Mircom FX-350 Series User Manual

33
Field Wiring
When a Class A loop is opened there may be a few missing devices reported by the panel
which will be restored once the panel has established the Class A connection.
8.4 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. 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.
• All normal non-sychronized horns
• Faraday
• System Sensor
• Wheelock
• Gentex
• 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
8.5 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 1.7 Amperes, total 5 Amperes 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).
Note: When there is an "Open loop trouble" look for both open and shorts on the loop.
As a guide line the isolators which are activated in response to a short will have
their LED ON; look for the short between the two isolators with their LEDs ON.
Table 4 Maximum Wiring Distances
TOTAL
SIGNAL
LOAD
MAXIMUM WIRING RUN TO LAST DEVICE (ELR) MAX. LOOP
RESISTANCE
18AWG 16AWG 14AWG 12AWG
Amperes ftmftmftmftm Ohms
0.06 2350 716 3750 1143 6000 1829 9500 2895 30
0.12 1180 360 1850 567 3000 915 4720 1438 15
0.30 470 143 750 229 1200 366 1900 579 6
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Mircom FX-350 Series Specifications

General

Brand	Mircom
Model	FX-350 Series
Category	Fire Alarms
Language	English