UPS 40 – 160 kVA, 400V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
31
Terminal TB 1
Name
Description
1
External EPO NC
Normally Open and Normally Closed dry contacts used to
activate EPO of UPS from a remote switch.
2
External EPO Com
3
External EPO NO
4
External EPO Com
5
Battery Aux +
Contacts used to indicate whether UPS battery breaker or
disconnect is open or closed
6
Battery Aux -
7
Battery Uvr +
Contacts used to open battery breaker or disconnect
8
Battery Uvr -
9
Building Alarm
Programmable UPS alarm. Activated by a remote dry
contact closure.
10
Building Alarm Return
Table 4.
TB1 terminal interface connections.
Note!
A jumper wire must be connected between pins 8 and 9 on TB1, if the normally closed
EPO contact is not used.
Terminal TB 2
Name
Description
1
Building Alarm
Programmable UPS alarm. Activated by a remote dry
contact closure.
2
Building Alarm Return
3
On Bypass relay
Normally Open contact closes when UPS is on bypass
4
On Bypass Relay Return
5
Alarm Relay NC
General purpose Normally Open and Normally Closed relay
contacts.
6
Alarm Relay Com
7
Alarm Relay NO
8
Alarm Relay Com
9
On Inverter Relay
Normally Open contact closes when output contactor
closes
10
On Inverter Relay Return
Table 5
.
TB2 terminal interface connections.
5.2.1 Wiring procedure
Install the interface wiring in separate conduit from the power wiring. The installation cable
should have double insulation and rated at Uo/U = 300/500 volts, 1.5 mm
2
minimum (e.g. MMJ
type or equivalent).
Note!
All building alarm inputs or remote features require an isolated normally open contact or
switch connected between the alarm input and common terminal as shown. All control
wiring and relay and switch contacts are customer provided.
5.2.2 To install TB1 wiring to connections:
1.
Be sure the UPS system is turned off and all power sources are removed.
2.
If not already open, unfasten front door latch and swing door open.
3.
Remove screws securing internal panel covering TB1 and TB2 terminal blocks at the top
of the UPS cabinet.
