Maintenance; Service; Troubleshooting; Error Codes - Landis+Gyr E450 User Manual

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6

Maintenance

6.1

Service

6.2

Troubleshooting

6.2.1

Error Codes

Critical Errors
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© Landis+Gyr
The E450 meter has no serviceable parts.
Device service is available from the local Landis+Gyr representative.
If the meter is not operating correctly, check the error displays and LED
(see section 5.1 "Display" for instructions on how to use the display). The
following points should be checked first if there are problems in the meter
operation:
1. Is the mains voltage present (check display of meter)?
2. Is the PLC device communication status OK?
3. Has the maximum ambient temperature not been exceeded?
4. Is the meter visibly damaged?
5. Is there any error code displayed (code F.F)? The error codes are
described in section 6.2.1 "Error Codes".
The meter performs regular internal self-tests. If a problem is detected
during self-test an error code is displayed.
Errors are assigned to an error category depending on severity:
•
Critical errors
•
Communication errors
•
Other errors
Critical errors indicate severe problems but the device can still operate.
However the data measured and stored in the meter may be corrupted and
it is recommended that meters showing critical errors are returned to the
Landis+Gyr service centre.
If the device is displaying the F.F register with an error and blinking alarm
symbol there is a critical error.
The F.F register will continue to be displayed until either the display or reset
keys are pressed or the error register is cleared. If the error register is not
cleared, the failure code can be viewed in the installation/service menu or
by reading the F.F register through the communications interface.
Critical errors can only be cleared via communication with a reset com-
mand. In order to reset the required access right must be set in the para-
meterisation.
F.F register is not cleared with power cycling or key press
Power cycling or pressing the display or reset key do not clear the F.F
register. Pressing the display or reset key only sets the display to normal
operation.
D000029326 en g – E450 PLC 1-phase ZCX100Px – User Manual
Maintenance