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Malfunctions
Table 9-1: Error messages
Reading: green LED blinks
Error status
Cause
Impact
Recommended action
Reading: red LED blinks
Error status
Cause
Impact
Recommended action
Reading: red LED illuminated
Error status
Cause
Impact
Recommended action
9-2
Maintenance demanded
− Internal pulse generator (crystal oscillator) has failed.
− Output rate of 1 ms cannot be maintained.
− The device continues to run at a slower output rate.
Î Replace the device during the next service routine.
Î Contact SAMSON's After-sales Service.
Out of specification
− Temperature limits have been exceeded.
− Adjusted measuring range is too small (span error).
− Position measurement is not possible.
− The residual current I ≤ 3.6 mA is issued at the output.
Î Run the device within specification
(see technical data in the 'Design and principle of operation' section).
Î Check positioner attachment, lever and pin position (see the 'Installati-
on' section).
Î Check the control valve to ensure it functions properly.
Î Check power supply/electrical signal.
Î Adjust zero and span (see the 'Start-up' section).
Failure
− Defect in the electronics or memory error
− The device is not running within specification
− Position measurement is not possible.
− The residual current I ≤ 3.6 mA is issued at the output.
Î Press key to reset.
Î Contact SAMSON's After-sales Service if the error message reoccurs.
EB 4749 EN
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