UTC Fire and Security Kidde AirSense SynaG Series, Installation Manual

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Chapter 5: Technical specifications
SynaG Series Installation Manual 69
Open circuit reference range
Zone
impedance
Zone device current consumption
> 8 k
Ω

2.6 mA
[1] Mixed zones are not allowed on installations requiring EN 54-13 compliance or intrinsically-
safe zones
Table 32: Automatic and manual zone specifications
Standard /
BS 5839-1
EN 54-13 Intrinsically safe
[1]
Resistance per zone circuit 55 Ω max. 50 Ω max. 55 Ω max.
Capacitance per zone circuit 500 nF max. 500 nF max. 500 nF max.
Nominal alarm impedance 100 to 680 Ω

5% 100 to 520 Ω

5% 250 to 560 Ω

5%
Alarm reference range
Zone
voltage
Zone impedance
3 to 14 V
75 to 680
Ω
3.1 to 16.9 V
90 to 900
Ω
12.8 to 17 V
160 to 900
Ω
Short circuit reference range
Zone
voltage
Zone impedance
< 3 V
< 55
Ω
< 3.1V
< 50
Ω
< 11.9 V
< 80
Ω
Open circuit reference range
Zone
impedance
Zone device current draw
Zone voltage
> 8 k
Ω

2.6 mA
20.6 to 23.5 V
N/A
N/A
19.2 to 23.5 V
> 11 k
Ω
< 1.81 mA
> 21.3 V
High impedance fault N/A 16.9 to 17.2 V N/A
[1] Values are referenced to the IS zone input terminals
Input and output specifications
Table 33: Unsupervised inputs
Cable resistance
Activation input value
Deactivation input value

9k Ω ±10%
> 9k Ω ±10%
Input type Unsupervised, activated with a passive
impedance (usually a relay contact)
Sourced current 1 mA max. (for activation with short circuit
contact)
Voltage between terminals 28 V max. (for deactivation with open circuit)