Siemens MAG 1100, Operating Instructions Manual, Page: 159 / 665

84
SITRANS F M 9. Service
9.2
Trouble shooting
MAG transmitter
Symptom Output Error Cause Remedy
signals code
Empty display Minimum 1. No power supply Power supply
Check MAG 5000/6000 for
bended pins on the connector
2. MAG 5000/6000 defective Replace MAG 5000/6000
No flow signal Minimum 1. Current output disabled Turn on current output
2. Digital output disabled Turn on digital output
3. Reverse flow direction Change direction
F70 Incorrect or no coil current Check cables/connections
W31 Measuring pipe empty Ensure that the measuring
pipe is full
F60 Internal error Replace MAG 5000/6000
Undefined P42 1. No load on current output Check cables/connections
2. MAG 5000/6000 defective Replace MAG 5000/6000
P41 Initializing error Switch off MAG 5000/6000,
wait 5 s and switch on again
Indicates flow Undefined Measuring pipe empty Select empty pipe cut-off
with no flow
Empty pipe cut-off is OFF Ensure that the measuring
in pipe
pipe is full
Electrode connection missing/ Ensure that electrode cable
electrode cable is insufficiently is connected and sufficiently
screened screened
Unstable Unstable 1. Pulsating flow Increase time constant
flow signal
2. Conductivity of medium Use special electrode cable
too low
3. Electrical noise potential Ensure sufficient potential
between medium and equalization
sensor
4. Air bubbles in medium Ensure medium does not
contain air bubbles
5. High concentration of par- Increase time constant
ticles or fibres
Measuring error Undefined Incorrect installation Check installation
P40 No SENSORPROM
®
unit Install SENSORPROM
®
unit
P44 CT SENSORPROM
®
unit Replace SENSORPROM
®
unit
or reset SENSORPROM
®
unit
with MAG CT transmitter
F61 Defective SENSORPROM
®
unit Replace SENSORPROM
®
unit
F62 Wrong type of SENSORPROM
®
Replace SENSORPROM
®
unit
unit
F63 Defective SENSORPROM
®
unit Replace SENSORPROM
®
unit
F71 Loss of internal data Replace MAG 5000/6000
Maximum W30 Flow exceeds 100% of Q
max.
Check Q
max.
(Basic Settings)
W21 Pulse overflow
•
Volume/pulse too small Change volume/pulse
•
Pulse width too large Change pulse width
Measuring Missing one electrode Check cables
approx. 50%
connection
Loss of totalizer OK W20 Initializing error Reset totalizer manually
data
##### OK Totalizer roll over Reset totalizer or increase
Signs in display
totalizer unit