MELSERVO-J4

Safety Observation Function Harmony with Man

Advanced features for world-class safety

Safety observation function

Expanded safety observation function with MR-D30

Category 4 PL e, SIL 3 STO/SS1 SS2/SOS/SLS SBC/SSM

Direct wiring

Via network

STO/SS1 with MR-J3-D05

STO as standard specification

Category 3 PL d, SIL 2 STO/SS1

Category 3 PL e, SIL 3 STO

HG-KR_W0C HG-SR_W0C HG-JR_W0C

MR-D30 + MR-J4-GF-RJ MR-J4-B-RJ MR-J4-A-RJ

MR-D30 + MR-J4-GF-RJ

MR-J3-D05 + MR-J4 series

MR-J4 series

Equ i pped wi t h t he Sa f e t y Obse rva t i on Func t i on

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

[Shut-off by STO]

[Shut-off by STO and SS1]

Molded-case circuit breaker (MCCB)

Molded-case circuit breaker (MCCB)

Shut-off

Safety relay circuit

Magnetic contactor for preventing unexpected start is no longer required.

Magnetic contactor for preventing unexpected start is no longer required. Magnetic contactor (MC) for servo alarm* 2

Magnetic contactor (MC) for servo alarm* 2

Safety equipment MR-J3-D05, safety programmable controller MELSEC QS/WS series, etc.

SS1 signal

Servo amplifier

Servo amplifier

Stops motor

Stops motor

Servo motor

Servo motor

IEC/EN 61800-5-2:2007 function

Safety level

STO (Safe torque off) SS1 (Safe stop 1) * 1

Category 3 PL e, SIL 3 * 3, 4

*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.

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