Dry Contacts; Input Dry Contacts; Maintenance Bypass Cabinet Interface; Figure 8 Input Dry Contacts - Liebert NX 10kVA Installation Manual

2.3

Dry Contacts

The UPS provides input dry contacts and output dry contacts.
2.3.1

Input Dry Contacts

There are several input dry contacts at the X3 slot.
Figure 8 Input dry contacts
Table 1

Input dry contacts at X3

Position Name
J4.1 ENV
J4.2 BtG
J4.3 GEN
J4.4 +12V
1 - Must be configured by 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.
2.3.2

Maintenance Bypass Cabinet Interface

J26 and J30 are the MBC interface.
Table 2 Maintenance bypass cabinet interface
Position Name
J26.1 T_IT
J26.2 AUX_I
J26.3 +12V
J26.4 GND
J30.1 FUSE
J30.2 F_FAN
J30.3 T_OT
J30.4 AUX_O
1 - Must be configured by software before becoming active
NOTE
All auxiliary cables of terminal must be double insulated. Wire should be 16-20AWG stranded.
Description
3
Battery Room Alarm (N.C.)
Battery Ground Fault Detection (N.C.)
1,2
Generator Join Detection (N.O.)
+12V Power
Description
1
Input transformer over temperature (N.C.)
Reserved
+12V Power
Power Ground
Reserved
Fan Fail Alarm (N.C.)
1
Output Transformer Overtemperature (N.C.)
Reserved
15
Electrical Connections