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10-7. Actuator adjustment of ON-OFF servo type
If the output format is ON-OFF servo type, the controller and the actuator (motor etc.) should be adjusted. Do
the adjustment basically by auto adjustment. Fine adjustment can be done manually also, however if you are
using it for the first time, use the automatic adjustment first and then the manual fine adjustment.
When auto
adjustment is not performed, output value of output display screen and feedback value have a margin of error.
1.Auto adjustment
①
Initializing the setting value
・
Before the adjustment, consider the setting value of 'FB dead band' of mode 4 as the initial value.
・
For initial value, the dead band becomes 1.0%.
・
Other than that for output in the range of 0-100%, confirm each parameter.
②
Zero span adjustment
・
Select 'START' in 'FB tuning' of mode 4, click
key and start FB tuning, and then adjusted data of feedback
which is displayed at output display screen is initialized.
・
The actuator automatically runs on
side and
side and calculates
the zero span value automatically.
・
When FB tuning is completed, return to 'END'.
・
The automatically calculated zero span value is automatically registered in 'FB zero span' of mode 4 hence
confirm it.
③
Dead band adjustment (Gain adjustment)
・
See
⑤
of “Manual adjustment”.
If the movement of actuator is delayed too much, auto calculation by 'FB tuning' is not possible. In that case
after a fixed period return to 'END' and zero span value is not registered.
2.Manual adjustment
①
Initializing the setting value
・
Before the adjustment, return the setting value of 'FB dead band' and 'FB zero span' of mode 4 to initial
value.
・
Initial values are zero is 0.0%, span is 100.0% and dead band is 1.0%.
・
Other than that for output in the range of 0-100%, confirm each parameter.
②
Zero adjustment
・
Perform manual output operation (manual output) and set the output value to 0.0%.
・
Actuator scales out on
side.
・
Increase the output value by 0.1% every time and request an output value that erases
display.
③
Span adjustment
・
Similarly the output value is set to 100.0%.
・
Actuator scales out on
side.
・
Decrease the output value by 0.1% every time and request an output value that erases
display.
④
Registering zero span value
・
Set the output value requested in
②
and
③
, in 'FB zero span' of mode 4 respectively.
⑤
Dead band adjustment (Gain adjustment)
・
Successively, similarly set the output value to 50.0%.
・
Increase the setting value a little every time in 'FB dead zone' of mode 4 and request a setting value that
erases both the displays of
and
of the operation screen.
・
Perform a trial operation, increase the setting value little by little until the range where there is no
error in controllability and set the greatest value as the settings value of final 'FB dead band'.
Содержание KP 2000 Series
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