Руководство По Установке для Cisco Cisco Packet Data Gateway (PDG)
SSC Alarm Cabling
CO Alarm Wiring Example ▀
ASR 5500 Installation Guide ▄
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CO Alarm Wiring Example
The figure below depicts how the three dry-contact (no voltage supplied) relay contacts can each control up to two
alarming devices. In this example the SSC CO alarm interface is connected to a CO Alarm Panel, where green LEDs are
wired to indicate normal operation, and red LEDs are wired to indicate alarm conditions.
alarming devices. In this example the SSC CO alarm interface is connected to a CO Alarm Panel, where green LEDs are
wired to indicate normal operation, and red LEDs are wired to indicate alarm conditions.
With all relays de-energized, the green LEDs are illuminated. If an alarm relay is energized, its NO (normally open)
contact closes; the green LED is extinguished and the red LED is illuminated.
contact closes; the green LED is extinguished and the red LED is illuminated.
Figure 21. CO Alarm Interface Schematic