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E6581301
F-37
6
H Differential (D) gain
The differential (D) gain set with f366 is the differential (D) gain obtained by PID control.
The differential gain increases the speed of response to rapid changes in deviation. If this gain is set excessively
high, a phenomenon in which the output frequency greatly fluctuates may occur.
If one of input terminals is assigned input terminal function 52/53 (PID differentiation/integration reset), differential
and integral values are always 0 (zero) during the input terminal on.
5) Adjusting the analog command voltage and current
For items which can be adjusted by reference and feedback input, such as voltage/current input (VI/II input),voltage
input (RR/S4 input) and voltage input (RX input), adjust scaling factor of the voltage/current if necessary.
When feedback signals are very low, the gain can be increased by this adjustment.
CKH CKH
(80Hz) (80Hz)
H H
(0Hz) 2V 10V (0Hz) 4mA 20mA
H H H H
20% 100% 20% 100%
CXH H
(80Hz) (80Hz)
H H
(0Hz) 0V 10V (0Hz) 0V 10V
H H H H
0% 100% 0% 100%
High differential gain
Low differential gain
Previous deviation-current deviation
Feedback value
Time
When VI/II used as a voltage input terminal
(Default setting)
When VI/II used as a current input terminal
(H needs to be set to 1)
When RR/S4 used as a voltage input terminal
(Default setting)
When RX used as a voltage input terminal
(Default setting)