Summary - Mitsubishi Electric MR-J4-TM Instruction Manual

1. FUNCTIONS AND CONFIGURATION
1. FUNCTIONS AND CONFIGURATION

1.1 Summary

CAUTION
The Mitsubishi MELSERVO-J4 series general-purpose AC servo has further higher performance and higher
functions compared to the previous MELSERVO-J3 series.
Multi-network compatible MR-J4-_TM_ servo amplifier can be connected to the network you use by
combining with a network module (Anybus CompactCom M40) manufactured by HMS Industrial Networks.
MELSERVO-J4 series compatible rotary servo motor is equipped with 22-bit (4194304 pulses/rev) high-
resolution absolute encoder. In addition, speed frequency response is increased to 2.5 kHz. Thus, faster and
more accurate control is enabled as compared to MELSERVO-J3 series.
MR-J4-_TM_ servo amplifier operates MELSERVO-J4 series compatible rotary servo motors, linear servo
motors, and direct drive motors.
With one-touch tuning and real-time auto tuning, you can automatically adjust the servo gains according to
the machine.
The tough drive function and the drive recorder function, which are well-received in the MELSERVO-JN
series, have been improved. The MR-J4 servo amplifier supports the improved functions. Additionally, the
preventive maintenance support function detects an error in the machine parts. This function provides strong
support for the machine maintenance and inspection.
The MR-J4-_TM_ servo amplifier supports the Safe Torque Off (STO) function. By combining with optional
MR-J3-D05, the servo amplifier supports Safe stop 1 (SS1) function.
The MR-J4-_TM_ servo amplifier has a USB communication interface. Therefore, you can connect the servo
amplifier to the personal computer with MR Configurator2 installed to perform the parameter setting, test
operation, gain adjustment, and others.
By using CN2L connector, an A/B/Z-phase differential output method external encoder can be connected to
the servo amplifier. In a fully closed loop system, a four-wire type external encoder is connectable as well.
The following table indicates the communication method of the external encoder compatible with MR-J4-
_TM_ servo amplifiers.
To ensure safety of the system against unauthorized access via a network, take
security measures such as using a firewall.
Table 1.1 Connectors to connect from external encoders
Operation mode
Linear servo motor system
Fully closed loop system
Scale measurement function
(Note 3)
Note 1. The MR-J4THCBL03M branch cable is necessary.
2. Connect a thermistor to CN2.
3. This is used with servo amplifiers with software version B0 or later.
External encoder
communication method
Two-wire type
Four-wire type
A/B/Z-phase differential
output method
Two-wire type
Four-wire type
A/B/Z-phase differential
output method
Two-wire type
Four-wire type
A/B/Z-phase differential
output method
1 - 1
Connector
CN2 (Note 1)
CN2L (Note 2)
CN2L
CN2L