GR-750x series
Control panel for addressable emergency
luminaires
Document number: 923750400_09_007
Date: 3/5/2022
Page: 24 of 71
[24]
3.5 Relays
There are 4 relays in total, 3 relays for different states of the panel and 1 programmable auxiliary relay. All
relays are rated 30Vdc, 5A max. External fuses must be added according to the connected circuit. The
terminal connections of each relay are described in the table below:
Table 9
– Relay terminal connections
RELAY
CONNECTED TERMINALS
Operation
C−NC:
While panel’s application is not operating.
C−NO:
While panel’s application is operating nominally.
Supply
C−NC:
While panel is powered from its batteries.
C−NO:
While panel is powered by mains power supply.
Fault
C−NC:
While there are one or more faults.
C−NO:
While there are no faults.
Auxiliary
C−NC:
While the user selected trigger is not active.
C−NO:
While the user selected trigger is active.
The auxiliary (
AUX
)
relay’s operation is configurable for a specific panel event and its logic can be either
positive or negative. The panel events that can be associated with the auxiliary relay are described at the
table below.
Table 10
– Relay trigger conditions
PANEL EVENT
DESCRIPTION
IN EMERGENCY
Triggered when one or more points are in emergency mode.
IN FAULT
Triggered when there are one or more faults.
ON TEST
Triggered when one or more points are in test.
IN INHIBIT MODE
Triggered when one or more points are in
inhibit mode
.