Endress+Hauser Cerabar S PMP7, Operating Instructions Manual

Page: 42 / 56

Troubleshooting Cerabar S 4 to 20mA HART
42 Hauser
721 (A721) Alarm
B B>ZERO POSITION level out of
edit limits – LEVEL MIN or LEVEL MAX has
been changed.
– Perform reset (Code 2710) and carry
out calibration again.
41
722 (A722) Alarm
B B>EMPTY CALIB. or FULL
CALIB. out of edit limits – LEVEL MIN or LEVEL MAX has
been changed.
– Perform reset (Code 2710) and carry
out calibration again.
42
725 (A725) Alarm
B B>Sensor connection error, cycle
disturbance – Electromagnetic effects are greater
than specifications in the technical
data.

See Technical Information
TI00383P.
– Block off electromagnetic effects or
eliminate source of disturbance.
25
– Sensor or main electronics defective. – Replace sensor or main electronics.
726 (E726) Error
C
Factory
setting:
Warning C>Sensor temperature error -
overrange – Electromagnetic effects are greater
than specifications in the technical
data.

See Technical Information
TI00383P.
– Block off electromagnetic effects or
eliminate source of disturbance.
31
– Process temperature is outside
permitted range.
– Check temperature present, reduce
or increase if necessary.
– Sensor defective. – If the process temperature is within
the permitted range, replace sensor.
727 (E727) Error
B
Factory
setting:
Warning B>Sensor pressure error -
overrange – Electromagnetic effects are greater
than specifications in the technical
data.

See Technical Information
TI00383P.
– Block off electromagnetic effects or
eliminate source of disturbance.
28
– Pressure is outside permitted range. – Check pressure present, reduce or
increase if necessary.
– Sensor defective. – If the pressure is within the
permitted range, replace sensor.
728 (A728) Alarm
B B>RAM error – Fault in the main electronics. – Briefly disconnect device from the
power supply.
2
– Main electronics defective. – Replace main electronics.
729 (A729) Alarm
B B>RAM error – Fault in the main electronics. – Briefly disconnect device from the
power supply.
3
– Main electronics defective. – Replace main electronics.
730 (E730) Error
C
Factory
setting:
Warning C>LRV user limits exceeded – Pressure measured value has
undershot the value specified for the
Pmin ALARM WINDOW parameter.
– Check system/pressure measured
value.
– Change value for Pmin ALARM
WINDOW if necessary. (

See also
Page 35, parameter description for
PminALARM WINDOW).
46
– Loose connection at sensor cable – Wait a short period of time and
tighten the connection, or avoid
loose connection.
731 (E731) Error
C
Factory
setting:
Warning C>URV user limits exceeded – Pressure measured value has
overshot the value specified for the
Pmax ALARM WINDOW
parameter.
– Check system/pressure measured
value.
– Change value for Pmax ALARM
WINDOW if necessary. (

See also
Page 35, parameter description for
PmaxALARM WINDOW).
45
Code Error type/
NA 64 Message/description Cause Measure Priority