MELSERVO MR-J2S- /L50132B Error 30: Regenerative error

Servo amplifier and motor · taken from the manufacturer’s manual, pages cited

Fault code30

Regenerative error happens when regenerative power exceeds limits due to mismatched settings or unconnected options. The manual's first action is: “Set correctly.”

Model
MELSERVO MR-J2S- /L50132B
Display shows
Regenerative error (30)
Type
Fault code
Source
Manual p. 108

What 30 means

Regenerative error p. 110

Common causes

  • Permissible regenerative power of the built-in regenerative brake resistor or regenerative brake option is exceeded. p. 110
  • 1. Mismatch between used regenerative brake option and parameter No. 2 setting p. 110
  • 2. Built-in regenerative brake resistor or regenerative brake option is not connected. p. 110
  • 3. High-duty operation or continuous regenerative operation caused the permissible regenerative power of the regenerative brake option to be exceeded. p. 110
  • Checking method p. 110
  • 4. Power supply voltage is abnormal. MR-J2S-: 260V or more, MR-J2S-L: 35V or more. p. 110
  • 5. Built-in regenerative brake resistor or regenerative brake option faulty. p. 110
  • 6. Regenerative transistor faulty. p. 110
  • 1) The regenerative brake option has overheated abnormally. 2) The alarm occurs even after removal of the built-in regenerative brake resistor or regenerative brake option. p. 110

What to do

  1. Set correctly. p. 110
  2. Connect correctly p. 110
  3. ['1. Reduce the frequency of positioning.', '2. Use the regenerative brake option of larger capacity.', '3. Reduce the load.'] p. 110
  4. Call II the status display and check the regenerative load ratio. p. 110
  5. Review power supply p. 110
  6. Change servo amplifier or regenerative brake option. p. 110
  7. Change the servo amplifier. p. 110

Before you service the product, read the safety instructions in the manual p. 2.

If 30 is still not resolved

  • contact service / dealer p. 2
    “Do not attempt to install, operate, maintain or inspect the servo amplifier and servo motor until you have read through this Instruction Manual, Installation guide, Servo motor Instruction Manual and appended documents carefully and can use the equipment correctly.”
  • contact service / dealer p. 3
    “Any person who is involved in wiring and inspection should be fully competent to do the work.”
Open the manual at page 108 All MR-J2S- /L50132B error codes Manual details & download

This page summarises what the manufacturer’s manual says about 30; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with MELSERVO. Found a mistake? Report an error.