Smart Connect Multi-loop Installation Manual
www.zetaalarmsystems.com
24
Typical Wiring Diagram (Auxiliary 24VDC)
Wiring recommendations for Alarm Circuits
(SCM-ACM)
The SCM-ACM circuits are rated for 500mA each. The table shows the maximum wire run in metres for different wire gauges and alarm
loads.
Wire Gauge
125mA Load
250mA Load
500mA Load
18 AWG
765 m
510 m
340 m
16 AWG
1530 m
1020 m
680 m
14 AWG
1869 m
1246 m
831 m
SCM-ACM Specifications
Alarm Circuit Module (SCM-ACM)
Circuit Voltage
29VDC Nominal (19V
–
29V)
Circuit Type
Regulated 24V DC. Power limited & Supervised.
Maximum Alarm Circuit Current
2 x 500mA
Maximum Aux 24V Current
2 x 400mA
Maximum RMS current for a single sounder device
350mA
Maximum Line Impedance
3.6Ω total (1.8Ω per core)
Wiring Class
2 x Class B [Power limited & Supervised]
End of Line Resistor
4K7Ω
Recommended cable sizes
18 AWG to 14 AWG (0.8mm
2
to 2.5mm
2
)
Special Applications
24V auxiliary voltage output
NOTE:
When an alarm circuit is configured as a 24v aux output, the
“24V On”
LED on the front of the module will be ON.
NOTE:
This wiring diagram demonstrates the option to
program one or more SCM-ACM outputs to become a
regulated constant 24VDC output.
RECOMMENDED CABLE:
Cable should be BS approved FPL, FPLR, FPLP or equivalent.
