Trouble Shooting Mag Converter - Siemens MAG 1100 Handbook

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SITRANS F M MAGFLO
9.2
Trouble shooting
MAG converter
9. Service
Symptom Output
signals
Empty display Minimum
No flow signal Minimum
Undefined
Indicates flow Undefined
with no flow
in pipe
Unstable Unstable
flow signal
Measuring error Undefined
Maximum
Measuring
approx. 50%
Loss of totalizer OK
data
##### OK
Signs in display
DKFD.PS.027.W3.02
Error Cause
code
1. No power supply
2. MAG 5000/6000 defective
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
P42 1. No load on current output
2. MAG 5000/6000 defective
P41 Initializing error
Measuring pipe empty
Empty pipe cut-off is OFF
Electrode connection missing/
electrode cable is insufficiently
screened
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 par-
ticles or fibres
Incorrect installation
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P40 No SENSORPROM unit
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P44 CT SENSORPROM unit
F61 Deficient SENSORPROM
F62 Wrong type of SENSORPROM
unit
F63 Deficient SENSORPROM
F71 Loss of internal data
W30 Flow exceeds 100% of Q
max.
W21 Pulse overflow
• Volume/pulse too small
• Pulse width too large
Missing one electrode
connection
W20 Initializing error
Totalizer roll over
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 s 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
Install SENSORPROM
Replace SENSORPROM
or reset SENSORPROM
with MAG CT converter
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unit Replace SENSORPROM
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Replace SENSORPROM
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unit Replace SENSORPROM
Replace MAG 5000/6000
Check Q (Basic Settings)
max.
Change volume/pulse
Change pulse width
Check cables
Reset totalizer manually
Reset totalizer or increase
totalizer unit
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unit
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unit
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unit
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unit
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unit
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unit
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