Trouble Shooting - ABB EAN823 Operating Instruction

8

Trouble shooting

This chapter only covers hardware-related errors. For additional troubleshooting information, refer to the online
help for the operator interface.
Error
Valve cannot be moved by actuator.
The actuator does not respond.
Actuator does not run in AUT mode,
although "AUT" is selected in the
user interface.
Actuator does not respond to control
(LED 5 flashing at 1 Hz) (software
version 2.00 and higher).
LEDs in the commissioning and
service panel (ISF) are flashing
synchronously.
LEDs flash alternately.
Malfunction when approaching the
end position.
OI/PME/LME/EAN823/EBN853/EBN861-EN
Possible cause
Failure either on the actuator or the
valve (e.g., stuffing box tightened
too much).
Incorrect electronic unit or incorrect
data record.
Incorrectly configured electronic
unit.
No communication with the control
system.
Incorrect wiring between actuator
and electronic unit.
Defective motor/brake.
Binary inputs on the electronic unit
are not wired.
Brake does not release (no
mechanical "click").
Digital input 1 (DI 1) not wired.
Actuator to manual mode (MAN) via
ISF.
Actuator is not adjusted properly.
Electronic unit / drive malfunction.
Actuator in limit range of positioning
sensor.
Trouble shooting
Troubleshooting
Disconnect actuator from valve.
If the actuator moves, the valve is
the possible cause.
If the actuator does not move, the
actuator is the possible cause.
Compare information on name
plates for actuator and electronic
unit.
Check / change. Change the
settings via the parameterization
software.
Check wiring.
Check wiring.
Check the winding resistance of the
motor and brake.
Check the brake lock.
Make connection.
Check the brake air gap (approx.
0.25 mm (0.010 inch)) and
electrical connection to the brake.
Check winding resistance of the
brake coil.
Make connection.
Check the software settings for the
digital inputs.
Switch actuator to automatic mode
(AUT).
Adjust actuator.
Drive the actuator beyond the
adjusted end position, either
manually or using the buttons on the
ISF; (if necessary disconnect from
valve before)
Drive the actuator back into the
operating range and connect it to the
valve.
Readjust the actuator for the
operating range.
37