Detector Fault / Warning Message Display; Detector Fault / Warning Operation; Reflex™ Cell Fault Diagnosis - Honeywell 3000 MkII-Series Technisches Handbuch

SERIES 3000 MKII TECHNICAL MANUAL

13. Detector fault / warning message display

The table below shows the warning / fault codes, their meaning and recommended action.
Warning / Fault
Code
Warnings
Sensor operating temperature limits
W01
exceeded.
W02 Calibration overdue.
W03 Transmitter temperature limits exceeded. Use '' to clear when within limits
Faults
F01 Sensor / transmitter comms failure
F02 Cell failure
F03 Zero drift (>5% of scale)
F04 No sensor detected
F05 Sensor EEPROM corrupted
F06 Low supply voltage
F07 Comms monitoring failure
F08 RAM read / write fault
F09 Flash memory corrupted
F10 Flash code memory corrupted
F11 DAC output mismatch

13.1 Detector fault / warning operation

Faults are signalled via the code on the display and 3mA (default) output. If the condition causing the
fault clears the 4-20mA returns to normal operation, but the display will continue to indicate the fault
code. This allows the user to see the code before using '' (>2 seconds and <5 seconds) to clear the
code from the display.
Warnings are signalled via the code on the display. Warnings do not affect the mA output of the detector*.
If the condition causing the warning clears, the display will continue to show the warning code until user
uses '' to clear the code from the display.
Any faults or warnings where the condition causing it still exists cannot be cleared.
*Note: The calibration due warning can be configured to produce a fault output (see section 12 for
further details).
13.2 Reflex™ cell fault diagnosis
Series 3000 MkII employs the patented Reflex™cell fault diagnosis routine. Reflex™ checks for cell
presence, cell dry out and cell open or short circuit. In the event of an electrochemical cell failing this test,
the sensor fault code is displayed. Reflex™ is automatically initiated by the transmitter at 8 hourly intervals.
It is also initiated on power up, sensor exchange or sensor cell exchange.
Note: Regular response gas checks and calibrations should still be carried out. Reflex™ is not used
on Nitric Oxide or Oxygen cells.
Description
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S3KMKIIMAN_MAN0878_Issue 8_08/2015
Action
Use '' to clear when within limits
Re-calibrate detector. Disable warning
Replace sensor
Replace sensor
Re zero / calibrate
Replace sensor
Replace sensor
Check supply voltage.
Replace detector.
Use '' to clear. Replace detector.
Cycle power to detector.
Replace detector
Replace detector
Replace detector
Cycle power to detector.
Replace detector