Mitsubishi troubleshooting answers
9 questions with answers cited from the manufacturer manuals.
- 0Mitsubishi MR-J5 AL.052 after maintenance, what to check first?
The AL.052 alarm on a Mitsubishi MR-J5 servo amplifier indicates an excessive error, meaning the droop pulses exceeded the alarm occurrence level. This alarm can occur during acceleration, when an axis is blocked, or if …
- 0Mitsubishi MR-J5 AL.016 at power-up, what to check first?
Alarm AL.016 on a Mitsubishi MR-J5 servo amplifier indicates an Encoder initial communication error 1, meaning there's a communication issue between the encoder and the servo amplifier at power-up. This can occur after r…
- 0Mitsubishi MR-J4 AL.52: Error excessive after wiring work, what to check?
The AL.52 alarm on a Mitsubishi MR-J4 servo amplifier indicates an excessive following error, meaning the difference between the commanded and actual position has exceeded the alarm level. This often occurs during accele…
- 0Mitsubishi MR-J4 AL.51 during operation, what to check first?
The AL.51 Overload 2 alarm on a Mitsubishi MR-J4 servo amplifier indicates that the maximum output current flowed continuously. This typically happens during operation if the axis collides with an obstruction or the torq…
- 0Mitsubishi MR-J4 AL.50: Overload 1 during operation, motor turns poorly, what to check?
Alarm AL.50 on a Mitsubishi MR-J4 servo amplifier indicates Overload 1, meaning the load exceeded the amplifier's overload protection characteristic. If this occurs during operation and the motor turns poorly, it suggest…
- 0Mitsubishi MR-J4 AL.33 Overvoltage during deceleration, what to check?
The AL.33 Overvoltage alarm on a Mitsubishi MR-J4 servo amplifier indicates the DC bus voltage has exceeded its prescribed limit. When this fault occurs specifically during deceleration, it often points to an issue with …
- 0Mitsubishi MR-J4 AL.25: Absolute position erased after battery replacement, what to check?
The AL.25 alarm on a Mitsubishi MR-J4 servo amplifier indicates that the absolute position data has been erased or is faulty. This can occur after initial power-up in an absolute position detection system, or if the batt…
- 0Mitsubishi MR-J4 AL.20: Encoder normal communication error 1 while running, what to check?
The AL.20 alarm on a Mitsubishi MR-J4 servo amplifier indicates an encoder normal communication error 1, meaning an error occurred in the communication between the encoder and the servo amplifier after start-up. This typ…
- 0Mitsubishi MR-J4 AL.16: Encoder initial comm error 1, what to check first?
Alarm AL.16 on a Mitsubishi MR-J4 servo amplifier indicates an Encoder initial communication error 1. This means an error occurred during the initial communication between the encoder and the servo amplifier, typically a…