Faults and Failure
Remedy
Description/cause
Indication on display
Check operation command control.
For 3-phase AC current mains, activate phase
monitoring (parameter
Adapt rotary dir. M0171
).
Check device configuration setting (parameter
Closing rotation M0176
).
To delete the fault indication: Disconnect actuator
controls from the mains and perform reboot.
Contrary to the configured direction of rotation and
the active operation command, the motor turns into
the wrong direction.
Incorrect rotary direct.
Motor protection: Fault within converter
Rectifier fault
Check
DMF trip torque OP
parameter.
Check
DMF fault level
parameter.
The torque in direction OPEN, measured at the
output drive shaft using the torque measurement
flange, is too high.
DMF fault OPEN
1)
Check
DMF trip torque CL
parameter.
Check
DMF fault level
parameter.
The torque in direction CLOSE, measured at the
output drive shaft using the torque measurement
flange, is too high.
DMF fault CLOSE
1)
For actuators equipped with torque measurement flange (DMF)
1)
Table 31:
Not ready REMOTE and Function check (collective signal 04)
Remedy
Description/cause
Indication on display
●
Check operation commands (reset/clear all op-
eration commands and send one operation
command only).
●
Set parameter
Positioner
to
Function active
.
●
Check setpoint.
Press push button
Details
to display a list of indi-
vidual indications.
For a description of the individual signals, refer to
Manual (Operation and setting).
Collective signal 13:
Possible causes:
●
Several operation commands (e.g. OPEN and
CLOSE simultaneously, or OPEN and SET-
POINT operation simultaneously)
●
A setpoint is present and the positioner is not
active
Wrong oper. cmd
Set selector switch to position REMOTE.
Selector switch is not in position REMOTE.
Sel. sw. not REMOTE
Exit service software.
Operation via service interface (Bluetooth) and
AUMA CDT service software.
Service active
Check setting and status of function <Local controls
enable>.
Actuator is in operation mode Disabled.
Disabled
●
Enable EMERGENCY stop switch.
●
Reset EMERGENCY stop state by means of
Reset command.
The EMERGENCY stop switch has been operated.
The motor control power supply (contactors or
thyristors) is disconnected.
EMCY stop active
●
Detect cause for EMERGENCY signal.
●
Verify failure source.
●
Apply +24 V DC at EMERGENCY input.
Operation mode EMERGENCY is active (EMER-
GENCY signal was sent).
0 V are applied at the EMERGENCY input.
EMCY behav. active
Check I/O interface.
The actuator is controlled via the I/O interface (par-
allel).
I/O interface
Start motor operation.
Manual operation is activated.
Handwheel active
Check interlock signal.
An interlock is active.
Interlock
Check states of main and by-pass valve.
By-pass function is interlocked.
Interlock by-pass
Wait until PVST function is complete.
Partial Valve Stroke Test (PVST) is active.
PVST active
Temperature monitoring of PTC tripping device
The temperature monitoring of PTC tripping device must be connected and monitored
in an external system circuit. The signal is issued via an output contact.
Designation in the wiring diagram:
TEMP-WARNING PTC TRIPPING DEVICE
Active signal = NC contact open (NO contact = closed)
Active signal means: The PTC tripping device temperature is not within the permitted
temperature range.
74
SAVEx 07.2 – SAVEx16.2/SARVEx 07.2 – SARVEx16.2 Control unit: electronic (MWG)
Corrective action
ACVExC 01.2 Non-Intrusive
