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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
Terminal TB1
1
Building Alarm 1
2
Building Alarm 2
3
Building Alarm Return
4
5
Alarm Relay Com
6
7
External EPO NO
8
External EPO NC
9
External EPO Com
10
Terminal TB2
1
2
3
4
5
6
7
On Bypass Relay
8
On Bypass Relay Return
9
10
On Inverter Aux Return
Powerware
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
®
Name
Programmable UPS alarm. Activated by a remote dry contact
Programmable UPS alarm. Activated by a remote dry contact
closure. Building alarm 2 also used as backup control (Pull
c osu e
Chain) for parallel operation.
Alarm Relay NC
General purpose normally-open and normally-closed relay
General purpose normally open and normally closed relay
contacts.
contacts
Alarm Relay NO
Normally open and normally closed dry contacts used to
Normally-open and normally-closed dry contacts used to
activate EPO of UPS from a remote switch
activate EPO of UPS from a remote switch.
Not Used
Name
Not Used
Not Used
Battery Aux +
Contacts used to indicate whether UPS battery breaker or
Contacts used to indicate whether UPS battery breaker or
Battery Aux ---
disconnect is open or closed.
Battery UVR +
Contacts used to open battery breaker or disconnect.
Contacts used to open battery breaker or disconnect
Battery UVR ---
Normally open contact closes when UPS is on bypass. Also
Normally-open contact closes when UPS is on bypass. Also
used for back up control (Pull Chain) for parallel operation.
On Inverter Aux
Normally closed contact opens when output contactor
Normally-closed contact opens when output contactor
closes.
Description
u d g a a
a so used as bac up co t o ( u
Description
DESCRIPTION:
INTERFACE WIRING INSTALLATION
NOTES AND TERMINAL LOCATIONS
DRAWING NO:
164201535---8
REVISION:
B
Installation Information
SHEET:
1 of 12
DATE:
111504
A-33
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