45
7 Diagnostics and servicing
WIKA Operating Instructions - Process pressure transmitter IPT-2x
Code
Text message
Cause
Rectification
M500
Error in the delivery status
The data could not be restored during
the reset to delivery status
Repeat reset
Load XML file with sensor data into the
sensor
M501
Error in the non-active lineari-
sation table
Index markers are not continuously ris-
ing, for example illogical value pairs
Check linearisation table
Delete table/Create new
M502
Error in the event memory
Hardware error EEPROM
Exchanging the electronics
Send instrument for repair
M504
Error at a device interface
Hardware defect
Exchanging the electronics
Send instrument for repair
M507
Error in the instrument set-
tings
Error during setup
Error when carrying out a reset
Carry out reset and repeat setup
Tab. 8: Error codes and text messages, information on causes as well as corrective measures
7.3 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The first measures are:
•
Evaluation of fault messages
•
Checking the output signal
•
Treatment of measurement errors
Further comprehensive diagnostics options are available with a PC/
notebook with PACTware and the suitable DTM. In many cases, the
reasons can be determined in this way and faults rectified.
Connect a multimeter in the suitable measuring range according to
the wiring plan. The following table describes possible errors in the
current signal and helps to eliminate them:
Error
Cause
Rectification
4 … 20 mA signal not stable
Fluctuating measured value
Set damping
4 … 20 mA signal missing
Electrical connection faulty
Check connection, correct, if necessary
Voltage supply missing
Check cables for breaks; repair if nec-
essary
Operating voltage too low, load resist-
ance too high
Check, adapt if necessary
Current signal greater than
22 mA, less than 3.6 mA
Sensor electronics defective
Replace device or send in for repair de-
pending on device version
Maintenance
Reaction when malfunc-
tion occurs
Fault rectification
4 … 20 mA signal
