Operation Manual

Continuous valve actuator CHEOPS control
theben
As of: Jul-11 (Subject to change without notice) Page 36 of 71
Continuation:
Designation
Values
Application
Type of valve seal
Valve with Standard seal
Valve with hard seal
Valve with soft seal
Valve with medium-soft seal
This parameter should be
changed only if the valve does
not open with low actuating
values.
(see Troubleshooting)
Characteristic curve of
valve
Typical characteristic curve
Own characteristic curve
Linear characteristic curve
For all standard valve types
For special valves with
known characteristic curves
or for special applications
For high-quality valves that
have flows proportional to the
path of the valve tappet.
Designation
Values
Meaning
Valve protection*
Active
Inactive
This function prevents the
valve from stopping if it is not
actuated for a prolonged
period.
The valve protection program
(if active) is always run if
after 24 hrs the actuating
value has not changed.
In this case, the valve is
completely opened and then
closed.
This procedure is not
indicated on the LEDs.
drive to new valve position
Position always accurate
At change of actuating value >1
%
At change of actuating value >2
%
At change of actuating value >3
%
At change of actuating value >5
%
At change of actuating value >7
%
At change of actuating value >10
%
At change of actuating value >15
%
The valve is re-positioned
each time the actuating value
is changed.
The valve is never re-
positioned until the actuating
value has changed from the
last position by more than the
set value. Enables frequent,
small positioning increments
to be suppressed
Important:
Too high a value can affect
the temperature control.