LK-TECH MGv2 Servo Motor System Complete Guide

8.2 Save Parameters

Using the 'SET' button only writes to RAM (lost during power failure), it is necessary to use 'Write to ROM' and restart the power to permanently save.

Experience value: For general gimbal loads, the speed loop Kp can be set to 500-1500, and Ki can be set to 100-300; Set the position ring Kp at 200-800. Specific adjustments need to be made based on the actual mechanical system.

Detailed explanation of control mode (test interface)

On the "Test" page, users can send real-time instructions to verify the motor response.

Mode description range reducer influence

Torque control setting torque current (± 2000), clockwise is positive. 2000~2000 has no impact

Speed control set speed (± 24000 dps). -24000~24000 dps No impact

Multi turn position control 1 sets the absolute angle (± 359999.99 °), and the motor moves at maximum speed. -359999.99~359999.99 ° Actual angle=Set value/i

Multi circle position control 2 is the same as above, but it can limit the movement speed. Same angle, adjustable speed as above

Single turn position control 1 is set to rotate clockwise relative to the zero position from 0 to 359.99 °, with the option to rotate in the opposite direction. 0-359.99 ° actual angle=set value/i

Single circle position control 2 is the same as above, which can limit the speed.  – –

Incremental position control 1 increases the fixed angle (supports positive and negative) with each click. ± 359999.99 ° increments divided by reduction ratio

Incremental position control 2 can limit speed.  – –

Note: All multi turn/incremental position values must be divided by the reduction ratio (i) to obtain the actual motor movement angle. In applications with reducers (such as MG80-16-i6), it is important to pay attention to parameter settings.

Firmware upgrade operation

Hardware/software information can be read through the 'Product' page. Upgrade steps:

Click on 'Open File' and select the firmware file (. bin) that matches the motor model.

Click 'Download' and wait for the writing to complete.

After the upgrade is completed, the motor will automatically recalibrate (alignment needs to be performed again).

Warning: Power off is strictly prohibited during the upgrade process, otherwise the drive may become bricked. The mismatch between firmware and motor model may cause the motor to malfunction, so it is necessary to verify.

Quick Reference Table for Common Malfunctions and Solutions

Possible causes and solutions for the fault phenomenon

Unable to connect to software COM port selection error, baud rate mismatch, driver not installed, check device manager; Ensure the baud rate is 115200 (default); Reinstall CP210x driver

The motor does not rotate, and the LED flash triggering protection (under voltage, over voltage, temperature, communication loss) reads the status and handles it according to the error type; Clear errors or restart

During alignment, the motor experiences severe shaking, excessive load, incorrect number of pole pairs, mechanical jamming, and no-load alignment; Check the pole pair setting; Reduce alignment voltage

Unstable speed control, improper PID parameters, re adjust the speed loop, reduce Kp or increase integration time

Position control overshoot position ring Kp is too large, reduce position ring Kp, or increase speed limit

Communication interference leads to packet loss due to lack of terminal resistance, and unused shielded twisted pair cables are connected to 120 Ω resistors at both ends of the bus; Use twisted pair shielded wires, with the shielding layer grounded at one end

Broadcast mode cannot synchronize ID not set to 1-4, baud rate does not match confirm axis ID 1-4, baud rate 1M/2M (RS-485) or 500K/1M (CAN)