Endress+Hauser Prosonic Flow 90, Operating Instructions Manual

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Proline Prosonic Flow 90 9 Trouble-shooting
Hauser 79
9 Trouble-shooting
9.1 Trouble-shooting instructions
Always start trouble-shooting with the checklist below, if faults occur after start-up or during oper-
ation. This takes you directly (via various queries) to the cause of the problem and the appropriate
remedial measures.
Check the display
No display visible and no output
signals present. 1. Check supply voltage
→
Terminal 1, 2
2. Check device fuse
→
Page 92
85...260 V AC: 0.8 A slow-blow / 250 V
20...55 V AC and 16...62 V DC: 2 A slow-blow / 250 V
3. Electronics defective
→
Order spare part
→
Page 88
No display visible, but output
signals are present. 1. Check whether the ribbon-cable connector of the display module is correctly
plugged into the amplifier board
→
Page 90
2. Display module defective
→
Order spare part
→
Page 88
3. Electronics defective
→
Order spare part
→
Page 88
Display texts are in a foreign
language. Switch off power supply. Press and hold down both the
OS
keys and switch on the
measuring device. The display text will appear in English (default) and is displayed
at maximum contrast.
Measured value indicated, but
no signal at the current or pulse
output Electronics PCB defective
→
Order spare part
→
Page 88
▼
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:
– Error type: S = system error, P = process error
– Error message type:
$
= fault message, ! = notice message
– S.VELOC RANGE = error designation (e.g. sound velocity outside measuring range)
– 03:00:05 = duration of error occurrence (in hours / minutes /seconds)
– # 491 = error number
"
Caution!
• See the information on Page 47 ff.!
• The measuring system interprets simulations and measured-value suppression as system errors, but displays them as
information messages only.
Error number:
No. 001
–
399
No. 501
–
799
System error (device error) has occurred
→
Page 80
Error number:
No. 401
–
499
Process error (application error) has occurred
→
Page 84
▼
Other error (without error message)
Some other error has occurred. Diagnosis and remedial measures
→
Page 85