Feedback Controlyzer DigiLock 110
Page 24
Status: 5.12.17
Rst (Reset):
Reset PID checkbox: Enables the PID reset.
Reset rate: Slope in Volt/second when resetting the outputs of PID 1 and PID 2
respectively. Finite rates restrict the reset speed of the PID outputs to
avoid destabilization due to rapid changes, e.g. creep of piezos after a
sudden voltage step.
Relock: This option is only available if the Use Window box is checked, since is
relies on the detection of the lock state (see above). When the window
signal is out of bounds, i.e. the system is not locked, the relock option
scans the output channel of the selected PID controller with the chosen
values for frequency and amplitude (waveform type is a symmetrical tri-
angle). Once the window signal is within the specified limits again, the
scan is turned off and the controllers are activated.
Relock: Relock options are enabled with box checked.
Output: Select one output channel to be scanned to relock with the given fre-
quency and amplitude.
Frequency: Frequency of the relock scan.
Amplitude: Amplitude of the relock scan.
NOTE ! The turn-off behavior, i.e. whether the PID controller is reset to its original value when the
lock was initiated can be configured by the user (see section 8.2.5.1).
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