12V Power
1 - Must be configured using configuration software before becoming active.
2 - When activated, the charger current can be limited, via software, to a percentage of the full charger current (0-100%).
3 - Activating this feature turns the battery charger off.
Table 2 Maintenance bypass cabinet interface
Position Name Description
J26.1 T_IT
1
Input transformer over temperature (N.C.)
J26.2 AUX_I Reserved
J26.3 +12V +12V Power
J26.4 GND Power Ground
J30.1 FUSE Reserved
J30.2 F_FAN Fan Fail Alarm (N.C.)
J30.3 T_OT
1
Output Transformer Overtemperature (N.C.)
J30.4 AUX_O Reserved
1
- Must be configured using configuration software before becoming active.
NOTE
All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded
for maximum runs between 82 and 197 feet (25-60m), respectively.
+12V
GEN
BtG
ENV
GND GND
+12V
AUX_I
T_IT
AUX_0
T_0T
F_FAN
FUSE
OL FB
DRV
+12V
+12V+12V
+12V
X3
J4 J26 J30 J10
NOTE: The black square () on each slot indicates Pin 1.