Ice AP902, Инструкция по эксплуатации

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Instruction manual – AP902 Arc Protection Unit 17 (35
)
A1008B
5 S
YSTEM SELF
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SUPERVISION
AP902 includes an extensive self-supervision feature. Self-supervision includes both
internal functions and external connections. The self-supervision module monitors power
supply, HW and SW malfunctions and binary input connection and sensor problems.
Dipswitch settings are also supervised by comparing actual value with stored Non-volatile
memory data (see chapter 3.3.1 Auto configuration (system setup))
In a healthy condition the power LED is on and the System Failure (SF) relay is energized.
If the self-supervision function detects a faulty condition or the power supply fails the self-
supervision relay is released and the ERROR LED is lit.
If a fiber sensor failure occurs, the unit will go into ERROR mode. The error LED will turn
on, the SF relay will release and the corresponding faulty fiber sensor channel LED will
start blinking. In this situation the unit is still in protection mode, but with the faulty fiber
sensor channel blocked. If the error is resolved the unit will automatically clear the SF-
status. This means that SF relay will energize and the error led will turn off. If one or more
of the sensors are disconnected the healthy sensors remain in use and unit remains
operational accordingly. The AP902 will remain in error mode until the disconnected
sensors are repaired.
If a dip switch setting is changed after the auto-configuration function (see chapter 3.3.1
Auto configuration) has been executed, the unit will go into SF-alarm mode. The
configured (stored) setting is however still valid and the unit is still operational.