Siterwell GS690, Инструкция по установке и обслуживанию

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Document NO.: RD-690-39-001 Version: A Date
：
2017.12.30
2.5.3
Non-addressable Audio Alarm Devices
Two alarm output circuits (NAC1 and NAC2) are provided for non-addressable audio alarm devices, including bells.
These should not be confused with addressable audio/visual alarms, which are connected directly to, and powered
from the addressable loop.
The maximum combined output current is 220 mA. All audio alarm devices must be voltage polarity sensitive.
Non-polarized alarm devices will indicate a Fault Condition. The alarm zone circuits are protected against short-circuit.
An electronic fuse will reset when the short circuit is removed and the control panel is reset.
The audio/visual alarm device circuits are monitored for open-and short-circuit conditions. If no devices are installed, a
10k
Ω
resistor (P/N: Reol) should be fitted to the NAC1 and NAC2 terminals to prevent a Fault condition Being
Reported by the control and indicating equipment.
Figure
– 4
The total current should not exceed the power rating of the control and indicating equipment. Refer to the
Technical Specifications.
2.5.4
Auxiliary Fire Relay Outputs
Two voltage-free change-over relay outputs are activated in the Alarm Condition (unless specifically disabled). The
outputs are labeled RLY1 and RLY2. The outputs are not supervised.
Figure
– 5
2.5.5
Fault Relay Output
A single auxiliary voltage-free normally-closed fault output relay is provided. The relay is normally energized and opens
in the Fault Condition. The output is not supervised.
Figure
– 6