NFS2-640/E Installation Manual —
P/N 52741:P2 7/10/14
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Electrical Specifications
Electrical Specifications
Notification Appliance Circuits & Releasing Circuits
Output Relays
Output relays for Alarm and Trouble are common on TB4; Supervisory and Security are
programmable on TB5. See Figure 3.21, “Form-C Relay Connections” on page 38).
Contact ratings: 2.0 A @ 30 VDC (resistive)
Four-wire Smoke Detector Power
Control Panel terminals TB10 RESET (+) and (–) supply filtered, low-noise power for four-wire
smoke detectors. Specifications are:
•
Nominal voltage: 24 VDC special applications.
•
Maximum rated current: 1.25 A DC
•
Maximum ripple voltage: 176 mVrms
•
TB10, TB2, and all 4 NACs share a maximum of 3.0 A in standby and 6.0 A in alarm.
Refer to the
Device Compatibility Document
for compatible 24 VDC detectors.
Power Output
Control Panel terminals TB10 NONRESET (+) and (–) supply one (1) power-limited circuit
available to power external devices, such as notification appliances and annunciators.
•
Nominal voltage: 24 VDC regulated, special applications, 1.5 A max.
•
Maximum rated current: 1.25 A DC
•
Maximum ripple voltage: 176 mVrms
•
TB10, TB2, and all 4 NACs share a maximum of 3.0 A in standby and 6.0 A in alarm.
Refer to the
Device Compatibility Document
for compatible devices and notification appliances.
Operating Power: AC Branch Circuit
The control panel requires connection to a separate dedicated AC branch circuit. Follow these
guidelines when connecting the AC branch circuit:
•
Label the branch circuit “Fire Alarm”. This must be a separate dedicated AC fire alarm circuit.
Item
Value
Max. wiring voltage drop
2 VDC
(Retrofit note: SLCs with old CMX modules are restricted to 1.2 VDC.)
NAC Nominal operating
voltage
24 VDC regulated, 1.5 A max.
Special Applications for
Releasing Circuits
20.16 - 26.42 VDC
Current for all external
devices connected to the
control panel’s power supply
6.0 A in alarm (3 A continuous)
TB2, TB10 and all 4 NACs share a maximum of 3.0 A in standby and 6.0 in
alarm.
Optional ACPS-2406
Total 6 A in alarm (5 A continuous)
Optional ACPS-610
Total 6 A in alarm (1.5 A single output)
Optional APS-6R
Total 6 A in alarm (4 A continuous)
End-of-Line Resistors
(ELRs)
Control Panel NACs (TB6, TB7, TB8, TB9): 2.2K, 1/2 watt
XP6-C, FCM-1 Modules: 47K, 1/2 watt
NOTE: For a list of compatible Notification Appliance Circuits and Releasing Circuits see Notifier Device
Compatibility Document 15378.
NOTE:
The Control Panel provides a total of 7.4 A of power in alarm (4.4 A in standby), shared
by all internal circuitry and external provisions (24 V resettable and non-resettable). TB10 and all
4 NACs share a maximum of 3.0 A in standby and 6.0 A in alarm. For power requirements, refer
to the power supply calculation tables in Appendix A.
