Twinflex V3 Control Panel Engineering and Commissioning Manual
13
Repeater Inputs: EVAC, SIL, RST
These inputs require that a switched 0V trigger is applied in order for the relevant action to take
place as follows;
EVAC- Evacuate Input
On application of the 0V trigger input the sounders will operate, the control panel will show
‘Common Fire’ and ‘Remote Alarm Output’ indication, and the ‘Fire Relay’ and the ‘Remote Alarm
Output’ will change state. This will latch in place and the control panel must be reset to clear the
event.
SIL – Silence Input
On application of the 0V trigger input the alarm sounders will stop if they were operating.
RST - Reset Input
On application of the 0V trigger input the system will reset.
Fire Relay: NO, COM, NC
The fire relay provides a set of volt free single pole changeover contacts rated at 30V DC 1A. This
contact will change state when the control panel enters the fire state, and remain so until the
system is reset. All inductive loads should be diode protected (eg. using a 1N4004 diode) to
prevent back EMF. However, if this is not done, the load should be limited to 200mA to reduce the
likelihood of back EMF causing damage to the relay contacts.
Fault Relay: NO, COM, NC
The fault relay provides a set of volt free single pole changeover contacts rated at 30V DC 1A. This
contact will change state when the control panel enters the fault state, and remain so until the fault
condition is cleared. All inductive loads should be diode protected (eg. using a 1N4004 diode) to
prevent back EMF. However, if this is not done, the load should be limited to 200mA to reduce the
likelihood of back EMF causing damage to the relay contacts.
Conventional Sounder Circuit: BELL OUTPUT +/-
The conventional sounder circuit may be used to connect a standard sounders or strobe circuit.
This is monitored for short circuit and open circuit with a 4K7 ohm ‘End Of Line’ resistor and is
rated at 24V DC 500mA (Note: loads must be kept below 500mA to avoid blowing the fuse).
The alarm sounders operate when the control panel enters the fire state and deactivates when the
system is silenced. Nominal output voltage 21 – 32V.
Device circuits: ZONE 1/2/3/4 +/-
The Twinflex devices may be connected in radial circuits utilising the in built ‘End Of Line’ signal
within the last device. NB. Do not use a resistor or capacitor or any other 3rd party ‘End of line’
module for ‘End Of Line’ on the zones. Unused zones must be programmed off. See the
programming section for further details.
Fuses
Bell Fuse - Located on PCB adjacent Bell Output terminals ...................... F500mA (Quick Blow)
Battery Fuse – Located in line in the positive battery lead .......................... F3A (Quick Blow)
Mains Fuse – Located in the back box adjacent to the transformer ............ T315mA (Anti Surge)
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