gefran I3 Series Instruction Manual page 30

In the tab. 4 the most common failures and troubleshooting are pointed out:
Failure Possible causes
The sensor doesn't • Pressure channel occlusion
signal pressure and • Output stage failure
no alarm signal is • Preload loss from -2,25% to -30% of span
activated • Over Pressure from 106% to 150% of span
The sensor alarm • Brochen Chip
signal is "HIGH" • Broken primary element
• Pin detachement
The sensor alarm • Cut cable / broken connector
signal is "LOW" • Device not connected
• Broken supply
• Overvoltage
• Undervoltage
• Floating power supply
• Pressure above threshold (1,5 x FS)
• Preload loss exceeds < - 30% of span
• Program sequence error
• Overtemperature on electron ics
• Error on primary element/ input stage error
The CAL function • Broken electronics
doesnìt work • Zero signal threshold out of range
• Broken connector/cut cable
The AUTOZERO • Broken electronics
function doesn't • Zero signal outside activation range
work • Broken connector/cable
(only external autozero version)
• Wrong magnetic pen positioning
Tab. 4 - Troubleshooting
30
Troubleshooting
1 - Sensor power-off and disassembly
2 - Double check possible pressure channel occlusion and clean
it from residuals or material
3 - Do the AUTOZERO function. If the problem persists, send the
sensor to factory for repair
4 - Reduce the process pressure under the F.S. value
1 - Sensor power-off and disassembly
2 - If the problem persists, send the sensor to factory for repair
3 - If the sensor works fine, mount the sensor in the seat
following instruction manual
1 - Sensor power-off and disassembly
2 - Check the correct connection of power supply
3 - Check the electrical continuity between the female plug and
the power supply
4 - Check if the power supply level is within specifications
5 - Check voltage supply stability
6 - If the sensor works fine, mount the sensor in the seat
following instruction manual
1 - Stop the machine and make sure the pressure is zero
2 - Check the cable and connector and replace if necessary
3 - Do the following in sequence:
• RESET PARAMETER
• AUTOZERO
• CALIBRATION
4 - If the problem persists, send the sensor to factory for repair
1 - Stop the machine and make sure the pressure is zero
2 - Make sure you are doing the operation with pen and autozero
mark correctly aligned.
3 - Run RESET PARAMETERS; if the difference in absolute
value between the read and theoretical zero signal is greater
than 40% FS, remove the sensor, check and clean its seat,
reinsert the sensor and rerun AUTOZERO.
4 - If the difference in absolute value between the read and
theoretical zero signal is less than 40% FS, check the cable
and connector and replace if necessary
5 - If the problem persists, send the sensor to factory for repair
80175G_MAN_I3-IE-IN-IX_I7_11-2018_ENG