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Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual
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29
3.4.2
Output Dry Contacts
The Auxiliary Terminal Block has three output dry contact relays (see
Figure 16
Output dry contacts and EPO wiring
Table 6
Output dry contact relays
Port
Pin
Description
J23
1
Bypass Backfeed NO
3
Bypass Backfeed COM
5
Bypass Backfeed NC
J23
2
On UPS NO
4
On UPS COM
6
On UPS NC
J24
1
Input Backfeed NO
3
Input Backfeed COM
5
Input Backfeed NC
J24
2
Input Abnormal NO
4
Input Abnormal COM
6
Input Abnormal NC
J25
1
On Battery NO
3
On Battery COM
5
On Battery NC
J25
2
Low Battery NC
4
Low Battery COM
6
Low Battery NC
NOTE
All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded for maximum runs
between 80 and 200 feet (25-60m), respectively.
J23
J25
J24
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
1 3 5
1 3 5
1 3 5
2 4 6
2 4 6
2 4 6
(ON UPS)
(LOW BATTERY)
(ON BATTERY)
(BYPASS BACKFEED)
(INPUT BACKFEED)
(INPUT ABNORMAL)
See Table 6 for
pins and
description.
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