Endress+Hauser Proline t-mass 65 PROFIBUS DA, Operating Instructions Manual

Page: 92 / 127

Trouble-shooting Proline t-mass 65 PROFIBUS DP/PA
92 Hauser
10 Trouble-shooting
10.1 Trouble-shooting 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
No display visible and no
output signals present. 1. Check the supply voltage

Terminals 1, 2
2. Check device fuse
→
108
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
3. Measuring electronics defective

order spare parts
→
102
No display visible, but
output signals are pres-
ent. 1. Check whether the ribbon-cable connector of the display module is correctly
plugged into the amplifier board
→
102.
2. Display module defective

order spare parts
→
102
3. Measuring electronics defective

order spare parts
→
102
Display texts are in a for-
eign language. Switch off the power supply. Press and hold down both
P
keys and switch on the
measuring device. The display text will appear in English (default) and is displayed at
maximum contrast.
Measured value indi-
cated, but no signal at the
current or pulse output Measuring electronics defective

order spare parts
→
102
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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
– FLOW LIMIT = Error designation, e.g. measured flow has exceeded the maximum limit.
– 03:00:05 = Duration of error occurrence (in hours, minutes and seconds)
– #422 = Error number
"
Caution!
• See the information on
→
41.
• The measuring device interprets simulations and positive zero return as system errors, but displays them as a
notice message only.
t
Faulty connection to PROFIBUS Master
No connection can be made between the PROFIBUS Master and the device.
Check the following points:
Supply voltage
Transmitter Check the Supply voltage

Terminals 1/2
Device fuse Check device fuse
→
102
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
Fieldbus connection Check data line:
Terminal 26 = B (RxD/TxD-P)
Terminal 27 = A (RxD/TxD-N)
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