MELSERVO-J4

Safety Observation Function Harmony with Man

(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

(1) (3) (2) : Supported (SIL 3) : Supported (SIL 2) : Unsupported

IEC/EN 61800-5-2:2007 function

IEC/EN 61800-5-2:2007 function

(1)

(3) (2)

Speed

Speed

Safe torque off (STO)

Safely-limited speed (SLS)

V

The STO function shuts off power to the motor electronically using the internal circuit by responding to the input signal from external equipment (shuts off through secondary-side output). This function corresponds to the Stop category 0 of IEC/EN 60204-1. Safe stop 1 (SS1) Responding to the input signal from external equipment, the motor starts to decelerate. After the set delay time for motor stop is passed, the STO function starts. This function corresponds to the Stop category 1 of IEC 60204-1. Safe stop 2 (SS2) Responding to the input signal from external equipment, the motor starts to decelerate. After the set delay time for motor stop is passed, the SOS function starts. This function corresponds to the Stop category 2 of IEC/EN 60204-1.

This function monitors the motor not to exceed the required speed limit. If the speed exceeds the limit, the motor power is shut off by the STO.

Stop category 0

V

(Uncontrolled stop)

Vmax

Speed

*1

*3

Time

Time

STO signal (Normally closed)

SLS signal

Execute the STO function in servo off state or when the motor is stopped.

Speed

Speed

Safe brake control (SBC) The SBC signals are outputted for external brake control.

V

V

Stop category 1

(Controlled stop)

Speed

SBC output signal (Normally closed)

Time

Time

SS1 signal (Normally closed)

SS1 STO signal (Normally closed)

Speed

Speed

Safe speed monitor (SSM) The SSM signals are outputted when the motor speed is below the specified speed limit.

V

Stop category 2

Vmax

*3

*2

Time

Time

SS2 signal (Normally closed)

SS2

SSM output signal

STO signal (Normally closed)

V: Speed Vmax: User specified speed limit value S1, S2: Specified stop position Function activation area

Speed Position

Safe operating stop (SOS)

S1 S2

Position curve

This function monitors the position of the motor not to deviate from the specified range. Power is still supplied to the motor during the SOS function.

V

*2

Time

*1. SIL 3 when a necessary parameter is set. *2. Requires the use of a servo motor with functional safety. *3. SIL 2 without the use of a servo motor with functional safety.

SOS signal

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