Using PID auto/manual assignment (PAU) is possible by defining PID manual reference channel (PIM).
Manual Speed reference can even be assigned to the same input as PID reference.
But bear in mind that the same variable in PID mode represents value of PID setpoint, while in manual mode it represents speed reference in Hz. Switching from auto to manual and opposite is possible while motor is running.
Example:
FR1=AI1 (PID reference)
Feedback = AI2
Auto/manual assignment PAU=DI3
Manual reference PIM=AI1
DI3=0 means PID mode is active. AI1 represents PID reference (range PIP1 - PIP2)
DI3=1 means that manual mode is active. AI1 represents Speed reference (range LSP - HSP)
Manual Speed reference can even be assigned to the same input as PID reference.
But bear in mind that the same variable in PID mode represents value of PID setpoint, while in manual mode it represents speed reference in Hz. Switching from auto to manual and opposite is possible while motor is running.
Example:
FR1=AI1 (PID reference)
Feedback = AI2
Auto/manual assignment PAU=DI3
Manual reference PIM=AI1
DI3=0 means PID mode is active. AI1 represents PID reference (range PIP1 - PIP2)
DI3=1 means that manual mode is active. AI1 represents Speed reference (range LSP - HSP)
Publié pour: Schneider Electric Belgium
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