Pin Configuration
4
3.0
P
IN
C
ONFIGURATION
The card has two terminals blocks, TB1 (green, numbered 1-9) and
TB2 (black, 10-18), as shown in
.
Figure 1
Pin location and numbering
Refer to your Liebert product user manual for the pin configuration for
the terminal blocks. The pin functions in
apply only to the
Liebert units listed in
Section 1.0 - Introduction
.
Table 1 Relay card pin configuration
Pin
Function
Operation
1
Common - Low Battery
2
Low Battery
Closed if Low Battery point occurs.
3
Low Battery
Closed if battery is OK
4
Common - UPS Fault
5
UPS Fault
Closed if UPS fault occurs
6
UPS Fault
Closed if no UPS failure
7
Common - On Battery
8
On Battery
Closed if On Battery power (Utility failure)
9
On Battery
Closed if not On Battery power (Utility OK)
10 Signal Ground
Use for UPS Any-Mode Shutdown
11 Signal Ground
Use for UPS Any-Mode Shutdown
12 UPS Any-Mode Shutdown
Turn UPS output Off when shorted
to Pin 10 or 11
13 Summary Alarm*
Closed if no alarm conditions are present
14 Summary Alarm*
Closed if Summary Alarm occurs
15 Common - Summary Alarm*
16 On UPS
Closed if On UPS (inverter) power
17 On Bypass
Closed if On Bypass
18 Common - On Bypass
10
18
9
1
TB1
green
TB2
black