Omron G5 Servo Auto-Tuning
In this article and video, Brad Vorrie, the automation
specialist at here at Ramco shows us how servos provide fast and repeatable
movements for your machines. Processes that if not properly tuned, however,
after prolonged speed can suffer. While the idea of tuning servos can be
intimidating Omron Automations NJ machine controller and EtherCAT servos
utilizing system acts to do make tuning very easy. Let's take a look.
One of the first questions that come up is should you tune
with or without the load. A lot of it depends on the manufacturer software and
how they tune system X. This is very flexible and allows us to enter in the
exact movements, so ideally for best results tune with the load connected. If
you can't tune with load connected for whatever reason you can always initially
tune it without and then retune it with the load later. You may think that
tuning involves entering several parameters into the PID loop which would essentially
be a lot of guessing and checking in reality the process can be much easier.
Let's take a look at the GUI Auto tuning feature and Sysmac
Studio which takes the guesswork out of the tuning process. When online with
the NJ right click and choose online right click again and select Auto tuning.
Read the warning message and press ok choose automatic. Choose your appropriate
device in this case this it would be horizontal ball screw. I usually leave the
default rigidity setting. The top section shows the number of iterations you
want this thing to move. You can move this via a position of instruction or
speed instruction or if you want the drive to move itself choose Sysmac, read
the warning message and press ok. I'm going to choose cyclic step so this thing
will move back and forth. Encoder counts can be entered here and this will be
based off in the encoder count resolution of the motor. That selection shows
you how you want to tune the motor. Press start, the motor should move back and
forth and they will change its gain settings to try and tune itself based off
of the settings that you changed before. Once the criteria is met a message box
will pop up saying it is ready to go. Once satisfied press ok and choose next. Here
are the gain settings at which the drive has chosen press save to EEPROM to save
the values to the drive. Once the values are entered be sure to cycle power under
drive to permanently save those settings as you can see in just a