Potter PFC-6006 - Notification Appliance Circuits Installation; NAC Maximum Wiring Impedance Formula

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PFC-6006 • 5403559 • REV D • 11/17
Notication Appliance Circuits Installation
There is one (1) NAC circuit provided on the PFC-6006 rated as continuous 0.5 amps at 24 VDC. The NAC circuit is congurable
as Class B, Style Y only. (Please refer to the wiring example located in this section.)
NAC Wiring Characteristics
y Output is supervised and regulated.
y Circuit is power limited.
y Normal standby supervisory current is approximately 1.2 mA
y Low current trouble activation is 0.8 mA; High current trouble activation is 1.7 mA.
y Maximum RMS current is .5A.
Note: Type of NAC output is selectable, and may be congured for strobe synchronization with Potter/AMSECO®, Cooper
Wheelock®, Gentex®, or System Sensor® strobe points. Refer to the listing of compatible models located in the “NAC
Compatibility Document”, Potter #5403592, for this information.
NAC Maximum Wiring Impedance Formula
The maximum impedance is a function of the load placed on the circuit. To calculate the maximum line current impedance, use
the following formula:
(Alarm Current of Notication Appliance) x (Wire Resistance) < 1.2 Volts
NAC Wiring Conguration
Figure 9. NAC Class B, Style Y Wiring Example
Notes:
1. The Potter part number for the listed end of line assembly is #3005013 EOL Resistor Assembly.
2. The panel has ground fault detection on the NAC circuit. The impedance to ground for ground fault detection is 0 ohms.
3. The 1.2 Volts is based on the worst case loading at the remote end of the NAC circuit (lump sum method). The total drop
of 1.2 Volts should be measured from the terminals to the most remote device.
DWG #559-6A
NAC
- +
Notification Appliances
5.1k EOL
Potter Part # 3005013
Note: the resistance of external wiring shall be determined using the following formula ---
(Alarm Current of Notification Appliance) x (Wire Resistance) < 1.2 Volts