11. TROUBLESHOOTING

Display

Name

Definition

 

 

 

Cause

Action

AL.17

Board error

CPU/parts fault

Faulty parts in the servo amplifier

Change the servo amplifier.

AL.19

Memory error 3

ROM memory fault

 

 

Checking method

 

 

 

 

 

 

 

 

 

 

 

Alarm (A.17 or A.18) occurs

 

 

 

 

 

 

if power is switched on after

 

 

 

 

 

 

disconnection of all cables

 

 

 

 

 

 

but the control circuit power

 

 

 

 

 

 

supply cables.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL.1A

Motor

Wrong combination

Wrong combination of servo amplifier

Use correct combination.

 

combination

of servo amplifier

and servo motor connected.

 

 

error

and servo motor.

 

 

 

 

 

 

 

AL.20

Encoder error 2

Communication

1.

Encoder connector (CN2)

Connect correctly.

 

 

error occurred

 

disconnected.

 

 

 

between encoder and

2.

Encoder fault

Cange the servo motor.

 

 

servo amplifier.

3.

Encoder cable faulty

Repair or change the cable.

 

 

 

 

(wire breakage or shorted)

 

AL.24

Main circuit

Ground fault

1.

Power input wires and servo motor

Connect correctly.

 

error

occurred at the servo

 

output wires are in contact at main

 

 

 

motor outputs (U,V

 

circuit terminal block (TE1).

 

 

 

and W phases) of the

2.

Sheathes of servo motor power

Change the cable.

 

 

servo amplififer.

 

cables deteriorated, resulting in

 

 

 

 

 

ground fault.

 

 

 

 

3.

Main circuit of servo amplifier

Change the servo amplifier.

 

 

 

 

failed.

 

 

 

 

 

 

 

 

 

Checking method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL.24 occurs if the servo is

 

 

 

 

 

 

switched on after disconnecting

 

 

 

 

 

 

the U, V, W power cables from

 

 

 

 

 

 

the servo amplifier.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL.25

Absolute

Absolute position

1.

Reduced voltage of super capacitor

After leaving the alarm occurring for a few

 

position erase

data in error

 

in encoder

 

 

 

minutes, switch power off, then on again.

 

 

 

 

 

 

 

 

 

Always make home position setting again.

 

 

 

2.

Battery voltage low

Change battery.

 

 

 

3.

Battery cable or battery is faulty.

Always make home position setting again.

 

 

Power was switched

4.

Super capacitor of the absolute

After leaving the alarm occurring for a few

 

 

on for the first time

 

position encoder is not charged

minutes, switch power off, then on again.

 

 

in the absolute

 

 

 

 

 

 

Always make home position setting again.

 

 

position detection

 

 

 

 

 

 

 

 

 

system.

 

 

 

 

 

 

 

AL.30

Regenerative

Permissible

1.

Wrong setting of parameter No. 0

Set correctly.

 

alarm

regenerative power

2.

Built-in regenerative brake resistor

Connect correctly

 

 

of the built-in

 

or regenerative brake option is not

 

 

 

regenerative brake

 

connected.

 

 

 

resistor or

3.

High-duty operation or continuous

1. Reduce the frequency of positioning.

 

 

regenerative brake

 

regenerative operation caused the

2. Use the regenerative brake option of

 

 

option is exceeded.

 

permissible regenerative power of

larger capacity.

 

 

 

 

the regenerative brake option to be

3. Reduce the load.

 

 

 

 

exceeded.

 

 

 

 

 

 

 

 

 

Checking method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Call the status display and check

 

 

 

 

 

 

the regenerative load ratio.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Power supply voltage is abnormal.

Review power supply

 

 

 

 

MR-J2S-

CL:260VAC or more

 

 

 

 

 

MR-J2S-

CL1:135VAC or more

 

 

 

 

5.

Built-in regenerative brake resistor

Change servo amplifier or regenerative

 

 

 

 

or regenerative brake option

brake option.

 

 

 

 

faulty.

 

 

 

 

 

 

Regenerative

6.

Regenerative transistor faulty.

Change the servo amplifier.

 

 

transistor fault

 

 

Checking method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11 - 4

Page 231
Image 231
Mitsubishi Electronics MR-J2S- CL specifications

MR-J2S- CL specifications

Mitsubishi Electronics has long been a pioneer in automation and control technology, and one of its prominent offerings is the MR-J2S-CL servo amplifier. Designed to enhance the performance of servo motors, the MR-J2S-CL is a critical component in various applications, ranging from industrial machinery to robotics.

One of the standout features of the MR-J2S-CL is its high-performance control capabilities. This servo amplifier supports both position and speed control, enabling precise movement and responsiveness in dynamic applications. The MR-J2S-CL boasts a sophisticated control algorithm that ensures superior torque response, making it ideal for applications that require quick and accurate motion control.

The MR-J2S-CL employs advanced features such as the Auto-Tuning function, which automatically adjusts the servo settings to optimize performance for the specific load conditions. This automation simplifies setup processes and reduces downtime, allowing users to quickly configure the system to their needs.

In terms of connectivity, the MR-J2S-CL is equipped with various communication options, including the CC-Link and Mitsubishi's own MELSEC communications. These options facilitate seamless integration with other devices and control systems, enhancing the overall interoperability of factory automation setups.

Another critical aspect of the MR-J2S-CL is its built-in safety features. The amplifier includes functionalities like safe torque off (STO) and overcurrent protection, which contribute to the overall safety of the operation. These safety measures are essential in reducing the risk of accidents in environments where human interaction occurs alongside machinery.

The MR-J2S-CL is designed with durability and reliability in mind. It has a robust construction that is capable of withstanding harsh industrial environments, including high temperatures and dust exposure. This resilience ensures a long service life, reducing maintenance needs and operational costs.

Furthermore, the MR-J2S-CL is compatible with a wide range of Mitsubishi servo motors, making it a versatile choice for various applications. Its comprehensive capabilities, combined with user-friendly interface options, allow for easy programming and monitoring of performance.

In summary, the Mitsubishi Electronics MR-J2S-CL servo amplifier stands out for its high-performance control, advanced safety features, and robust design. It effectively meets the demands of various industrial applications, making it a valuable asset in modern automation and manufacturing environments. With its blend of precision, reliability, and flexibility, the MR-J2S-CL continues to be a preferred choice for engineers and manufacturers alike.