
TWINFLEX
®
pro² Control Panel Engineering and Commissioning Manual
16
Fault Relay: C, N/C, N/O
The fault relay is derived from a single pole change over ‘volt-free’ relay contact which is not fault
monitored. The fault relay output is rated at 30V DC 1A max. Inductive loads should be diode protected
(eg. using a 1N4004 diode) to prevent back EMF causing damage to the relay contact.
The default setting for the fault relay causes the relay to operate as a
Common Fault
output where the
relay is de-energised in the fault condition and will remain so until the fault is cleared.
Fire Relay: C, N/C, N/O
The fire relay is derived from a single pole change over ‘volt-free’ relay contact which is not fault
monitored. The fire relay output is rated at 30V DC 1A max. Inductive loads should be diode protected
(eg. using a 1N4004 diode) to prevent back EMF causing damage to the relay contact.
The default setting for the fire relay causes the relay to operate as a
Common Fire
output where the
relay is energised in the fire condition and will remain so until the system is reset.
Mains Input Wiring
ON BOARD PCB
FIELD CONNECTIONS
COMMON
NORMALLY CLOSED
NORMALLY OPEN
ON BOARD PCB
FIELD CONNECTIONS
COMMON
NORMALLY CLOSED
NORMALLY OPEN
Neutral
Earth
Live
Fuse T4A Ceramic
www.acornfiresecurity.com
www.acornfiresecurity.com