Mitsubishi Electric fr-e700 series, Instruction Manual

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Parameter Special operation
FR-E700 SC EC/ENE 6 - 295
PID control basic configuration
PI action
A combination of P action (P) and I action (I) for providing a manipulated variable in response to de-
viation and changes with time.
I001231E
Fig. 6-146: System configuration when Pr. 128 = 20 or 21 (set/feedback value at the inverter)
Fig. 6-147:
Operation example for stepped changes of
measured value
I000045C
p 1 Td S
1
Ti S
Pr. 133 or
terminal 2
Kp: Proportionality constant; Ti: Integral time; S: Operator; Td: Differential time
Motor
Manipulated
variable
0–5 V DC
(0–10 V DC)
Feedback signal (measured value),
4–20 mA DC (0–5 V DC, 0–10 V DC)
PID operation
Inverter
Set point
Terminal 4
Deviation Set point
Measured
value
P action
I action
PI action