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17
No restriction for types of alarm input
The alarm input can be Normally Opened or Normally Closed.
2.4.2.1 Alarm Input Port Introduction
Describes the function of alarm input ports.
Alarm Input Ports
Table 2-6 Alarm input ports description
Name Description
Alarm Input Port Alarm Input Port 1–3, local alarm input port
2.4.2.2 Alarm Input Port Description
Both NO and NC are supported.
The GND of alarm detector is in parallel connection with COM (the power supply of alarm detector
should be from external power source). See Figure 2-17.
The GND of alarm detector is in parallel connection with GND of device.
Connect the NC port of alarm detector to the alarm input port (ALARM).
When supplying power from external power source to the alarm device, the alarm device should
be common-grounded with the device.
NC alarm input
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