Troubleshooting; Troubleshooting Instructions - Endress+Hauser Proline Promass 84 MODBUS RS485 Operating Instructions Manual

Proline Promass 84 MODBUS RS485
Endress+Hauser
10

Troubleshooting

10.1

Troubleshooting instructions

Always start troubleshooting with the following checklist if faults occur after commissioning or
during operation. The routine takes you directly to the cause of the problem and the appropriate
remedial measures.
Check the display
1. Check the supply voltage → Terminal 1, 2
No display visible and no
output signals present.
2. Check device fuse → ä 91
3. Measuring electronics defective → order spare parts → ä 86
No display visible, but 1. Check whether the ribbon-cable connector of the display module is correctly plugged
output signals are present.
2. Display module defective → order spare parts → ä 86
3. Measuring electronics defective → order spare parts → ä 86
Switch off power supply. Press and hold down both the P keys and switch on the
Display texts are in a
foreign language. measuring device. The display text will appear in English (default) and is displayed at
maximum contrast.
Measuring electronics defective → order spare parts → ä 86
Measured value indicated,
but no signal at the current
or pulse output
▼
Error messages on display
Errors that occur during commissioning or measuring are displayed immediately. Error messages consist of a variety of
icons. The meanings of these icons are as follows (example):
– Type of error: S = System error, P = Process error
– Error message type: $ = Fault message, ! = Notice message
– FLUID INHOM. = Error designation (e.g. fluid is not homogeneous)
– 03:00:05 = Duration of error occurrence (in hours, minutes and seconds)
– #702 = Error number
"
Caution!
See the information → ä 35
System error (device error) has occurred → ä 78
Error number:
No. 001 - 399
No. 501 - 699
Process error (application error) has occurred → ä 83
Error number:
No. 400 - 499
No. 700 - 799
▼
Other error (without error message)
Diagnosis and rectification → ä 84
Some other error has
occurred.
85 to 260 V AC: 0.8 A slow-blow / 250 V
20 to 55 V AC and 16 to 62 V DC: 2 A slow-blow / 250 V
into the amplifier board → Page 86 ff.
Troubleshooting
77