Troubleshooting/Faqs - Siemens SITRANS F M MAG 5000 Manual

10

Troubleshooting/FAQs

Symptom
Empty display
No flow signal
Indicates flow with no
flow in pipe
Unstable flow signal
Measuring error
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Output Error Cause
signals code
Minimum 1. No power supply
2. MAG 5000/6000 defective
Minimum 1. Current output disabled
2. Digital output disabled
3. Reverse flow direction
F70 Incorrect or no coil current
W31 Measuring pipe empty
F60 Internal error
Undefined P42 1. No load on current output
2. MAG 5000/6000 defective
P41 Initializing error
Undefined Measuring pipe empty
Empty pipe cut-off is OFF
Electrode connection
missing/electrode cable is
insufficiently screened
Unstable 1. Pulsating flow
2. Conductivity of medium too
low
3. Electrical noise potential
between medium and sensor
4. Air bubbles in medium
5. High concentration of
particles or fibres
Undefined Incorrect installation
P40 No SENSORPROM
P44 CT SENSORPROM
F61 Defective SENSORPROM
unit
F62 Wrong type of
SENSORPROM
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Remedy
Power supply
Check MAG 5000/6000 for bended
pins on the connector
Replace MAG 5000/6000
Turn on current output
Turn on digital output
Change direction
Check cables/connections
Ensure that the measuring pipe is full
Replace MAG 5000/6000
Check cables/connections
Replace MAG 5000/6000
Switch off MAG 5000/6000, wait 5
sec. and switch on again
Select empty pipe cut-off
Ensure that the measuring pipe is full
Ensure that electrode cable is
connected and sufficiently screened
Increase time constant
Use special electrode cable
Ensure sufficient potential
equalization
Ensure medium does not contain air
bubbles
Increase time constant
Check installation
unit Install SENSORPROM
®
unit Replace SENSORPROM
®
reset SENSORPROM
CT transmitter
Replace SENSORPROM
®
Replace SENSORPROM
unit
®
10
unit
®
unit or
®
unit with MAG
®
unit
®
unit
®
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