A customer had a five-axis automatic screw-driving machine. The Mitsubishi servo on the Z-axis was not properly matched with the mechanical components, resulting in a screeching sound. They tried debugging it for three days using one-button user commands, but kept getting errors, with the error code indicating overshoot. Frustrated, the customer requested assistance. An engineer arrived on-site and resolved the issue within 30 minutes. The problem was identified as having two causes: 1) the Z-axis servo parameters were not initial but modified by the customer based on other machines; 2) the Z-axis positioning speed could not be too fast, but the user command method was setting the speed too low, triggering the alarm.
In this case, simply restoring the servo to factory settings and then using the amplifier command method will solve the problem.
Mitsubishi has consistently been a leader in the field of motion control . The powerful performance and ease of use of Mitsubishi's servo products enjoy an excellent reputation among electrical engineers. Today, we'll discuss the one-button adjustment function of Mitsubishi servo products—a feature that electrical engineers will be thrilled with.
When different servo motors are first installed on a machine, they may occasionally experience mismatch with the mechanical components during operation, leading to phenomena such as vibration and noise.
The problem stemmed from a mismatch between the servo motor's rigidity, load-inertia ratio, and other parameters and its mechanical properties. Because many parameters were affected, adjusting them one by one was not only time-consuming but also difficult to guarantee results, a problem that had plagued many engineers for a long time. This changed when Mitsubishi released the MRConfigurator2 servo debugging software.
In the MRConfigurator2 servo debugging software, Mitsubishi developed a "one-click adjustment" function specifically to solve the problem of rigid noise in servo motors. The specific operation is as follows:
1. Set PA08 to 0003 and set the gain adjustment mode to <Manual Mode>. This is to prevent automatic calculation of inertia ratio from failing and triggering alarm C005.
2. Open the "Test Run" menu and then "Positioning Run". Set the speed, acceleration/deceleration, and movement amount according to the actual situation. The movement amount does not need to be set too large. Check "Repeated Run Effective" and "Aging Function Effective". This will enable repetitive reciprocating motion. Then click "Run" to start the motor. The motor will then automatically reciprocate, preparing it for one-click adjustment.
3. Open the "Adjust" menu, then select "One-Click Adjustment" (default is "Basic Mode"). Click the "Start" button (see the image below for details).
The high mode generally corresponds to a lead screw structure, while the basic mode generally corresponds to a synchronous belt structure.
4. After successful tuning, a screen comparing the Mitsubishi servo parameter settings with the initial values will automatically pop up, allowing engineers to see which parameters the software has modified.
The above is the tuning method for user command mode.
Next, we'll discuss the amplifier command mode tuning method.
The amplifier command method is simpler to operate.
Simply set the motor rotation amount according to the number of pulses per revolution to ensure a safe movement range, and then click Start.
The one-click adjustment function significantly reduces the time engineers spend adjusting servo motors, improving efficiency and achieving excellent results. This has been widely praised by engineers in the industrial control field.
Disclaimer: This article is a reprint. If there are any copyright issues, please contact us promptly for deletion (QQ: 2737591964). We apologize for any inconvenience.
