PE6000 User Manual Description of Function Codes
153
In some situations, only when the PID output frequency is a negative value (AC drive reverse
rotation), PID setting and PID feedback can be equal. However, too high reverse rotation frequency
is prohibited in some applications, and PA-08 is used to determine the reverse rotation frequency
upper limit.
Function
Code
Parameter Name
Setting Range
Default
PA-09
PID deviation limit
0.0%–100.0%
0.01%
If the deviation between PID feedback and PID setting is smaller than the value of PA-09, PID
control stops. The small deviation between PID feedback and PID setting will make the output
frequency stabilize, effective for some closed-loop control applications
Function
Code
Parameter Name
Setting Range
Default
PA-10
PID differential limit
0.00%–100.00%
0.10%
It is used to set the PID differential output range. In PID control, the differential operation may
easily cause system oscillation. Thus, the PID differential regulation is restricted to a small range.
Function
Code
Parameter Name
Setting Range
Default
PA-11
PID setting change time
0.00–650.00s
0.00s
The PID setting change time indicates the time required for PID setting changing from 0.0% to
100.0%. The PID setting changes linearly according to the change time, reducing the impact
caused by sudden setting change on the system.
Function
Code
Parameter Name
Setting Range
Default
PA-12
PID feedback filter time
0.00–60.00s
0.00s
PA-13
PID output filter time
0.00–60.00s
0.00s
PA-12 is used to filter the PID feedback, helping to reduce interference on the feedback but
slowing the response of the process closed-loop system.
PA-13 is used to filter the PID output frequency, helping to weaken sudden change of the AC
drive output frequency but slowing the response of the process closed-loop system.