Chapter 1 Functions And Configuration - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

1
FUNCTIONS AND CONFIGURATION
1.1
Summary
The Mitsubishi Electric general-purpose AC servo MELSERVO-J4 series have further higher performance and higher
functions compared to the previous MELSERVO-J3 series.
MR-J4-_GF_ servo amplifier can be connected to controllers, such as a simple motion module on CC-Link IE Field Network.
CC-Link IE Field Network is an open network using Ethernet (1000BASE-T), allowing high-speed and large-capacity
communication. A communication speed of 1 Gbps achieves high-speed control of field devices and high-speed
communication between facilities, thus shortening operating cycle.
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-_GF_ servo amplifier operates MELSERVO-J4 series compatible rotary servo motors, linear servo motors, and direct
drive motors as standard.
With one-touch tuning and real-time auto tuning, you can easily 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.
MR-J4-_GF_ 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 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.
In the MELSERVO-J4 series, servo amplifiers with the CN2L connector are also available as MR-J4-_GF_-RJ.
By using the CN2L connector, an A/B/Z-phase differential output type 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-_GF_ and MR-J4-_GF_-RJ servo amplifiers.
Operation mode
Linear servo motor system
*5
Fully closed loop system
Scale measurement function
*1 The MR-J4THCBL03M branch cable is necessary.
*2 The MR-J4FCCBL03M branch cable is necessary.
*3 When the communication method of the servo motor encoder is four-wire type, MR-J4-_GF_ cannot be used. Use an MR-J4-_GF_-RJ.
*4 Connect a thermistor to CN2.
*5 This is used with servo amplifiers with software version A1 or later.
1 FUNCTIONS AND CONFIGURATION
18
1.1 Summary
External encoder
communication method
*5
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
*5
Two-wire type
Four-wire type
A/B/Z-phase differential output
method
Connector
MR-J4-_GF_
*1
CN2

*2*3
CN2

*2*3
CN2

MR-J4-_GF_-RJ
*1
CN2
*4
CN2L
CN2L
CN2L