Constant Supervision NAC (CSNAC) Wiring
See note 1
See note 2
See note 3. See note 3.
See note 4. See note 4.
Figure 9: CSNAC Wiring
Note:
1. 4081-9008
2. 4081-9018
3. 4100-1259
4. 4100-1260
Note:
• Leave the 10 K resistors on the "B+" and "B-" terminals of unused circuits.
• Remove the 10 K resistors from the "B+" and "B-" terminals on the card that hosts the CSNAC (amplifiers and XSIG cards).
• All wiring is between 18 AWG (0.8231 mm
2
) (minimum) to 12 AWG (3.309 mm
2
) (maximum).
• Field wiring is power-limited.
• The maximum speaker circuit current is 2 A per circuit.
• The total available alarm power is 100 W (4 A @ 25 VRMS, 1.414 A @ 70.7 VRMS) or as limited by the connected amplifier.
• Shields, when required, are normally connected as shown. Alternate shield termination using earth ground is provided on the amplifier chassis.
• Signal wiring must test free of grounds.
• 70V CSNAC circuits require Unshielded Twisted Pair (UTP) cable.
• The maximum combined capacitance of all CSNAC speaker circuit wiring to each amplifier:
- 100W 25V: 1.3uF
- 100W 70V: 0.15uF
• Consult your local Simplex Office if installing a 70V CSNAC system with more than 6000ft of total wire to any single amplifier. Additional
equipment may be needed.
• For guidance regarding proper wiring practice when using TrueAlert ES speaker appliances, refer to the Speaker Wiring Application Guidelines
in the ES-PS IDNAC Card Installation Instructions, 579-1289.
page 12 579-174 Rev. Q
Digital/Analog Amplifiers Installation Instructions
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