Atest Gaz PW-033-A, User Manual

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Sigma MOD DO front panel includes:
1. device status area,
2. status area for digital inputs DI,
3. status area for gas detectors (Sigma MOD LED) or relay outputs (Sigma MOD DO),
4. status area for the data transmission system (Sigma BUS),
5. keypad area.
All these areas as described with details in subsequent sections.
3.1.1 Device status area
Indicator Status / colour Information
OK / green Indicator is constantly on – correct operation of the device
/ green Blinks at equal intervals _
∏_∏_∏_∏_
– incomplete unit configuration (default
settings operation). Contact the manufacturer
/ green Simple blink (every 2 s)
_∏________
– device is in configuration mode
FAILURE / yellow Indicator is constantly on – a critical defect of the device, contact the manufacturer
/ yellow Alternate blinking
_∏_∏_∏_∏_
– a non-critical defect of the device, contact the
manufacturer
Table 8: Operation of LEDs for indication of the device status
3.1.2 Status area of digital inputs (DI)
Indicating LEDs are meant to show status of digital inputs DI 1 – DI 4 (See section 2.3).
Indicator Status / colour Information
1 – 4 / green Constantly on – specific DI inputs are active
Off – specific DI inputs are inactive
Table 9: Operation of LEDs for status indication of digital inputs (DI)
3.1.3 Status area for system operation
3.1.3.1 Status area of gas detectors
The front panel comprises eight indicating LEDs, where individual LEDs can inform about current status of
the gas detection system:
Indicator Status / colour Information
/ red Overloading status of a detector
ALARM / red Alarm threshold is exceeded
2 / red Second warning threshold is exceeded
1 / red First warning threshold is exceeded
MEAS. / green Gas detector is in operation
FAILURE / yellow Gas detector failed
Table 10: Operation of LEDs for indication of the detector status
For more details – see Sections 3.3.2, 3.3.3.
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User Manual: POD-002-ENG R03