User's Manual

Appendix L
Alarms System
Specification
Alarms System Specification
The three products, IDU-E-AL, IDU-C and PoE-8 have a dry contact
alarm relay through a 9 or 25 pin connector. There are two alarm
types – input and output.
1. Input alarm
The input alarms are raised by events from external equipment such as
a fire warning or an air conditioner failure.
2. Output alarm
Output alarms are generated by the external link, for example from a
sync loss, disconnection.
For each product, the table below sets out each possible input and
output alarm.