Operation Manual

Continuous valve actuator CHEOPS control
theben
As of: Jul-11 (Subject to change without notice) Page 64 of 71
Table 29: General, for every hard and software version.
Response
Potential cause
Remedy
Valve does not close when
actuating value is 0%
Valve seal is insufficient for
pressing onto the valve seat
Enter additional pressing of
rubber seal.
Caution: Increase parameter
by max. increments of 10.
OR (from 2008):
Choose another calibration
strategy.
Valve seal is damaged
Replace valve.
Valve opens only with an
unexpectedly large actuating
value
Existing valve seal is too soft
Adapt parameter type of valve
seal.
Valve opens only with
actuating values over:
5% ⇒Standard valve seal
10% ⇒ medium-soft seal
20% ⇒ select soft seal
Valve does not move to
positions below or above a
certain value
Minimum or maximum
actuating value parameter(s)
have been changed
Check minimum and
maximum actuating value
parameters
No LED display and no
automatic adaption
after reset
Device was unloaded with
ETS software
Reload individual address
+ application program
Error message with ETS
device info / Application
program:
Run state

Halted
Device was unloaded with
ETS software
Reload individual address
+ application program
6.1 Display current valve position
The current valve position can be viewed by simultaneously the blue and red buttons.
Position:
80..100%
60..80%
40..60%
20..40%
1..20%