Operation Manual

Continuous valve actuator CHEOPS control
theben
As of: Jul-11 (Subject to change without notice) Page 43 of 71
4.2 Calibration strategies
2 additional calibration strategies from software V63.
The aim is to enable adjustment to maximum number of different valves.
The selection of the calibration strategy is made via input in the " Strategy for identifying
valve " parameter (Device settings).
4.2.1 Strategy 1, standard
The valve is measured during a calibration run (e.g. after reset) and the "valve open" and
"valve closed" positions are stored. The calibration run is performed twice after download and
the resulting values compared for plausibility. The calibration run is performed until two
successive matching value pairs have been measured. These values are then stored and the
positions used for future runs. The measured values are compared with the stored values
during the calibration run so that the process is only performed once for plausibility.
4.2.2 Strategy 2, Automatic (only for devices from software version 63/
61 drive)
With this option, only the "Open" valve position is calculated during the calibration run. In
order to close the valve, the actuator pushes out the tappet until the set force is exerted on the
valve. The following closing forces are available:
Closing force for
Closing force
Standard valves
approx. 100 N
Valves with high spring tension
approx. 120 N
It is always recommended to use the "normal valve" setting first as this is completely
sufficient for most valves.
The "Valve with high spring tension" setting should only be tried if you cannot close the
valve. This enables the current consumption to be increased to 15 mA during the pressing of
the rubber seal.