Fire-Lite ECC-50 - Appendix B: Wiring Requirements

98 Emergency Command Center Manual — P/N LS10001-000FL-E:D 9/3/2014
Appendix B: Wiring Requirements
Connecting external system accessories to the ECC-50/100 main circuits must be carefully consid-
ered to ensure proper operation. It is important to use the correct type of wire, wire gauge and wire
run length per each circuit. Refer to the following table to specify wire requirements and limita-
tions.
NOTE: If an SLC loop is to be run in conduit with ECC-50/100 Notification Appliance Circuits, the
risk of encountering problems can be greatly reduced by using twisted, shielded cable on the SLC
and NACs.
Circuit Type Wire Type & Limitations Maximum Distance (feet)
Wire Gauge
(terminals support)
CMD1-CMD2
TB4, TB5: polarity reversal
untwisted/unshielded,
twisted/shielded, see note
1
depends on trigger circuit,
9-32 VDC, 1.6 mA
12-18 AWG
CMD1-CMD2
TB4, TB5: contact closure
untwisted/unshielded,
twisted/shielded, see note
1
max loop impedance 200 ohms 12-18 AWG
CMD3-CMD8
TB6-TB8: contact closure
untwisted/unshielded,
twisted/shielded, see note
1
max loop impedance 200 ohms 12-18 AWG
speaker circuits
TB20, TB21
untwisted/unshielded,
twisted/shielded, see note
2
determine using Lite-Calcs utility
see note
3
12-18 AWG
ECC-CE6 speaker circuits
TB1 - TB6
untwisted/unshielded,
twisted/shielded, see note
2
determine using Lite-Calcs utility
see note
3
12-18 AWG
external data bus: TB12 twisted/shielded max loop impedance 13.2 ohms 12-18 AWG
external audio riser: TB22 twisted/shielded max loop impedance 13.2 ohms 12-18 AWG
external operator interface power:
TB24
untwisted/unshielded,
twisted/unshielded
max loop impedance 13.2 ohms 12-18 AWG
NAC output: TB19 untwisted/unshielded,
twisted/unshielded
refer to Section 2.6.3 , max loop
impedance 120 ohms
12-18 AWG
speaker volume control override:
TB23
untwisted/unshielded,
twisted/unshielded
max loop impedance 120 ohms 12-18 AWG
night ring input: TB16 untwisted/unshielded,
twisted/unshielded
max impedance 30 K ohms 12-18 AWG
external audio input
TB5 (on display board)
twisted/shielded max loop impedance 100 ohms 12-18 AWG
MNS active, AC loss, and trouble
output relays: TB1 - TB3
untwisted/unshielded,
twisted/shielded, see note
1
depends on the panel monitoring
these outputs
12-18 AWG
auxiliary power: TB17 untwisted/unshielded, see note
1
distance set by 4 VDC max line
drop
12-18 AWG
Table B.1 Wiring Requirements
1 Refer to NEC Standards.
2 Twisted, shielded wire is recommended for maximum protection against EMI and AFI emissions and
susceptibility.
3 Must also meet NFPA 72 Standards for minimum and maximum sound levels.
NOTE: Wire to wire short circuit trouble = zero ohms.
Open circuit trouble = infinite ohms.
Ground fault trouble = zero ohms to ground.