Controlling The Filter Stepper Drive - SARAD Aer 5400 Manual

15. 5. Controlling the filter stepper drive

The stepper drive is controlled by three different signals. The meaning and origin of the signals is
expressed in the following table:
Signal DACM-Hardware
SYNC DOUT2
ALARM DOUT1
CLOCK Clock Switch
The filter will be stepped under following conditions:
•
SYNC signal AND ALARM signal
OR
•
SYNC signal AND CLOCK signal
Filter movement in case of detected LLRD activity on the filter
Set the alert levels for exposure or dose to the desired values and mark them as source for alert
generation (configuration window SPEC1). Select alert output DOUT2 instead of DOUT6 as
destination for pending SPEC1 alerts. Please note that the redirection of the alert destination
disables the optical/acoustical alert controlled by DOUT6.
Filter movement at the begin of each new sampling interval
DOUT2 needs to be activated in the cycle definition in parallel with DOUT1 (cycle definition in
dCONFIG)
Filter movement after defined time periods
This function can be realized by the integrated clock switch (CLOCK signal). The configuration of the
clock switch is done by dVISION (instrument setup). At first set the clock switch mode to "periodical"
and after that enter the timing parameters:
Delay
ON period
OFF period
 SARAD GmbH 2023
Meaning
•
Ensures synchronisation with the sampling cycle
•
Will be activated for one second at the begin of each interval
•
Allows the filter movement in case of any detected alert state
of any component
•
Will be controlled by the alert limits and thresholds defined in
the component configuration
•
Performs a logical AND with the SYNC signal to synchronize
stepping if the alert arises asynchronously
•
Clock switch can be configured as periodical timer
•
Enables a time regime independent on cycle timing
•
Performs a logical AND with the SYNC signal to synchronize
stepping if the alert arises asynchronously
0 seconds
1 second
(Filter stepping interval* - 1) seconds
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