Page 18
DEAD BAND
Factory setting:
AUTO DB value: 1%
MANU DB value: 1%
The system does not adjust the valve stroke when the gap between the stroke value and the position set-point value is not
bigger than the dead band value.
The dead band value is divided into automatic dead band value and manual dead band value options. The automatic dead band
value corresponds to limited scale of the valve stroke. The dead band range is 0.1%-10%.
Use the arrow keys to scroll to DEAD BAND and press the ENT key to open the selection menu. Use the arrow keys to navigate
to a specific function. Use the SET key to set the desired feature. Click the arrow keys to adjust. Press the OK key to save and
the EXIT key to return to the main menu.
Figure 19. Operating sequence DEAD BAND
NOTE: The smaller the dead band setting, the higher the control accuracy. Do not set the DEAD BAND value smaller than
required in the application, since it may result in instability.
SAFEPOS
Factory setting:
SAFEPOS value: 0%
This function is used to set a safety position which the valve stroke will default to under specified conditions. The safety position
is initiated by an error signal for set-point value. When the adjustment for the safety position is enabled, the sign “safe pos” is
displayed on the operating interface.
Use the arrow keys to scroll to SAFEPOS and press the ENT key. Use the SET key to set SAFEPOS %. Click the arrow keys to
adjust. Press the OK key to save. Press the EXIT key to return to the main menu.
Figure 20. Operating sequence SAFEPOS
To Next Page
Loading...
Need help?
General
