Mitsubishi Electric MELSERVO J5 Series User Manual page 34

Functional safety
Functions Detailed functions
Safety sub-function STO (Safe torque off)
(When functional safety
parameters are not used)
STO (Safe torque off)
(When functional safety
parameters are used)
SS1 (Safe stop 1)
SS2 (Safe stop 2)
SOS (Safe operating stop)
SLS (Safely-limited speed)
SSM (Safe speed monitor)
SBC (Safe brake control)
SDI (Safe direction)
SLI (Safely-limited increment)
SLT (Safely-limited torque)
*1 "Ver." indicates the supported firmware version of the servo amplifier. The functions are available on servo amplifiers with the indicated
firmware version or later.
2 FUNCTION
32
2.1 Function list
Description
This servo amplifier supports the STO function
for functional safety as per IEC/EN 61800-5-2.
This allows a safety system to be easily
configured for the equipment.
This function electrically shuts off the servo
motor driving energy with input signals from
external devices (shut-off by the secondary-side
output). This is equivalent to the stop category 0
of IEC/EN 60204-1.
This function starts deceleration with input
signals from external devices. After the
specified time to confirm the motor stop, the
STO function is executed (SS1). This is
equivalent to the stop category 1 of IEC/EN
60204-1.
This function starts deceleration with input
signals from external devices. After the
specified time to confirm the motor stop, the
SOS function is executed (SS2). This is
equivalent to the stop category 2 of IEC/EN
60204-1.
This function monitors whether the servo motor
stops within the prescribed range. Energy is
supplied to the servo motor.
This function monitors whether the speed is
within the prescribed speed limit. If the speed
exceeds the specified speed limit, the STO will
shut off energy.
This function outputs signals when the servo
motor speed is below the prescribed speed.
This function outputs signals for controlling the
external brake.
This function monitors whether the servo motor
travels in the specified direction. If the servo
motor travels in a direction different from the
specified direction, the STO will shut off energy.
This function monitors whether the travel
distance of the servo motor is within the
specified range. If the travel distance of the
servo motor exceeds the specified range, the
STO will shut off energy.
This function monitors whether the torque is
below the specified torque. If the torque
exceeds the specified torque, the STO will shut
off energy.
*1
Ver. Detailed explanation
A0 Refer to "USING STO
FUNCTION" in the following
manual.
MR-J5 User's Manual
(Hardware)
B2 Refer to "FUNCTIONAL
SAFETY" in the following
manual.
MR-J5 User's Manual
(Function)
B2
B2
B2
B2
B2
B2
B2
B2
B2