Compur Monitors Statox 503, Руководство пользователя

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Statox 503 Control Module
Page
40
of
46
Issue 10 / 2018
IO signal status:

0 mA system failure

2 mA service mode

4 mA measured value is zero

20 mA measured value is 100 % scale

22 mA signalises overrange
Safety Function 2 (SF2)
The Statox 503 Control Module monitors the analog 4 – 20 mA signal and detects exceedings of the
programmable alarm thresholds with the relays A1 and A2. It is also the power supply of the sensor head.
A third relay, SF which is always passive, alarms in case of system failure.
Safety Function 3 (SF3)
The Statox 503 Control Module measures the bridge voltage of a catalytic sensor (HRC or ARE), converts it
into a standard 0 – 22 mA signal which is accessible at the current output. It also supplies the bridge supply
voltage of the catalytic sensor. A relay, SF which is always passive, alarms in case of system failure.
IO signal status

0 mA system failure

2 mA service mode

4 mA measured value is zero

20 mA measured value is 100 % scale

22 mA signalises overrange
Safety Function 4 (SF4)
The Statox 503 Control Module monitors the bridge signal of the sensor heads ARE or HRC and detects
exceedings of the programmable alarm thresholds with the relays A1 and A2. It is also the power supply of
the sensor head. A third relay, SF which is always passive, alarms in case of system failure.
Diagnostic Time and Measuring Cycle
The maximum time internal failure diagnosis is 24 h. The analog current output and the display are updated
every 500 ms.