Specifications

FX-350 Series Installation and Operation Manual
21
Indicating (Powered Output) Circuits
Powered output circuits can be configured as signal, strobe or relay outputs. Powered output circuits are
supervised while they are not active for both open circuits and shorts. The circuit will not actually be activated if
there is a short trouble on the circuit. It will be activated if an open trouble is indicated. A circuit trouble activates the
common trouble sequence as a non-latching trouble. Since open circuit supervision does not operate while the
circuit is in alarm, if the circuit was in trouble before it was activated, it will still indicate trouble while active. The
trouble condition will be re-evaluated when supervision resumes.
Output circuits configured as strobes can have sync protocol for synchronization if configured. Certain strobe and
strobe/horns models of the following manufacturers are supported.
1. All normal non-sychronized horns
2. Faraday
3. System Sensor
4. Wheelock
5. Gentex (Secutron)
6. Mircom
When configured as normal, the output circuit is ON continuously when activated and does not use any sync
protocol. When configured as non-silenceable strobes, the strobes cannot be silenced, but the horn can be
silenced by pressing the 'signal silence' button
If the strobe is configured as silenceable strobe both the horn and the strobe are silenced (stopped) by pressing the
'signal silence' button
Indicating Circuit Wiring
The FX-350 Series Addressable Fire Alarm Panel supports Class B (Style Y) and Class A (Style Z) wiring for its
indicating circuits. Each circuit is supervised by a 3.9K End-of-Line resistor. Each indicating circuit provides up to
1.7Amperes, total 5Amperes of current maximum if no auxiliary power is used. Wire indicating circuits as in Figure
11 for Class B (Style y) or as in Figure 12 for Class A (Style Z).
Table 4: Indicating Circuit Wiring
Total
signal
load in
amperes
Maximum wiring run to last device
Max loop
resistance
in ohms
18 AWG 16 AWG 14 AWG 12 AWG
Feet Meters Feet Meters Feet Meters Feet Meters
0.06 2350 716 3750 1143 6000 1829 8500 2591 30
0.12 1180 360 1850 567 3000 915 4250 1296 15
0.3 470 143 750 229 1200 366 1900 579 6
0.6 235 71 375 114 600 183 850 259 3
0.9 156 47 250 76 400 122 570 174 2
1.2 118 36 185 56 300 91 425 129 1.5
1.5 94 29 150 46 240 73 343 105 1.2
1.7 78 24 125 38 200 61 285 87 1.0
Notes:
• For Class A wiring the resistance in ohms is multiplied by two.
• Maximum voltage drop should not exceed 1.8 volts.