5.4 Details of Function Codes
5-214
5.4.7 J codes (Application functions 1)
J01
PID Control (Mode Selection)
Under PID control, the inverter detects the state of a control target object with a sensor or the similar device
and compares it with the commanded value (e.g., temperature control command). If there is any deviation
between them, PID control operates to eliminate the deviation. Namely, the closed loop control method is
taken, which matches the control amount (feedback amount) to the target value.
Process controls such as flow control, pressure control, temperature control, and the speed control such as
dancer control are possible.
If PID control is enabled (J01 = 1, 2 or 3), the frequency setting block changes to the PID control block.
Data for J01 Function
0 Disable
1 Process control (normal operation)
2 Process control (inverse operation)
îš„ Mode Selection (J01)
J01 selects the PID control operation and the control block.
3 Speed control (Dancer)
<PID process control outline block diagram>
Fig. 5.4-92
<PID dancer control outline block diagram>
Fig. 5.4-93
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