6 System self-supervision
All AQ-101 and AQ-102 variants (that is, both LV and MV) have an extensive self-supervision feature,
including both internal functions and external connections. The self-supervision module monitors the
power supply, hardware and software malfunctions, as well as problems with the binary input
connection(s) and sensor(s). Additionally, the module supervises the DIP switch settings by comparing
actual values with the data stored in the non-volatile memory.
When the unit's condition is healthy, the "Power" LED is lit and the system failure (SF) relay is energized.
If the self-supervision function detects a faulty condition or if the power supply fails, the SF relay is
released and the "Error" LED becomes lit.
If a sensor failure occurs, the unit will go into Error mode. The "Error" LED turns on, the SF relay
releases, and the LED of the corresponding faulty sensor channel starts blinking. In this situation the
unit is still in the protection mode, although the faulty sensor channel is blocked. If the error is resolved,
the unit automatically clears the system failure status, energizing the SF relay and turning off the "Error"
LED. If one or more of the sensors are disconnected, the healthy sensors remain in use and the unit
remains operational accordingly. However, the unit remains in Error mode until the disconnected
sensors are repaired.
The unit goes into SF alarm mode, if a DIP switch setting is changed after the system setup procedure
has been performed. However, the configured (stored) settings are still valid and the unit is still
operational.
A
AQ
Q-101 (A
-101 (AQ
Q-101D
-101D))
Instruction manual
Version: 2.01
© Arcteq Relays Ltd
IM00006
25
Содержание AQ 102
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