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INTERFACE WIRING INSTALLATION
NOTES AND TERMINAL LOCATIONS
111504B
DESCRIPTION:
DATE:
DRAWING NO: SHEET:
REVISION:
164201535---8
Installation Information
A-33
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
1. Use Class 1 wiring methods (as defined by the NEC) for interface wiring up to 30V. The
wire should be rated at 24V, 1A minimum.
2. Use Class 2 wiring methods (as defined by the NEC) for interface wiring from 30 to 600V.
3. When installing external interface wiring (e.g., building alarm, relay output, battery breaker
trip, and X---Slot) to the UPS interface terminals, conduit must be installed between each
device and the UPS cabinet. Install the interface wiring in separate conduit from the power
wiring.
4. When installing internal interface wiring to X---Slot terminals, route the wiring through the
internal opening in the X---Slot communication bay.
5. All building alarm inputs or remote features require an isolated normally-open contact or
switch (rated at 24 Vdc, 20 mA minimum) connected between the alarm input and
common terminal as shown. All control wiring and relay and switch contacts are customer
provided.
6. Regardless of assignment, alarms display as Building Alarm 1 and Building Alarm 2,
on the Control Panel Display Screen. Use twisted---pair wires for each alarm input and
common.
7. See Table T through Table Y and Chapters 3, 5, and 6 for customer interface wiring.
8. LAN and telephone drops for use with X---Slot connectivity cards must be provided by
facility planners or the customer.
Table T. TB1 and TB2 Interface Connections
Term i n al T B1 Name Description
1 Building Alarm 1
Pro
rammable UPS alarm.
ctivated b
aremotedr
contact
2 Building Alarm 2
.
closure. Building alarm 2 also used as backup control (Pull
3 Building Alarm Return
Chain) for parallel operation.
4 Alarm Relay NC
5 Alarm Relay Com
General purpose normally-open and normally-closed relay
6 Alarm Relay NO
con
ac
s.
7 External EPO NO
8 External EPO NC
Normally-open and normally-closed dry contacts used to
9 External EPO Com
ac
va
e
o
rom a remo
esw
c
.
10 Not Used
Term i n al T B2 Name Description
1 Not Used
2 Not Used
3 Battery Aux +
Contacts used to indicate whether UPS batter
breaker or
4 Battery Aux ---
disconnect is open or closed.
5 Battery UVR +
6 Battery UVR ---
ontacts use
to open
attery
rea
er or
sconnect.
7 On Bypass Relay
Normall
-o
en contact closes when UPS is on b
ass.
lso
8 On Bypass Relay Return
.
used for back up control (Pull Chain) for parallel operation.
9 On Inverter Aux
Normall
-closed contact o
ens when out
ut contactor
10 On Inverter Aux Return
closes.
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