Operation
Page 48 of 62
User Manual QT50 Doc ID 1321 version 2.0 Sept. 2018
Problem description
Cause & solution
The actuator’s alarm output is active; on a
CANopen system, it gives temperature alarm.
The actuator does not respond to control
signals.
The actuator is over-heated, and the motor
current is shut down to prevent damage.
Make sure surrounding temperature is within
limits and that the duty type requirements are
followed.
See section
5.2 Error alarms and error handling
on page 46for more details.
The actuator’s alarm output is active; on a
CANopen system, it gives status signal
emergency, and the actuator is not being
operated manually.
The self-locking device fails to lock and hold the
valve into its commanded position.
Check that the position is configured correctly,
and that the torque setting is sufficient for the
valve.
Contact the local Eltorque agent for support if
required.
The actuator does not respond to control
signals. Indicator LED is on.
On a fieldbus system, the actuator is not
available.
Faulty control system, please ask system vendor
for support.
OR
Problem with control signal wiring, please
contact the local Eltorque agent for support.
An actuator with CANopen interface does not
respond to control signals.
The actuator responds normally when tested
with E3C.
Fieldbus settings may be incorrect. Please check
configuration with E3C.
OR
Fieldbus control system is not wired or
configured correctly.
An actuator with digital or analog interface does
not respond normally to control signals.
The actuator responds normally when tested
with E3C.
Digital or analog control system is not wired or
configured correctly.
The actuator does not respond neither to control
signals nor when tested with E3C.
The actuator’s power supply is verified with
voltage meter. LED indicator is on.
The control interface is most likely defective and
must be replaced.
OR
Problem with the control signal wiring, please
contact the local Eltorque agent for support.
After replacement of the interface, the actuator
does not operate correctly.
The interface has not been configured correctly,
please refer to the E3C User Manual.
Contact your local Eltorque agent for support if
required.
The valve is not properly closed (leaking), and
the actuator is indicating status closed or alarm
(position error on fieldbus)
Check that the closed position setting is
configured correctly. For butterfly valves, make
sure that the disk aligns in the middle of the
gasket. Manually operate the actuator to the
proper closed position and set new closed
position with E3C or fieldbus. If leakage persist,
please check valve seat face.
