Endress+Hauser Proline Promag 55 - Page 128

Troubleshooting Proline Promag 55 PROFIBUS DP/PA
128 Endress+Hauser
261 S: COMMUNICAT. I/O
$: # 261
0x18
0x19
0x1A
BAD
BAD
No
Communica-
tion
O.K.
Low
High
Communication
failure
Cause:
Communication error. No data reception between
amplifier and I/O board or faulty internal data
transfer.
Remedy:
Check whether the electronics boards are correctly
inserted in their holders  ä 137.
No. # 3xx  System limits exceeded
321 S: TOL. COIL CURR.
$: # 321
0x0F BAD
BAD
Device Failure
Device Failure
Constant Coil current out of
tolerance
Cause:
The coil current of the sensor is out of tolerance.
Remedy:
#
Warning!
Switch off power supply before manipulating the
coil current cable, coil current cable connector or
measuring electronics boards!
Remote version:
1. Check wiring of terminals 41/42  ä 40.
2. Check coil current cable connector.
Compact and remote version:
Replace measuring electronics boards if necessary
339
…
342
S: STACK CUR OUT n
$: # 339 to 342
0x0F BAD
BAD
Device Failure
Device Failure
Constant Temp. Buf. not
cleared
Cause:
The temporarily buffered flow portions (measuring
mode for pulsating flow) could not be cleared or
output within 60 seconds.
Remedy:
1. Change the upper or lower limit setting, as
applicable.
2. Increase or reduce flow, as applicable.
Recommendation:
– Configure the fault response of the output to
ACTUAL VALUE, so that the temporary buffer
can be cleared.
– Clear the temporary buffer by the measures
described under Item 1.
343
…
346
S: STACK FREQ. OUT n
$: # 343 to 346
0x0F BAD
BAD
Device Failure
Device Failure
Constant Temp. Buf. not
cleared
347
…
350
S: STACK PULSE OUT n
!: # 347…350
0x0F BAD
BAD
Device Failure
Device Failure
Constant Temp. Buf. not
cleared
Cause:
The temporarily buffered flow portions (measuring
mode for pulsating flow) could not be cleared or
output within 60 seconds.
Remedy:
1. Increase the setting for pulse weighting.
2. Increase the max. pulse frequency, if the
totalizer can handle a higher number of pulses.
3. Increase or reduce flow, as applicable.
Recommendation:
– Configure the fault response of the output to
ACTUAL VALUE, so that the temporary buffer
can be cleared.
– Clear the temporary buffer by the measures
described under Item 1.
No. Device status message
(local display)
PROFIBUS measured value status
Extended
diagnostic
message in the
PROFIBUS
master
Cause/remedy
(Spare parts  ä 135 ff.)
Quality code (HEX)
Measured value status
Quality status
Quality substatus
Limits