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MELSERVO-JE Series Servo Amplifier


Servo gain adjustment with one-touch ease
Advanced One-Touch Tuning FunctionJE-BJE-A

Servo gain adjustment is complete just by turning on the one-touch tuning function. With this function, machine resonance suppression filter, advanced vibration suppression control II*, and robust filter are automatically adjusted to maximize your machine performance.

* The advanced vibration suppression control II automatically adjusts one frequency.

Servo gain adjustment with one-touch ease

Suppress two types of low frequency vibrations at once
Advanced Vibration Suppression Control IIPatent pending JE-A

The advanced vibration suppression control II suppresses two types of low frequency vibrations owing to vibration suppression algorithm which supports three-inertia system. This function is effective in suppressing residual vibration generated at the end of an arm and in a machine, enabling a shorter settling time. Adjustment is easily performed on MR Configurator2.

Suppress two types of low frequency vibrations at once<

Wide frequency range
Machine Resonance Suppression FilterJE-BJE-A

With advanced filter structure, applicable frequency range is expanded to between 10 Hz and 4500 Hz. Additionally, the number of simultaneously applicable filters is increased to five, improving vibration suppression performance of a machine.

Wide frequency range

High responsivity and stability
Robust FilterPatent pending JE-BJE-A

Achieving both high responsivity and stability was difficult with the conventional control in high-inertia systems with belts and gears such as printing and packaging machines. Now, this function enables the high responsivity and the stability at the same time without adjustment. The robust filter gradually reduces the fluctuation of torque in wide frequency range and achieves more stability as compared to the prior model.

High responsivity and stability

For Changes in Power Supply Environment

Reduce machine downtime
Large Capacity Main Circuit CapacitorJE-BJE-A

The capacity of main circuit capacitor is increased by 20% as compared to the previous model, increasing the tolerance against instantaneous power failure. The increased tolerance reduces machine downtime and then improves productivity.

Reduce machine downtime

Wide power supply voltage input range
Compatible with 1-phase 200 to 240 V AC Inputnew JE-BJE-A

Servo amplifiers of 2 kW or smaller are compatible with power supply voltage of 1-phase 200 V AC to 240 V AC.
* When 1-phase 200 V AC to 240 V AC power supply is used with servo amplifiers of 1 kW and 2 kW, use the servo amplifiers with 75% or less of the effective load ratio.
   The servo amplifiers of 1 kW and 2 kW cannot be mounted closely when 1-phase power is input.

Reduce undervoltage alarms
Instantaneous Power Failure Tough DriveJE-BJE-A

When an instantaneous power failure is detected, this function allows the servo amplifier to use the electric energy charged in the main circuit capacitor in the servo amplifier to avoid an alarm occurrence, increasing the machine availability even with an unstable power supply.

A Variety of Positioning Functions

Easy to set a positioning data
Point Table MethodJE-A

Setting position data (target position), servo motor speed, and acceleration/deceleration time constants in point table is as easy as setting a parameter. Up to 31 points are settable for the point table. The positioning operation is performed with a start signal after selecting the point table No.

Easy to set a positioning data

Easy operation by program
Program Method*JE-A

Create positioning programs with dedicated commands. The positioning operation is performed with a start signal after selecting the program No. The program method enables more complex positioning operation than the point table method. Maximum of 16 programs are settable. (The total number of steps of program: 480)

asy operation by program

Easy to create electronic cam
Simple Cam FunctionJE-A

Various patterns of cam data* can be created easily by using MR Configurator2. Command pulse or point table/program start signal can be used as input to the simple cam. The input command will be outputted to the servo motor according to the cam data.

* Cam curve can be selected from 12 types (constant speed/constant acceleration/5th curve/single hypotenuse/cycloid/distorted trapezoid/distorted sine/distorted constant speed/trapecloid/reverse trapecloid/double hypotenuse/reverse double hypotenuse). For details of simple cam function, refer to in the catalog.

Synchronous operation by encoder signal input
Encoder Following Function/Command Pulse Input Through FunctionJE-A

With the encoder following function, the servo amplifier receives A/B-phase output signal from the synchronous encoder as command pulse, and the input command will be outputted to the servo motor according to the cam data. By setting cam data that matches with sheet length, a diameter of the rotary knife axis, and synchronous section of the sheet; a system in which the conveyor axis and the rotary knife axis are synchronized can be configured. Up to 4 Mpulses/s of input from synchronous encoder is compatible with the servo amplifier.
The command pulse input through function allows the first axis to output A/B-phase pulse from the synchronous encoder to the next axis, enabling a system the second and later axes are synchronized with the synchronous encoder.

Synchronous operation by encoder signal input

Compensating a position gap by sensor input
Mark Sensor Input Compensation FunctionJE-A

The actual position of the servo motor can be obtained based on the inputs from the sensor that detects the registration marks printed on the high-speed moving film. The servo amplifier calculates compensation amounts and corrects position errors of the rotary knife axis based on those inputs from the sensor so that the film can be cut at the set position.

