Potter PFC-6075R - Manual (Page 30)

3-24
PFC-6075R • 5403594 • REV D • 9/14
Notification Appliance Circuits Installation
There are two (2) NAC circuits provided on the PFC-6075R rated as continuous 3 amps at 24 VDC. The NAC circuits may be
configured for Class A or Class B. (Please refer to the Class A and B wiring examples located in this section.)
NAC Wiring
y y Outputs are supervised and regulated.
y y Circuits are power limited.
y y Type of NAC output is selectable, and may be configured for strobe synchronization with Potter/AMSECO, Cooper
Wheelock®, Gentex®, or System Sensor® strobe devices. Refer to the listing of compatible models located in the
“NAC Compatibility Document”, Potter #5403592, for this information.
y y The CA-6075 Class-A Expander may be programmed to allow for operation of the NACs. The expander adheres to the
same circuit rating, supervision and regulation as other circuits.
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 Notification Appliances) x (Wire Resistance) < 3 Volts
NAC Wiring Configurations
Examples of Class B and Class A Wiring follow.
Figure 24. NAC Class B Wiring Example
NAC 1 NAC 2
- + - +
5.1k EOL
Potter Part #3005013
Notification
Appliance
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 circuits. The impedance to ground for ground fault detection is 0 ohms.
DWG #602-4A