Digidrive SK Technical Data
27
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10.2 Sample/update times
The sample/update times shown in the control terminal specification within the
Digidrive SK Technical Guide
are the default sample/update times for
the default terminal set-up. The sample/update time depends on the destination/source parameter of the digital or analog inputs/outputs.
These sample/update times are the sample or update times for the control microprocessor. The actual sample/update time maybe slightly longer due
to the design of the Digidrive SK.
10.3 Task routine times
At the beginning of each menu, there is a single line parameter description and this contains the update rate for each parameter. This time signifies
the task routine time in the software that the parameter is updated on. For a background task, the time depends on processor loading i.e. what
functions the drive is carrying out and what advanced menus are being used.
From practical tests carried out:
Update rate
Microprocessor update time
Comments
2ms
2ms
Updated every 2ms
5ms
5ms
Updated every 5ms
21ms
21ms
Updated every 21ms
128ms
128ms
Updated every 128ms
Reset
N/A
Destination/source parameter changed on a Reset
B
Background
Updated as a background task. Update rate depends
on processor loading.
BR
Background read
BW
Background write
Condition
Minimum
Maximum
Average
Time for drive to respond to a run command
4.1ms
5.62ms
5.02ms
Time for the drive to respond to a stop command
2.82ms
3.94ms
3.31ms
Time for the drive to respond to a step change in analog input voltage
7.93ms