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Programming Options
Class A Wiring
NAC circuits (all outputs) and aux power circuits (outputs 1 and 2) can be converted to Class A wiring using the ZNAC-PS option card. Set-
ting DIP switch position 7=ON when a selected output circuit is configured for Class A wiring. The default setting is OFF for Class B wir-
ing.
Maximum Number of Strobes for Synchronization
The total current draw for each Notification Appliance Circuit cannot exceed 3.0 amps special application, 1A (6 amp model) or 1.5A (10
amp model) regulated. Refer to the manufacturer's documentation supplied with the strobe to determine the maximum current draw for each
strobe and ensure that the circuit maximum is not exceeded.
To ensure proper strobe and circuit operation, there is also a limit to the number of strobes that can be attached to each circuit. Following is a
table of the strobes that have been tested with the power supply and the maximum number that can be connected to each NAC when using
the lowest candela settings. Make sure that the NAC maximum current is not exceeded:
30
Manufacturer
max. number of strobes
System Sensor
Gentex
Wheelock
Amseco/Potter
Table 3.16 Maximum Number of Strobes
1
These values are for strobe-only devices at the minimum
candela setting. Values will be different for strobe/horn and
horn-only devices. Refer to the manufacturer's installation
documents for values on these devices.
SK-PS Series Instruction Manual — P/N LS10227-002SK-E:C 2/2/2022
Output Circuit Control DIP Switch Settings
1
69
42
50
34
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