Sanken S06-4A005-B Instruction Manual page 138

Note 1: When PID control is started once the PID start conditions are satisfied, the PID control will continue even the
second start conditions are not satisfied. However, once the inverter is in stop status and other conditions will
not carry out PID control, the start operation of PID control will be carried out again according to the PID
conditions.
Note 2: When PID command value input switching is F3001/F3101=1, the frequency will be target frequency Ft under
normal mode.
【Formation of PID Control】
F3205 PID onstitution selection
Command value addition calculation PID
F3206
control gain
The function to select the output formation of PID control.
● You can use PID control output directly as the frequency output, you can also add command frequency and PID control output
and use the summation as the frequency output.
● When command frequency is added to PID control output for the frequency output, you can gain the PID control output and then
make an addition calculation.
· F3205=0: Without command value addition calculation
Use the PID control output directly as the frequency output.
· F3205=1: With command value addition calculation
When PID control output is gained by F3206: After command value addition calculation is added to command frequency, it
will be used as the frequency output.
Command frequency
PID output
【End Mode of PID Control】
F3124 PID end mode selection
F3125 PID end setting value
The function to select PID control end mode when inverter stops the acceleration/deceleration.
● When selecting stop deceleration with the following function code, i.e. make a stop without a PID control open loop mode, or the
specified conditions have been satisfied, a open loop mode will be used to stop the deceleration.
· F3124=1: direct end mode.
At the same time of stopping the deceleration, end the PID control forcibly by the open loop mode.
· F3124=2: conditional end mode.
When it starts to stop deceleration and the output frequency of the inverter becomes to be the PID end setting value:
frequency operated by F3125, the PID control will be ended forcibly by the open loop mode.
The conditions of PID control are to make a judgment of the output frequency with the PID end setting value: frequency set by
F3125 comparing to the upper frequency limit: F1007.
Output frequency
PID control open loop control
Gain
: PID control action selection
: PID component selection
PID control end condition
Time
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Output frequency
Output limit
Output frequency
PID control open loop control
Time