Twinflex V3 Control Panel Engineering and Commissioning Manual
15
Device circuits: ZONE 1/2/3/4/5/6/7/8 +/-
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.
Remote Alarm Output: Remote Fire O/P +/-
The remote alarm output may be used to connect a standard 24V DC conventional relay. This is
monitored for short circuit and open circuit with a 4K7 ohm ‘End Of Line’ resistor and is rated at
24V DC 800mA. The relay operates when the control panels enters the fire state and deactivates
when the system is reset. Any relays must be dioded. See the section on relays for further
information.
Conventional Sounder Circuit: SOUNDER +/-
The conventional sounder circuit may be used to connect a standard sounder 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 800mA. The alarm sounders operate when the control panel enters the fire state and
deactivates when the system is silenced
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.
Remote Alarm input: Alarm I/P / Class Change
The Remote alarm input is a non-latching input suitable for interfacing to other fire panels. Simply
apply auxiliary 0V to this terminal and its chosen function will operate as follows;
Mode 1 – Timed Class Change
On application of a 0V trigger, the sounders will operate for 10 seconds, but the control panel will
show no indication, and neither the ‘Fire Relay’ nor the ‘Remote Alarm Output’ will operate.
Mode 2 – Remote Alarm excluding ‘Remote Alarm Output’
On application of a 0V trigger, the sounders will operate, the control panel will show ‘Common Fire’
and ‘Remote Alarm Input’ indication, the ‘Fire Relay’ will change state, but the ‘Remote Alarm
Output’ will not operate. This will reset when the trigger condition is removed.
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