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MELSERVO-J4 Series Servo Amplifier

Man

Advanced features for world-class safety

Advanced features for world-class safety

Equipped with the Safety Observation Function

Functions Compliant with IEC/EN 61800-5-2

STO (Safe torque off) and SS1*1 (Safe stop 1) are integrated as standard, enabling the safety system to be configured easily in a machine.

  • · By using STO, it is not necessary to turn off the control power of the servo amplifier, resulting in a shorter restart time and eliminating the necessity of home position return.
  • · A magnetic contactor for preventing unexpected motor start is not needed.*2
  • · The safety level of STO is increased to SIL 3 from SIL 2. *3, 4

Functions Compliant with IEC/EN 61800-5-2

Functions Compliant with IEC/EN 61800-5-2

*1. Safety equipment (MR-J3-D05, safety programmable controller MELSEC QS/WS series, etc.) is required.

*2. For MR-J4 series servo amplifier, magnetic contactors are not required to meet the STO requirements. However, this illustration has a magnetic contactor installed to prevent servo alarms and electric shock.

*3. Servo amplifiers manufactured in Japan in June 2015 or later, or in China in December 2015 or later are required, and a parameter needs to be set.

*4. For Category 3 PL e, SIL 3, use compatible safety equipment and set the parameters. When MR-J3-D05 is used, safety level is Category 3 PL d, SIL 2.

Increasing Safety Level with MR-D30 Functional Safety Unit

Achieving Category 4 PL e, SIL 3

● By wiring to MR-D30 functional safety unit

Safety level is Category 4 PL e, SIL 3 when the safety signals are inputted directly to MR-D30 functional safety unit. The safety observation function is operated on the MR-D30 by parameter setting, and therefore expansion of the safety observation function is possible independent of controllers.

Achieving Category 4 PL e, SIL 3

*1. Requires the use of a servo motor with functional safety.

*2. Safety level is Category 3 PL d, SIL 2 when the servo motor with functional safety is not used.

Achieving Category 4 PL e, SIL 3

● By CC-Link IE Field Network

When MR-J4-GF-RJ is combined with R_SFCPU-SET safety CPU and RD77GF Simple Motion module, MR-J4-GF-RJ receives the safety signal data though CC-Link IE Field Network connected to RD77GF, and thus wiring the safety signals to the I/O of MR-D30 is not necessary.

By CC-Link IE Field Network

*1. Requires the use of a servo motor with functional safety.

*2. Safety level is Category 3 PL d, SIL 2 when the servo motor with functional safety is not used.

Achieving Category 4, PL e, SIL 3 by wiring to functional safety unit

Achieving IEC/EN 61800-5-2 Functions

(1) Functions achievable with MR-J4-GF(-RJ)/MR-J4-B(-RJ)/MR-J4W_-B/MR-J4-A(-RJ)
(2) Functions achievable with MR-J3-D05 and MR-J4-GF(-RJ)/MR-J4-B(-RJ)/MR-J4W_-B/MR-J4-A(-RJ)
(3) Functions achievable with MR-D30 + MR-J4-GF-RJ/MR-J4-B-RJ/MR-J4-A-RJ

Achieving IEC/EN 61800-5-2 Functions

Maintenance Function to Achieve TCO* Reduction*TCO : Total Cost of Ownership

Compliance with SEMI-F47

MELSERVO-J4 series servo amplifier complies with SEMI-F47 standard* corresponding to semiconductors and LCD manufacturing systems. (SEMI-F47 is not applicable to 1-phase 100 V AC, 1-phase 200 V AC, and DC input. To comply with SEMI-F47 with 9 kW or larger servo amplifiers, the dynamic brake is not usable.)

* The control power supply of the servo amplifier complies with SEMI-F47. Note that the backup capacitor may be required depending on the power impedance and operating situation for the instantaneous power failure of the main circuit power supply. Be sure to perform a test on your machine to meet the SEMI-F47 Voltage Sag Immunity Standard. Please use the 3-phase power supply for the servo amplifier input.

Tough Drive Functionnhanced functions

Instantaneous power failure tough drive

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.

Instantaneous power failure tough drive

Vibration tough drive

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.

Vibration tough drive

Large Capacity Drive RecorderPatent pendingEnhanced
 functions

● 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 × 7 channels + digital 8 channels) × 256 points) of the past 16-time alarms in the alarm history.

Large Capacity Drive Recorder

Machine Diagnosis FunctionPatent pending

This function detects changes of mechanical drive components (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 mechanical drive components.

Machine Diagnosis Function

Three-digit Alarm

[Example of an alarm window on MR Configurator2]

[Example of an alarm window on MR Configurator2]

MR-J4 series displays the alarm No. in three digits to show the servo alarm in more details, making troubleshooting easy.

[Three-digit alarm display]

[Three-digit alarm display]

Failure Prediction Function

Failure Prediction Function

MR-J4-GF detects aging-related changes in a machine performance based on the frictions and vibrations monitored by the machine diagnosis function, and informs the maintenance time with a warning. MR-J4-GF also stores the total travel distance of the servo motor and informs the maintenance time with a warning when the total travel distance exceeds the warning limit set by you. When the limit is set to the rated life of a ball screw or bearing, preventive maintenance can be executed according to the actual machine operation.