Remedy
Description/cause
Indication on display
Press push button
Details
to display a list
of individual indications.
Collective signal 15:
Device warnings
The device can still be operated with restric-
tions.
Internal warning
Check 24 V DC voltage supply.
The external 24 V DC voltage supply of the
controls has exceeded the power supply limits.
24 V DC external
●
Check modulating behaviour of actuator.
●
Check parameter
Perm. running time/h
M0356
, re-set if required.
Warning on time max. running time/h ex-
ceeded
Wrn on time running
●
Check modulating behaviour of actuator.
●
Check parameter
Permissible starts/h
M0357
, re-set if required.
Warning on time max. number of motor starts
(starts) exceeded
Wrn on time starts
Verify signals:
●
Setpoint E1
●
Actual value E2
●
Actual process value E4
The failure behaviour is active since all re-
quired setpoints and actual values are incor-
rect.
Failure behav. active
Check wiring.
Warning: Loss of signal analogue input 1
Wrn input AIN 1
Check wiring.
Warning: Loss of signal analogue input 2
Wrn input AIN 2
Check setpoint signal.
Warning: Loss of signal of actuator setpoint
position
Possible causes:
Input signal for setpoint = 0 (signal loss)
Wrn setpoint position
The warning indications are automatically
cleared once a new operation command is
executed.
●
Check valve.
●
Check parameter
Perm.op. time, manual
M0570
.
The set time (parameter
Perm.op. time,
manual M0570
) has been exceeded. The
preset operating time is exceeded for a com-
plete travel from end position OPEN to end
position CLOSED.
Op. time warning
Measure/reduce ambient temperature.
Temperature within controls housing too high
Wrn controls temp.
Check actuator sizing, correct accordingly.
Temperature within motor winding too high
Wrn motor temp.
Check actuator sizing, correct accordingly.
Temperature within actuator gear housing too
high
Wrn gearbox temp.
Set time.
Real time clock has not yet been set.
RTC not set
Replace button cell.
Voltage of the RTC button cell is too low.
RTC button cell
Check actuator (PVST settings).
Partial Valve Stroke Test (PVST) could not be
successfully completed.
PVST fault
Perform RESET or restart PVST.
Partial Valve Stroke Test (PVST) was aborted
or could not be started.
PVST abort
●
Check movement at actuator.
●
Check parameter
Reaction time M0634
.
No actuator reaction to operation commands
within the set reaction time.
Wrn no reaction
Check/repair FO cables.
Optical receiving signal (channel 1) incorrect
(no or insufficient Rx receive level) or RS-485
format error (incorrect bit(s))
Wrn FOC
Check/repair FO cables.
Warning: FO cable system reserve reached
(critical or permissible Rx receive level)
Wrn FO cable budget
Fit FO cable connection.
Warning FO cable connection is not available.
Wrn FOC connection
Check parameter
Wrn torque OPEN M0768
,
re-set if required.
Limit value for torque warning in direction
OPEN exceeded.
Torque wrn OPEN
Check parameter
Wrn torque CLOSE M0769
,
re-set if required.
Limit value for torque warning in direction
CLOSE exceeded.
Torque wrn CLOSE
Table 12: Faults and Failure
Remedy
Description/cause
Indication on display
Press push button
Details
to display a list
of individual indications.
Collective signal 11:
Configuration error has occurred.
Configuration error
50
SQ 05.2 – SQ 14.2/SQR 05.2 – SQR 14.2 Control unit: electronic (MWG)
Corrective action
AC 01.2 Non-Intrusive
