Vertiv Liebert EXM - Dry Contacts; Input Dry Contacts; Figure 17 Auxiliary Terminal Block Detail (Control Module Front Panel)

Vertiv™ | Liebert® EXM
™
50-250kVA, 480V, 60Hz User Manual | 34
Figure 17 Auxiliary terminal block detail (control module front panel)
3.4 Dry Contacts
The UPS provides input dry contacts and output dry contacts on the Auxiliary Terminal Block
(ATB).
3.4.1 Input Dry Contacts
External input dry contacts are connected via the ATB. Dry contacts are available for
environment detection, battery ground fault detection, etc.
The UPS accepts external signal from zero-voltage (dry) contacts connected through external
dry contact terminals produced, and these terminals are on the static bypass assembly. Through
software programming, these signals become active when these contacts connect to +12V to
ground (in the most left side). The cables connected to the monitor board must be separated
from power cables. Moreover, these cables should be double-insulated with a typical cross-
section of 0.5 to 1mm
2
for a maximum connection length between 82 and 165ft. (25-50m). The
ATB has several input dry contacts.
24 6
BFP_O
J23
J25
J24
135
246
135
246
BFP_S
BFP_C
135
IN
V_O
IN
V_S
IN
V_C
M
AIN_O
M
AIN_S
M
AIN_C
MFP_O
MFP_S
MFP_C
R
ESV_O
R
ESV_S
R
ESV_C
RESV_O
RESV_S
RESV_C
135791113151719212325272931
2468
10 12
14
16 18 20
22 24
26
28
30 32
J26
Q1 STA
TUS
GND_D
RY
Q2 STA
TUS
GND_D
RY
Q3 STA
TUS
GND_D
RY
Q5 STA
TUS
GND_D
RY
GND_D
RY
RESV2
RESV3
GND_D
RY
UT1 48
5+
GND_M
ON
UT1 48
5-
GEN MODE
+12V_DR
Y
GND_DR
Y
GND_DR
Y
TMP BATT IN
_
RESERVED
ENV_DET
GND_DR
Y
CHG SHUT
GND_DR
Y
RESV1
UT2 485+
UT2 485-
GND_DR
Y
J22
135791113151719
2 4 6 8 10 12 14 16 18 202 4 6 8 10 12 14 16 18 20
135791113151719
12V_DRV
BCB_ON
GND_DRY
12V_A
GND_DRY
TMP_BATT
BCB STATUS
GND_DR
Y
BATT_GND_FAULT
PCAN H
PCAN H
1
P MON CAN
H
PMON C
AN H1
PSER B
US
H
PSER B
US H1
LBS PORT PARALLEL PORT
J20
J19
RS232
LCD
J30
J2
J1
4321
EPO-NO
+12V
+12V
EPO-NC
J21
NC
NC
NC
NC
J2 J1 J19 J20 J21 J22 J26 J23 J24 J25
J30