Compensating a position gap by sensor input

Positioning Using Communication Function

Compatible with MODBUS® protocol
Communication Function (MODBUS® RTU)new JE-A

In addition to RS-422 communication (Mitsubishi general-purpose AC servo protocol), RS-485 communication (MODBUS® RTU protocol) is supported.
MODBUS® RTU protocol is compatible with function code 03h (Read holding registers), etc.
Controlling and monitoring the servo amplifier by external devices is possible.

Compatible function code

Compatible with MODBUS

Compatible with MODBUS

While the point table is in operation, the next target position of the point table can be overwritten.

Current position latch

While the point table is in operation, the position data is latched by the mark detection function, and the current position latch function let the controller to obtain the latched data.

Easy Monitoring and Maintenance

Analyze cause of alarm
Large Capacity Drive RecorderPatent pending JE-BJE-A

● Servo data such as motor current and position command before and after the alarm occurrence are stored in non-volatile memory of the servo amplifier. Reading the servo data on MELSOFT MR Configurator2 helps you analyze the cause of the alarm.

● Check the waveform ((analog 16 bits x 7 channels + digital 8 channels) x 256 points) and the monitor values of 16 alarms in the alarm history.

Analyze cause of alarm

Reduce machine downtime incurred by age-related deterioration
Vibration Tough Drive JE-BJE-A

Machine resonance suppression filter is automatically readjusted when a change in machine resonance frequency is detected by the servo amplifier. Losses from the machine stop due to age-related deterioration are reduced.

Support optimal maintenance of driving parts
Machine Diagnosis FunctionPatent pending JE-BJE-A

This function detects changes of machine parts (ball screw, guide, bearing, belt, etc.) by analyzing machine friction, load moment of inertia, unbalanced torque, and changes in vibration component from the data inside the servo amplifier, supporting timely maintenance of the driving parts.

Support optimal maintenance of driving parts

Easy troubleshooting
Three-Digit Alarm JE-BJE-A

MR-JE series displays the alarm No. in three digits to show the servo alarm in more details, making troubleshooting easy.

User-Friendly Motors

Even in severe environment
Improved Environment Safety

HG-KN series and HG-SN series are rated IP65 and IP67 respectively.

* The shaft-through portion is excluded.

Cable leading in both ways
Selectable Cable Leading Direction

The power cable, the encoder cable, and the electromagnetic brake cable are led out to either in direction of or in opposite direction of the load side, depending on the selected cables. (HG-KN series)

Setup Software


Just follow the guidance, and setup is complete
Servo Assistant FunctionJE-BJE-A

Complete setting up the servo amplifier just by following guidance displays. Setting parameters and tuning are easy since related functions are called up from shortcut buttons.

Supporting replacement from conventional system
Parameter Converter FunctionJE-A

With this function, parameter files for MR-E series or MR-E Super series are converted to those for MR-JE-A series.

Just follow the guidance, and setup is complete

Setting and Start-up

Easy and fast parameter setting
Parameter Setting FunctionJE-BJE-A

Display parameter setting in list or visual formats, and set parameters by selecting from the drop down list. Set in-position range in mechanical system unit (e.g. µm). Parameter read/write time is approximately one tenth of the conventional time.

Visible operation and power status
Monitor Function JE-BJE-A

Monitor operation status on the [Display all] window. Check power consumption without any measurement equipment such as electric power meter, assign input/output signals, and monitor ON/OFF status on the [I/O monitor] window.

Visible operation and power status

Servo Adjustment

Tuning is just one click away
One-Touch Tuning Function JE-BJE-A

Adjustments including estimating load to motor inertia ratio, adjusting gain, and suppressing machine resonance are automatically performed for the maximum servo performance just by clicking the start button. Check the adjustment results of settling time and overshoot.

Tuning is just one click away

Fine tuning of loop gain
Tuning Function JE-BJE-A

Adjust control gain finely on the [Tuning] window manually for further performance after the one-touch tuning.

Fine tuning of loop gain

Convenient with overwrite and graph history functions
Graph Function JE-BJE-A

The number of measurement channels is increased to 7 channels for analog, and 8 channels for digital. Display various servo statuses in the waveform at one measurement, supporting setting and adjustment. Convenient functions such as [Overwrite] for overwriting multiple data and [Graph history] for displaying graph history are available.

Graph Function

Analyze the frequency characteristics
Machine Analyzer Function JE-BJE-A

Input random torque to the servo motor automatically and analyze frequency characteristics (0.1 Hz to 4.5 kHz) of a machine system just by clicking the [Start] button. This function supports setting of machine resonance suppression filter, etc.

Analyze the frequency characteristics


For timely parts replacement
Servo Amplifier Life Diagnosis Function JE-BJE-A

Check cumulative operation time and on/off times of inrush relay. This function provides an indication of replacement time for servo amplifier parts such as capacitor and relays.

Find out the aging deterioration of machines
Machine Diagnosis Function Patent pending JE-BJE-A

This function estimates and displays machine friction and vibration in normal operation without any special measurement.
Comparing the data of the first operation and after years of operation helps to find out the aging deterioration of a machine and is beneficial for preventive maintenance.