9-3
Commonly used PID control modes
0001b: Forward operation: PID operation enabled, motor speeds increases when feedback signal is
smaller than set-point (most fan and pump applications)
0011b: Reverse operation: PID operation enabled, motor slows down when feedback signal is smaller
than set-point (e.g. level control applications)
To set parameter 10-03:
- After power-up press the DSP/FUN key
- Set Group 10 (PID Control), and select parameter -03 with the UP/DOWN ▲ and ▼ keys and
press the READ/ ENTER key.
Important: To use the PID function parameter 00-05 (Main Frequency Command Source Selection) has to be
set to 5 for PID reference.
9.2 Connect Transducer Feedback Signal (10-01)
The PID function in the inverter
Depending on the type of feedback transducer used, the inverter can be setup for either 0-10V or a
4-20mA feedback transducer.
Feedback Signal from AI2 (10-01 = 2), and set the input current to 4 – 20mA / SW2 = I
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