Delta Electronics AC Motor Drive VFD-E - Manual (Page 186)

Chapter 4 Parameters|
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 4-133
NOTE
The parameter can be set during operation for easy tuning.
10.03 Integral Time ( I ) Unit: 0.01
Settings 0.00 to 100.0 sec Factory Setting: 1.00
0.00 Disable
This parameter specifies integral control (continual sum of the deviation) and associated gain
(I). When the integral gain is set to 1 and the deviation is fixed, the output is equal to the input
(deviation) once the integral time setting is attained.
NOTE
The parameter can be set during operation for easy tuning.
10.04 Derivative Control (D) Unit: 0.01
Settings 0.00 to 1.00 sec Factory Setting: 0.00
This parameter specifies derivative control (rate of change of the input) and associated gain
(D). With this parameter set to 1, the PID output is equal to differential time x (present
deviation − previous deviation). It increases the response speed but it may cause over-
compensation.
NOTE
The parameter can be set during operation for easy tuning.
10.05 Upper Bound for Integral Control Unit: 1
Settings
0 to 100 %
Factory Setting: 100
This parameter defines an upper bound or limit for the integral gain (I) and therefore limits the
Master Frequency.
The formula is: Integral upper bound = Maximum Output Frequency (Pr.01.00) x (Pr.10.05).
This parameter can limit the Maximum Output Frequency.