ABB TZIDC-110, Руководство по эксплуатации

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TZIDC-110, TZIDC-120 DIGITAL POSITIONER | OI/TZIDC-110/TZIDC-120-EN REV. H 61
Alarm codes
Alarm code Possible cause Impact Troubleshooting the Instrument
Leakage between positioner and actuator Depending on how well the leakage can be
compensated, small control actions are
required at regular intervals. Check the piping.
The setpoint current is outside the
permissible range, i.e. it is < 3.8 mA or
> 20.5 mA. – Check the power source.
Alarm of the zero monitor. The zero position
has shifted by more than 4%. –
In control mode, a position outside the valve
range can only be reached by moving to the
limit stops, as the setpoint is limited from
0 to 100 % Correct the mounting.
Controlling is inactive, because the device
does not operate in control mode or the
binary input is active. The controller does not follow the setpoint. Switch to control mode or switch off the binary
input.
Positioning timed out. The settling time
needed exceeds the configured stroke time. None, or adaptive control is performed (in
adaptive mode). Ensure that
• the actuator is not blocked.
• the supply air pressure is adequately high.
• the specified time limit is higher than 1.5
times the longest stroke time of the
actuator.
If adaption cannot run uninterruptedly for an
actuator, adaption should be switched on until
the alarm does not occur anymore during
controlling actions.
The defined limit value for the stroke counter
has been exceeded. – Reset the counter (only possible via a
connected PC with suitable software).
The specified limit value for the travel counter
has been exceeded. – Reset the counter (only possible via a
connected PC with suitable software).