Uninterruptible Power Supplies Minipower Plus Rack, User Manual

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7: Options
7-8
UPS453-01-00 MINIpowerPLUS User Manual Dated 08-03-12
7.3.1 Relay Interface Board
The Relay Interface Board provides volt-free
alarm and status outputs that can be connected
to a remote panel.
The board is contained in an ABS box which is
fitted to the UPS back panel and connected to the
9-pin D-type connector on the back of the UPS by
means of the supplied 0.6m ribbon cable.
The box cover is held in place by moulded clips
and can be easily removed to provide access to
the output terminal connectors.
Three relays are contained on the Interface Board
which operate under the following conditions (see
also paragraph 3.3.2).
1. UPS on Mains / Battery
2. General UPS fault detected
3. Low battery. UPS has been operating on
battery power and remaining autonomy time
is low.
All relay contacts are rated at 150Vdc / 125Vac
and 1A.
Figure 7.8 Relay Interface Board
Figure 7.7 Relay Board Assembly
EC2 On Mains / On Battery
EC3 General Alarm
EC4 Low Battery (Autonomy Reserve)
UPS D-type connector
Relays are rated at 150Vdc/ 125Vac/ 1Amp
C = Common contact
NO = Normally Open
NC = Normally Closed
When jumpers J1,J2,J3 are inserted the
Alarm and Low Battery warnings are joined.