Proportional Gain (P); Integral Time (I); Derivative Time (D); Pid Offset Adjustment - Omron SYSDRIVE 3G3HV SERIES User Manual

Preparing for Operation
Set Values
• Set the feedback adjustment gain with n085.
• The feedback of the FI terminal multiplied by the feedback adjustment gain will be the feedback adjust-
ment gain data of the Inverter.
n086

Proportional Gain (P)

Setting range 0.0 to 10.0
n087

Integral Time (I)

Setting range 0.0 to 100.0
n088

Derivative Time (D)

Setting range 0.00 to 1.00
Set Values
• The parameters n086, n087, n088 adjust PID control response.
• Set n086, n087, and n088 to optimum values by operating the mechanical system. Refer to page 3-36,
PID Adjustments for details.
• Proportional control or integral control will not be performed if n086 or n087 is set to 0.0 and derivative
control will not be performed if n088 is set to 0.00.
n089

PID Offset Adjustment

Setting range –109 to 109
Set Values
• The parameter n089 adjusts the PID control offset of the Inverter.
• The Inverter adjusts the offset of the voltage used to determine the set point and the offset of analog
input to the FI terminal according to the value set with n089.
• Set n089 so that the output frequency of the Inverter will be 0 Hz when the set point and feedback are
both zero.
n090
Integral Upper Limit
Setting range 0 to 109
Set Values
• The upper limit of integral control quotients is set with n090.
• It is usually unnecessary to change the default-set value of n090.
• Set n090 to a small value if the response of the Inverter may damage the load or allow the motor to go
out of control when the load factor of the motor varies greatly.
• The feedback will not agree with set point if n090 is set to a value that is too small.
n091
PID Primary Delay Constant
Setting range 0.0 to 2.5
Unit Times
Unit s
Unit s
Unit % (Maximum
frequency ratio)
Unit % (Maximum
frequency ratio)
Unit s
Chapter 3
Default setting 1.0
Default setting 10.0
Default setting 0.00
Default setting 100
Default setting 100
Default setting 0.0
3-35