5.6.2 Battery breaker wiring interface
When using the original accessory battery cabinet from the manufacturer, the
battery breaker interface wiring is provided with the cabinet. Connecting it
requires only routing the wires from the cabinet to terminal TB20 (and TB21). In
15/20 kW frame the connector for the battery circuit breaker monitoring signal
and battery circuit breaker trip signal is on the left side of the power cabling.
When using a third-party battery system, the breaker must be equipped with
auxiliary signal and should have a 24 V shunt trip for remote opening of the
breaker, when needed.
Wire entry for the battery breaker signal wiring is located in the middle of the UPS
cabinet. Punch holes are located on the left or right side panel, back wall or
bottom plate.
See Section 5.3.1 Battery trip wiring for installation instructions.
5.6.3 Relay output interface connections
The general alarm relay is a dry relay signal output. The relay can be used for
informing the operators about UPS alarm conditions, for example through a
building management system. By default, the relay is configured to activate when
the UPS general alarm is active, that is, any event when the ALARM status is
active. The relay can also be configured to activate by some other event, but this
needs to be done by authorized service personnel. The relay rating is 30 V AC or
DC, 5 A.
Relay signal wiring can be installed only through the signal cabling canal, from
back to front, in the top section of the UPS.
Additional relay outputs are available with mini-slot cards. Relay outputs can be
configured to be activated by various events. Configuration can be done by an
authorized Eaton Customer Service Engineer or by other qualified service
personnel authorized by Eaton.
5.6.4 Industrial Relay Card interface connections
Relays K1 through K5 are identical in function. Each output contact function can
be assigned by the user. The UPS information may also be configurable.
To install the INDRELAY-MS:
1. Make sure that the ancillary equipment system is turned off and all the power
sources are removed. Refer to the appropriate operation manual of any
ancillary equipment for shutdown instructions.
2. Install wiring from the IRC to the monitoring equipment using appropriate
conduits through the cable exit opening in the IRC.
3. Connect wiring between the IRC terminal blocks and the monitoring
equipment using terminations. Connect one wire to COM (Common) and
another to either NC or NO to select the Normally Open or Normally Closed
option.
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 68 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
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