Technical FAQs

Ask a Question

How is PID programmed on the ATV320 drives?

Issue:
How do you program PID on the ATV320 drives?

Product line:
ATV320, Altivar 320

Environment:
all

Cause:
To maintain pressure, temperature or flow within a system

Resolution:
Using the dial on the display, Push Enter and turn to CONF > FULL > FUN > PID.

Under the PID Regulator menu set:
PIF - PID feedback assignment

PIF1 - Min PID feedback
PIF2 - Max PID feedback
PIP1 - Min PID reference
PIP2 - Max PID reference

PIF - Act. Internal PID ref

RPI - Internal PID ref


Min/Max PID Reference and Feedback are typically set to the range of the transducer.  Act. Internal PID turns on the internal setpoint.  Internal PID ref is the setpoint you want to maintain.  

Example:
You have a transducer, 4-20mA output follows a 0-100PSI range.  You want to maintain 40PSI pressure.  The recommended settings would be:
PIF - AI3 
PIF1 - 0
PIF2 - 100
PIP1 - 0
PIP2 - 100
PIF - yes
RPI - 40

This would maintain 40PSI (10.4mA feedback) in the system based on 4-20mA signal coming into AI3.  
Feedback < 10.4mA will increase motor speed. 
Feedback > 10.4mA will decrease motor speed.
If the VFD reaction needs to be reversed, set PiC, PID correct reverse, to YES.
Was this helpful?
What can we do to improve the information ?