Wire Requirements - Honeywell MS-5UD Series Manual

Wire Requirements

APPENDIX D
Connecting external system accessories to the main circuits must be carefully considered to ensure
proper operation. It is important to use the correct type of wire, gauge and run length for each
circuit. Reference the chart below to specify wire requirements and limitations for each circuit.
CIRCUIT CONNECTIONS
Circuit Type Circuit Function
Initiating Device Connects to
Circuit Initiating Devices
(power-limited)
ANN-BUS Communication
(EIA-485) for ANN-BUS
power-limited annunciator and
relay modules
ANN-BUS Power for
Power ANN-BUS
annunciators
24 VDC Power for
Regulated, accessories and
resettable, 4-wire devices
nonresettable
Auxiliary Open Collector
Trouble Input trouble input for
CHG-75,
CHG-120F, etc.
Remote Sync Provides strobe
Output and normal sync
for remote NAC
power supplies
NAC Outputs Connects to NAC
devices or Release
devices
150
Wire Requirements
Table D.1 FACP Wire Specifications
Wire Type and Limitations
Untwisted, unshielded wire
(maximum loop resistance
not to exceed 100 ohms)
Twisted pair a maximum
loop resistance of 120 ohms
Refer to "ANN-BUS Devices" on page 38 for information on device wiring
Untwisted, unshielded wire
Single conductor
Untwisted, unshielded pair
wire
Untwisted, unshielded pair
wire
WIRE REQUIREMENTS
Recommended
Max. Distance
Feet (meters)
Distance limitation
12-18 AWG (3.25 - 0.75 mm
set by 100 ohm
resistance limitation
6,000 (1,800 m)
12-18 AWG (3.25 - 0.75 mm
Distance limitation
12-18 AWG (3.25 - 0.75 mm
set by 4 volt
maximum line drop
Distance limitation
18 AWG (0.75 mm
20 feet in same
room
Distance set by 295
12-18 AWG (3.25 - 0.75 mm
ohm resistance
limitation
Refer to Section D.1 and Section D.2 on page 151.
MS-5UD/MS-10UD Series PN 52626:B 8/01/2008
Wire Gauge
2
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2
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2
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