Vertiv Liebert EXM - 3.4.2 Output Dry Contacts

Vertiv™ | Liebert® EXM
™
50-250kVA, 480V, 60Hz User Manual | 37
3.4.2 Output Dry Contacts
The Auxiliary Terminal Block has three output dry contact relays (see Figure 19 and Table 5).
Figure 19 Output dry contacts and EPO wiring
Table 5 Output dry contact relays
Port Pin
Name Description
J24
1MFP_O
Rectifier back-feed normally open contact. Open when there is no
back-feed.
3 MFP_S Rectifier back-feed common contact.
5MFP_C
Rectifier back-feed normally closed contact. Closed when there is no
back-feed.
J23
2INV_O
Inverter state normally open contact. Open when the inverter is
abnormal.
4 INV_S Inverter state common contact.
6INV_C
Inverter state normally closed contact. Closed when the inverter is
normal.
BFP_O
BFP_S
BFP_C
INV_O
INV_S
INV_C
MAIN_O
MAIN_S
MAIN_C
MFP_O
MFP_S
MFP_C
RESV_O
RESV_S
RESV_C
RESV_O
RESV_S
RESV_C
1
3
5
1
3
5
1
3
5
24
6
24
6
24
6
J23
J24
J25