Mitsubishi Electric FR-D700 Instruction Manual page 212

Special operation and frequency control
Parameter
Name
Number
Output interruption
577
cancel level
The above parameters can be set when Pr. 160 Extended function display selection ="0". (Refer to page 157)
∗1
Pr. 129, Pr. 130, Pr. 133 and Pr. 134 can be set during operation. They can also be set independently of the operation mode.
(1) PID control basic configuration
Pr. 128 = "20, 21" (measured value input)
Pr. 133
or terminal 2
Set point
0 to 5VDC
(0 to 10VDC)
(2) PID action overview
1)PI action
A combination of proportional control action (P) and integral control
action (I) for providing a manipulated variable in response to deviation
and changes with time.
[Operation example for stepped changes of process value]
(Note) PI action is the sum of P and I actions.
2)PD action
A combination of proportional control action (P) and differential control
action (D) for providing a manipulated variable in response to
deviation speed to improve the transient characteristic.
[Operation example for proportional changes of process value]
(Note) PD action is the sum of P and D actions.
208
Initial Setting
Value Range
900 to
1000%
1100%
Inverter circuit
+ -
Kp 1+
Terminal 4
Feedback signal (measured value)
Kp: Proportionality constant Ti: Integral time S: Operator Td: Differential time
Description
Set the level (Pr. 577 minus 1000%) at which the PID output interruption
function is canceled.
Manipulated
PID operation
variable
1
+Td S
Ti S
4 to 20mADC (0 to 5V, 0 to 10V)
P action
I action
PI action
P
action
D action
PD action
Motor
IM
Deviation Set point
Measured value
Time
Time
Time
Set point
Deviation
Measured value
Time
Time
Time