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Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual
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27
Figure 14
Auxiliary terminal block detail (static switch assembly front panel)
3.4
Dry Contacts
The UPS provides input dry contacts and output dry contacts on the auxiliary terminal block.
3.4.1
Input Dry Contacts
External input dry contacts are connected via the dry contact terminal block. 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 dry contact terminal block has several input dry contacts.
Figure 15
Input dry contacts
J23
J25
J24
J2
J30
RS232
J1
J19
J20
J21
J22 J26
EPO
-NO
P_
M
O
N
_C
AN_
L
EPO
-NC
+1
2
V
+1
2
V
12V_DR
V
+
12V_DR
Y
ENV_DET
GEN_MODE
12V_DR
Y
TMP_B
A
TT
TMP_B
A
TT_IN
P_
SE
R_
BUS_H
P_
SE
R_
BUS_
L
LIB_
AB
N
O
R
BC
B
_ST
A
T
US
BC
B
_O
N
LINE
RIB_
ST
A
T
U
S
M
IB
_S
TAT
US
M
O
B_
ST
AT
US
M
B
B_
ST
A
T
U
S
BIB_
S
TAT
U
S
LIB_
TRIP
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
C
HG_
S
H
UT
UT
2_
4
85
-
UT
1_
4
85
-
UT
2_
4
85
+
UT
1_
4
85
+
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
DR
Y
GN
D_
M
O
N
N
C
C
O
M
N
O
N
C
C
O
M
N
O
N
C
C
O
M
N
O
N
C
C
O
M
N
O
N
C
C
O
M
N
O
N
C
C
O
M
N
O
GN
D_
DR
Y
LBS PORT
LCD
4 3 2 1
PARALLEL PORT
1 3 5 7 9 11 13 15 17 19
1 3 5 7 9 11 13 15 17 19
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
1 3 5
1 3 5
1 3 5
2 4 6 8 10 12 14 16 18 20
2 4 6 8 10 12 14 16 18 20
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
2 4 6
2 4 6
2 4 6
P_
C
AN_
H
P_
C
AN
_L
(ON UPS)
(LOW BATTERY)
(ON BATTERY)
(BYPASS BACKFEED) (INPUT BACKFEED)
(INPUT ABNORMAL)
B
A
TT_GND_F
A
U
LT
P_MON_C
AN_H
J26
+
12V_DR
Y
ENV_DET
GEN_MODE
TMP_B
A
TT_IN
RIB_S
T
A
T
US
MIB_S
T
A
T
US
MOB_S
T
A
TUS
MBB_S
T
A
T
US
BIB_S
T
A
T
US
GND_DR
Y
GND_DR
Y
GND_DR
Y
CHG_SHUT
UT2_485-
UT1_485-
UT2_485
+
UT1_485
+
GND_DR
Y
GND_DR
Y
GND_DR
Y
GND_DR
Y
GND_MON
GND_DR
Y
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
See Table 5 for pins
and description.
Summary of Contents for Liebert EXM
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