HV580L Series Frequency Inverter
156
switchover". If the DI is OFF, group 1 (PA-05 to PA-07) is selected. If the DI is ON, group 2 (PA-15 to PA-17) is
selected.
If you select automatic switchover, when the absolute value of the deviation between PID feedback and PID
setting is smaller than the value of PA-19, group 1 is selected. When the absolute value of the deviation
between PID feedback and PID setting is higher than the value of PA-20, group 2 is selected. When the
deviation is between PA-19 and PA-20, the PID parameters are the linear interpolated value of the two groups
of parameter values.
Figure 6-26 PID parameters switchover
PA-21
PID initial value
Default
0.0%
Setting range
0.0%
~
100.0%
PA-22
PID initial value holding
time
Default
0.00s
Setting range
0.00s
~
650.00s
When the AC drive starts up, the PID starts closed-loop algorithm only after the PID output
is fixed to the PID initial value (PA-21) and lasts the time set in PA-22.