Inovance MD800 Series - Page 318

Parameter Group
-317-
Description
When the frequency source is "PID only", the PID cut-off frequency in reverse direction is the
minimum value of the current PID output. When the frequency source is "main + PID", FA-08 takes
into account the "main + PID" as a whole and outputs the minimum frequency value calculated
through the "main + PID" operation.
FA-09
PID deviation limit
Address:
64009
Min.:
0.0
Unit:
%
Max.: 100.0 Data type: UInt16
Default:
0.0
Change:
At once
Value Range:
0.0% to 100.0%
Description
When the deviation is within the PID deviation limit, no adjustment is required. This parameter helps
balance the accuracy and stability of the system output.
FA-10
PID derivative limit
Address:
64010
Min.:
0.00
Unit:
%
Max.:
100.00
Data type:
UInt16
Default:
0.10
Change:
At once
Value Range:
0.00% to 100.00%
Description
This parameter defines the PID derivative output range. In PID control, the derivative may easily cause
system oscillation. Therefore, the PID derivative action is restricted to a small range.
FA-11
PID reference change time
Address:
64011
Min.:
0.00
Unit:
s
Max.: 650.00 Data type: UInt16
Default:
0.00
Change:
At once
Value Range:
0.00s to 650.00s
Description
This parameter defines the time required for the PID reference to change from 0.0% to 100.0%.
FA-12
PID feedback filter time
Address:
64012
Min.:
0.00
Unit:
s
Max.: 60.00 Data type: UInt16
Default:
0.00
Change:
At once
Value Range:
0.00s to 60.00s
Description
This parameter defines the filter time of PID feedback. The filter helps to reduce interference on the
feedback but lowers the responsiveness of the process closed-loop system.
FA-13
PID deviation gain
Address:
64013