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Control Unit CU4 AS-interface UK-0 / 31.05.2010
Control Unit
CU4 AS-interface
Operating Manual: UK-0
UK
11. Trouble Shooting
F a i l u r e
R e m e d y
Valve position is not indicated.
Re-adjust Hall sensors.
Check fastening of magnetic operating cam.
Check cabeling of the Hall sensors to the electronic
module.
Feedback via proximity switches is missing
Check positioning of proximity switches.
Check operating voltage.
Check cabeling to the electronic module.
LED indication is missing
Check operating voltage.
Check cabeling to the electronic module.
LEDs
'valve open'
and
'valve closed'
are flashing
No bridge between the terminals 10, 11 and 12.
Install the corresponding bridge.
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:
CU41-T-AS-interface (1 EMV/solenoid valve)
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.