Mitsubishi Electric MELSERVO-J3 Series User Manual (English)

Other manuals for Mitsubishi Electric MELSERVO-J3 Series

Instruction Manual802 pages

Manual668 pages

Questions and Answers:

S
Samantha PetersonAug 14, 2025
How to troubleshoot when 7-segment LED is not lit or flickers on Mitsubishi Electric Amplifier?
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  jillian29Aug 14, 2025
  The issue might be due to a power supply voltage fault or a faulty servo amplifier, which won't improve even if connectors CN2, CN3, and CN6 are disconnected. It could also be due to a short in the power supply of CN6 cabling (improved when connector CN6 is disconnected), encoder cabling (improved when connector CN2 is disconnected), or CN3 cabling (improved when connector CN3 is disconnected). The encoder itself might also be faulty (improved when connector CN2 is disconnected). Also alarm may occur. In this case remove cause.
A
Anthony CookAug 17, 2025
What to do if large load inertia moment causes the Mitsubishi Electric MELSERVO-J3 servo motor shaft to oscillate side to side?
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  Alyssa LoganAug 17, 2025
  If the servo motor is safe to operate, repeat acceleration and deceleration several times to complete auto tuning.
N
nsalazarAug 21, 2025
What to do if position shift occurs in Mitsubishi Electric MELSERVO-J3?
- D
  David BarkerAug 21, 2025
  Confirm the command position, current position, cumulative feedback pulses and actual servo motor position if position shift occurs due to communication command fault, slipping of machines, etc.
J
Joseph GuzmanAug 25, 2025
What to do if Mitsubishi Electric Amplifier servo motor shaft is not servo-locked (is free)?
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  Dr. James AlvaradoAug 25, 2025
  Check the display to see if the servo amplifier is ready to operate, if the servo-on is not on due to a wiring mistake. Alternatively, check the external I/O signal indication to see if the servo-on signal is ON, in case the interface power supply (24VDC) is not supplied.
A
Alison YoungAug 31, 2025
What to do if rotation ripples are large at low speed on a Mitsubishi Electric Amplifier?
- S
  Stephanie WhiteAug 31, 2025
  If you're experiencing large rotation ripples (speed fluctuations) at low speed with your Mitsubishi Electric Amplifier, it's likely due to a gain adjustment fault. To resolve this, make gain adjustments by increasing the auto tuning response level and repeating acceleration and deceleration several times to complete auto tuning.
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lisawrightSep 3, 2025
What to do if a Mitsubishi Electric MELSERVO-J3 Amplifier experiences position shift?
- S
  Stacy DeanSep 3, 2025
  If your Mitsubishi Electric Amplifier experiences position shift, it could be due to a pulse counting error caused by noise. To address this, confirm the cumulative command pulses, cumulative feedback pulses, and the actual servo motor position.
L
lauren22Sep 6, 2025
Why is the servo motor shaft oscillating side to side in Mitsubishi Electric MELSERVO-J3 Amplifier?
- W
  wwilliamsSep 7, 2025
  If the servo motor shaft oscillates side to side on your Mitsubishi Electric Amplifier, and there is a large load inertia moment, it's likely due to a gain adjustment fault. If it is safe to run the servo motor, repeat acceleration and deceleration several times to complete auto tuning.
S
Stephanie DiazSep 10, 2025
What to do if the servo motor shaft is not servo-locked (is free) in Mitsubishi Electric Amplifier?
- V
  vazquezbrendaSep 10, 2025
  If the servo motor shaft is not servo-locked (is free) on your Mitsubishi Electric Amplifier, it could be due to a couple of reasons. First, check that servo-on (RYn0) is input, ensuring there are no wiring mistakes, and verify the servo amplifier is ready to operate by checking the display. Second, confirm that 24VDC power is supplied to DICOM, and check the external I/O signal indication to see if the servo-on (RYn0) signal is ON.

Mitsubishi Electric MELSERVO-J3 Series Specifications

General

Series	MELSERVO-J3
Feedback System	Incremental encoder, Absolute encoder
Pollution Degree	2
Overvoltage Category	II
Type	Amplifier
Control Method	Sine wave PWM control, current control system
Output Current	Varies depending on the model (e.g., 3.0 A, 5.0 A, 10 A, 20 A, 30 A, 40 A)
Cooling Method	Forced air cooling
Applicable Motor Capacity	0.05 kW to 55 kW
Output Power	Varies depending on the model (e.g., 50 W to 55 kW)
Protection Functions	Overcurrent, overload, overvoltage, undervoltage, regenerative error, encoder error, etc.
Ambient Temperature	0°C to 55°C (32°F to 131°F)
Communication	SSCNET III high-speed serial communication