V/f
V/f w/PG Open Loop
Vector
Flux
Vector
24
VS-616G5 Programming Manual
Setting Range:
0.0 to 100.0%
Factory Default:
100.0%
The PID limit value further eliminates oscillations and improves stability. This value is set as a per-
centage of maximum output frequency (E1-04).
Setting Range:
-100.0% to +100.0%
Factory Default:
0.0%
The PID offset adds a bias to the calculated PID value, in order to reduce any offset.
Setting Range:
0.00 to 100.0 seconds
Factory Default:
0.00 seconds
The output delay time is used to delay changes in the calculated PID value, which can prevent oscilla-
tions and improve stability.
Parameters B5-04 and B5-06 to B5-08 are preset at the factory to optimum values for most applica-
tions, hence, do not need to be changed. When tuning a system, first adjust the proportional gain until
oscillations are reduced. Then adjust the integral time so that minimal deviation is achieved as quickly
as possible, without oscillations. Finally, adjust the derivative time to reduce any overshoot at start-up.
The PID output term for the inverter control can be either negative or positive output.
B5-06 PID Control Limit
PID Limit
A
A
A
A
B5-07 PID Control Offset
PID Offset
A
A
A
A
B5-08 PID Control Output Primary Delay Time
PID Delay Time
A
A
A
A
B5-09 PID Output Selection
<1110>
Output Level Sel
A
A
A
A
Setting
Description
0
PID Normal or Forward Output (factory default)
Increase in the manipulated variable when the process variable is larger than
the setpoint and decrease the manipulated variable when the process vari-
able is smaller.
1
PID Reverse or Inverse Output
Increase the manipulated variable when the process variable is smaller than
the setpoint and decrease the manipulated variable when the process vari-
able is larger than the setpoint.
Section B: Application Parameters
B5 PID Control