Automatic Tuning Function - Panasonic VF200 Instruction Manual

Appendix Function Parameter List
Proportional-derivative precedence type PID control: generally speaking,
Upward/downward direction (negative operation/positive operation) of the
·
output can be selected when the process changes.
Negative operation: the output is increased with the measured value (PV)
decreased.(For example: heating air)
Positive operation: the output is increased with the measured value (PV)
increased.(For example: cooling air)

■ Automatic tuning function

Through automatic tuning, the inverter will calculate the optimum values of
·
proportional gain (Kp), integral time (Ti) and derivative time (Td) required by
PID control, and set the speculated results to parameters automatically.
The switch setting for automatic tuning function can be set with setting data "A0"
to "A3".
Refer to operation procedures of automatic tuning on page 250.
Before performing automatic tuning, allowable ranges of the motor and
·
machine must be confirmed.
Related parameters: P107 to P111, P124 to P127, P157
224
when the setting value
(SP) is changed, output
variation will decrease
and convergence will
slow down.