Honeywell 5701 Operating Instructions Manual page 154

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 5 - COMMISSIONING AND
MAINTENANCE INSTRUCTIONS
Error
Code
77
76
75
Error Code Meaning
If required, this function can be disabled
using the Engineering Interface Software
configuration program.
Zero Signal Too Low
The zero signal too low message is displayed
during calibration when the sensor zero
signal is below the pre-configured levels and
a zero calibration can not be achieved.
For catalytic sensors this would typically
signify there is a large imbalance between
the two detecting elements of the sensor.
The sensor installation should be checked
for loose wires or the sensor replaced.
For mA sensors this would typically signify
that the mA output from the sensor requires
calibrating.
Zero Signal Too High
The zero signal too high message is
displayed during calibration when the sensor
zero signal is above the pre-configured levels
and a zero calibration can not be achieved.
This is typical of the sensor detecting its
target gas and zero gas should be applied to
the sensor. Alternatively, for catalytic sensors,
this would typically signify there is a large
imbalance between the two detecting
elements of the sensor. The sensor
installation should be checked for loose wires
or the sensor replaced.
For mA sensors this would typically signify
that the mA output from the sensor requires
calibrating.
Calibration Signal Too Low
The calibration signal too low message is
displayed during calibration when the sensor
span signal is below the pre-configured
levels and a span calibration can not be
achieved.
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5701 Control System
S/W Card Fault
Status Signal
All Active No
All Active No
All Active No
Latch
No
No
No