Eaton 9395 - Page 64

UPS SYSTEM INSTALLATION
Eaton 9395 UPS (225–275 kVA) Installation and Operation Manual S 164201683 Rev 3 www.eaton.com/powerquality
4-20
Table 4‐1. TB1, TB2, and TB3 Interface Connections
Terminal TB1 Name Description
1 REPO NC
Input: Normally‐closed dry contact used to activate UPS EPO from a remote switch.
2 REPO Return
3 REPO NO
Input: Normally‐open dry contact used to activate UPS EPO from a remote switch.
4 REPO Return
5 Battery Aux
Input: Normally‐open contact used to indicate when UPS battery breaker is open or
closed.
6 Battery Aux Common
7 48 Vdc Battery Shunt Trip +
Output: Contacts used to open battery breaker or disconnect.
8 48 Vdc Battery Shunt Trip –
9 Output Contactor K3 NC Aux
Output: Normally‐closed contact opens when output contactor closes.
10
Output Contactor K3 NC Aux
Common
Terminal TB2 Name Description
1 Pull Chain
Output: Backup control for parallel operation.
2 Pull Chain Common
3 Alarm Relay NC
Output: General purpose normally-closed (NC) relay contact.
4 Alarm Relay Common
5 Alarm Relay NO
Output: General purpose normally-open (NO) relay contact.
6 Alarm Relay Common
7 Not Used
8 Not Used
9 Not Used
10 Not Used
Terminal TB3 Name Description
1 Building Alarm 1
Input: Programmable UPS alarm, activated by a remote dry contact closure.
2 Building Alarm 1 Return
3 Building Alarm 2
Input: Programmable UPS alarm, activated by a remote dry contact closure.
4 Building Alarm 2 Return
5
Building Alarm 3
Default: Charger Off
Input: Programmable UPS alarm, activated by a remote dry contact closure. Default
function set for charger off.
6 Building Alarm 3 Return
7
Building Alarm 4
Default: On Generator
Input: Programmable UPS alarm, activated by a remote dry contact closure. Default
function set for on generator.
8 Building Alarm 4 Return
9
Building Alarm 5
Default: Maintenance Bypass
Input: Programmable UPS alarm, activated by a remote dry contact closure. Default
function set for maintenance bypass.
10 Building Alarm 5 Return
NOTE “Return“ indicates connection to electronics circuit ground. “Common” indicates connection to common side of isolated relay contact.