Warnings and Out of specification
Remedy
Description/cause
Indication on display
Check wiring.
Warning: Loss of signal analogue input 2
Wrn input AIN 2
Check setpoint signal.
Warning: Loss of signal setpoint position
Possible causes:
For an adjusted setpoint range of e.g. 4 – 20 mA,
the input signal is 0 (signal loss).
For a setpoint range of 0 – 20 mA , monitoring is
not possible.
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 complete 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.
Set time.
Real time clock has not yet been set.
Time not set
Replace button cell.
Voltage of the RTC button cell is too low.
RTC voltage
Check actuator (PVST settings).
Partial Valve Stroke Test (PVST) could not be suc-
cessfully 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
1)
Check/repair FO cables.
Warning: FO cable system reserve reached (critical
or permissible Rx receive level)
Wrn FO cable budget
1)
Fit FO cable connection.
Warning FO cable connection is not available.
Wrn FOC connection
1)
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
Refer to separate Manual Functional Safety.
SIL sub-assembly fault has occurred.
SIL fault
2)
Execution of PVST (Partial Valve Stroke Tests) is
required.
PVST required
Maintenance is required.
Maintenance required
Checking and fault remedy are required. Refer to
FQM operation instructions.
FQM fault
FQM fail safe fault
3)
For actuator controls with FOC connection
1)
For actuators controls in SIL version
2)
For actuators with fail safe unit
3)
67
SQ 05.2 – SQ 14.2 / SQR 05.2 – SQR 14.2 Control unit - electromechanical
AC 01.2 Intrusive Modbus RTU
Corrective action
