TWINFLEX
®
SRP Control Panel Engineering and Commissioning Manual
20
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 maximum contact current rating is 2A @ 24V DC. Inductive loads should be diode
protected 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.
Programmable Relays 1-4: C, N/C, N/O
The relays are derived from a single
pole change over ‘volt-free’ relay contact which is not fault
monitored. The maximum contact current rating is 2A @ 24V DC. Inductive loads should be diode
protected to prevent back EMF causing damage to the relay contact.
Programmable relays can be configured to activate during the following system-level states:
OUTPUT STATE
No State
Manual
Fault
Disablement
Hold
Extract
Release
Pre-Release
Alarm
Note:
Programmable relays set to activate on release must not be used to drive releasing devices. The
circuits connected to these relays are not monitored and will not follow the releasing alarm pattern.
When releasing outputs are disabled, Programmable Relays that are set as releasing are also disabled
but are not logged in the event log as being disabled.
ON BOARD PCB
FIELD CONNECT IONS
NORMALLY CLOSED
NORMALLY OPEN
COMMON
ON BOARD PCB
FIELD CONNECT IONS
NORMALLY CLOSED
NORMALLY OPEN
COMMON