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FX-350 Series Installation and Operation Manual
27
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
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.
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