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APV_CU4plus_AS-interface_UK-3_062019.indd
UK
Control Unit
CU4plus AS-interface
Instruction Manual UK-3
APV
57
11. Trouble Shooting
Failure
Remedy
Valve position is not indicated.
Carry out teach-in.
Check fastening of magnetic switching
cam.
Check adjusted logic profile and
process valve.
Feedback via proximity
switches is missing.
Check positioning of proximity
switches.
Check AS-i bus communication.
Check cabeling to the electronic
module.
LED indication is missing.
Check AS-i bus communication.
Check cabeling to the electronic
module.
Control Unit CU41 installed on Butterfly valves
Movement of valve flap is
missing with actuated solenoid
valve.
Check if right control unit is installed.
Check label in type window of control
unit: CU41plus-T AS-i
Check valve movement with manual at
solenoid valve.
Check cabeling between electronic
module and solenoid valve.
Check compressed air (min. 6 bar).
Bore for transfer of control air to turning
actuator must be open.
Air leakage at lower side of
adapter.
Check o-rings of adapter.