36
11.5 Control Wires
The terminal layout of control wires at TB1 is shown in Table 11.10.
Table 11.10 External Connections
No.
I/O
Signal Name
Operation
1
Output
Low Battery
Close at Low Battery
2
Output
Backup Operation
Close while Backup Operation
3
Output
Fault
Close by Faults
4
Output
Inverter Supply
Close during Normal Operation
5
Output
Warning
Close by Warnings
6
Input
P24
7
Input
Remote Run
Close to run UPS
8
Input
P24
9
Input
Remote Stop
Close to stop UPS
10
Output
Bypass Supply
Close during Bypass Operation
11
Output
Output Signal Ground
(Ground for pin #1~5 & #10)
12
Input
P24
Battery’s
13
Input
Battery Overheat
Overheat B-contact
14
Output
Bypass Breaker
15
Output
52C Trip Signal
Shunt Trip Signal by EPO
16
Output
Battery Breaker shunt trip
17
Output
72B Trip Signal
by EPO or Battery shutdown
18
Output
Battery breaker’s
19
Output
72B Aux. Contact
Auxiliary A-contact
The UPS, the battery cabinet, and the bypass breaker should be wired as shown in Figure
11.7.
10
○
11
○
12
○
13
○
14
○
15
○
16
○
17
○
18
○
19
○
Figure 11.7 - Connection among UPS, battery cabinet & bypass breaker
To Bypass
Input
TC
< Battery Cabinet >
Overheat
B-contact
Power source
for trip coil
TB1
Auxiliary A-
contact
Jumper wire if battery
OH is not applied
.
TC
Power source
To DC
Input
Bypass Breaker
< UPS Cabinet >
