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Parameters
F375
Number of PG Input Pulses
F376
Number of PG Input Poles
F381
Simple Positioning Completion Range
F111-F118 (any one)
Simple Positioning
Additional PID Related Commands
Switch to Open Loop Operation
Switching between PID control and open loop operation can be done with a discrete input. Use the PID
Control OFF selection, Input Terminal functions 36 or 37, to switch from PID operation (automatic
operation) to open loop operation (manual operation).
When switching between PID and open loop operation set the manual setpoint equal to the PID setpoint
during the transition in control modes.
Reset the Integral and Differential Gain for
PID Control
The PID Differentiation/Integration Clear function is used to reset the PID control integral gain and
differential gain to the factory default values. Use discrete input terminal function 52.
Display the Process and Feedback Values
Parameters Display Unit Multiplication Factor (F702) and Display Unit Selection (F703) can be used to
modify the ASD display to give a direct reading of the process output.
If F703 is set to 1, the displayed value becomes
[Frequency displayed] × [number specified at F702] = [Value displayed]
Example: Display motor speed for a four-pole motor.
Change the display mode from the default display setting of 60 Hz to display 1800 (rpm) for a 4-pole
motor.
Set F703 to 1 – PID Process Data.
Set F702 = 30.
60 x 30 = 1800
The ASD now displays the calculated motor speed of 1800 instead of the real-time output frequency of
60.
PID Control Manual
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Function
Setting
12 – 9999
2
100
72
7
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