Product description
QS4 Technical Reference Manual 1.5
Circuit descriptions
PS6 Power Supply Card
1. Relay 1 (Common Alarm)
Style: Form C
Contact rating: 1 A @ 20.4 – 26.4 Vdc (0.6 PF)
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Nonsupervised and power-limited only when
connected to a power-limited source
2. Relay 2 (Common Supervisory)
Style: Normally-open
Contact rating: 1 A @ 20.4 – 26.4 Vdc (0.6 PF)
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Nonsupervised and power-limited only when
connected to a power-limited source
3. Relay 3 (Common Trouble)
Style: Normally-open, held closed
Contact rating: 1 A @ 20.4 – 26.4 Vdc (0.6 PF)
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Nonsupervised and power-limited only when
connected to a power-limited source
4. Relay 4 (Programmable)
Style: Normally-open
Contact rating: 1 A @ 20.4 – 26.4 Vdc (0.6 PF)
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Nonsupervised and power-limited only when
connected to a power-limited source
5. Smoke/Accessory Power
Output: Continuous or interruptible via jumper
selection
Voltage: 24 Vdc, regulated
Current: 250 mA
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Supervised and power-limited
71
2
6
9
8
534
6. RS485
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Wire type: Twisted pair, six twists per foot
minimum
Circuit capacitance: 0.4 µF
Circuit resistance: 100 Ω
Supervised and power-limited
8. AUX Power #1, #2, and #3
Voltage: 17.5 – 26.4 Vdc FWR (full wave
rectified)
Current: 1.5 A each
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Power-limited and supervised for short circuit
conditions only
7. RS232
Wire size: 18 to 12 AWG (0.75 to 2.5 mm²)
Nonsupervised and power-limited
Wire length: 20 ft maximimum
9. Battery Circuit
Charge current: 2 A
Charge capacity: 40 Ah (UL), 30 Ah (ULC)
Supervised and nonpower-limited
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