Testing method for offline operation of Mitsubishi MR-J3 servo driver maintenance board

During the maintenance process of the servo drive, it is common to encounter damaged modules. After repair, the module cannot be installed blindly. Instead, it is necessary to find a way to test the output function of the drive board offline separately. A Mitsubishi MR-J3-350A/3.5KW servo module has exploded, and preliminary detection shows that there are also damaged components in the drive circuit. After repair, the damaged components were replaced. In order to avoid further damage to the module, it is necessary to follow the operation method without installing the module below, The shielding method is shown in the following figure:

Shielding method 1: Connect 300V DC voltage to power boards P2 and N, otherwise an E9 fault will be reported after power on

2: Connect the 10 pins of the module pad hole to N

3: Connect the pad holes U, V, W to N respectively, otherwise AL24 will be reported

4: Connect the pad hole EV EU EW (upper axle drive trigger) to N

After shielding using the above method, connect the motor encoder and set the following parameters before running. The method is as follows:

1: Change PA01 to 0002

2: Change PD01 to 0000

3: Connect the P D on the power board

4: Connect L1 to L11 and L2 to L12 on the power board

If the PD parameters cannot be seen, PA19 can be changed to 000C and power on again.

After the above methods, you can power on and run the servo to test its 6-way waveform.

During the parameter waveform process, the motor shaft can be rotated by hand, and there will be changes in pulse width and phase in the waveform. This machine does not have a static cut-off negative voltage.