5
0
1
Parameter Description
Parameter Description
5.46 PID Control (P.170~P.183, P.223~P.225)
P.170 “PID selection”
P.171 “PID feedback control method
selection”
P.172 “PID proportion Gain”
P.173 “PID integration Gain”
P.174 “PID differential Gain”
P.175 “Abnormal deviation level”
P.176 “Exception duration time”
P.177 “Exception handling mode”
P.178 “Sleep detects deviation”
P.179 “Sleep detects duration time”
P.180 “Revival level”
P.181 “Outage level”
P.182 “Upper integral”
P.183 “Deceleration step length of
pressure stability”
P.223 “Analog feedback signal bias”
P.224 “Analog feedback signal gain”
P.225 “Panel command”
During the operation of PID control, the frequency displayed on the screen is the output frequency
of the inverter.
The function of Stall Prevention operates according to the setting frequency before PID control.
Please pay attention to the Gain setting during the process of PID Gain setting for it is possible that
the output current can not be limited absolutely.
Under PID control, the output frequency is also limited between the maximum frequency and the
minimum frequency.
Please refer to the instruction of
P.60
about the input signal filter on terminal 4-5 and terminal 2-5.
The sketch map of PID function is as follows:
s
T
: Sampling period 10ms
Parameter
Factory
Setting
Setting
Range
Remarks
0 PID function non-selected
1
The target value is determined by P.225. The feedback
value is determined by the voltage of terminal 2-5.
170
0
, ,
2
The target value is determined by P.225. The feedback
value is determined by the voltage of terminal 4-5.
0
Negative feedback control. The calculation for the
deviation is target value minors the feedback value.
When an increase in the output frequency will increase
the feedback value, select this setup.
171
0
0,1
1
Positive and feedback control
.
The calculation for the
deviation is feedback value minors the target value.
When an increase in the output frequency will decrease
the feedback value, select this setup.
