TZIDC, TZIDC-200
| COI/TZIDC/TZIDC-200-EN 35
4.2
Alarm codes
Alarm code
Possible cause
Impact
Troubleshooting the Instrument
Leakage between positioner and actuator
De pending 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.
.
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-
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 driving
to the limit stops, as the setpoint is limited
to 0 ... 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 o
ff
the
binary input.
Positioning timed out. The settling time
needed exceeds the con
fi
gured stroke
time.
None, or adaptive control is performed (in
adaptive mode).
Ensure that
— the actuator is not blocked.
— the supply air pressure is adequate.
— the given 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 de
fi
ned limit value for the stroke
counter has been exceeded.
a
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R
-
connected PC with suitable software).
The speci
fi
ed limit value for the travel
counter has been exceeded.
a
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connected PC with suitable software).
