Chapter 8 Using Sto Function; Introduction; Outline; Terms Related To Safety - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

8
USING STO FUNCTION

Precautions

• In the torque mode, the forced stop deceleration function cannot be used.
• When using the STO function in the MR-J5-_G_-HS_, refer to "USING STO FUNCTION" in the following manual.
MR-J5 User's Manual (Function)
8.1

Introduction

This section provides the cautions of the STO function.
For information on implementing functional safety, refer to the following page.
Page 461 USING FUNCTIONAL SAFETY [G] (EXCULUDING MR-J5-_G_-HS_)
For details, refer to "STO function" in the following manual.
MR-J5 User's Manual (Function)
Precautions
• Do not improperly install safety-related components or systems. Installation should be performed by qualified personnel.

Outline

This servo amplifier complies with the following safety standards.
Item
Safety sub-function
Standard

Terms related to safety

The STO function shuts off energy to servo motors, thus removing torque. MR-J5 shuts off the energy by turning off the power
supply electronically in the servo amplifier.
The purpose of this function is as follows.
• Uncontrolled stop according to stop category 0 of IEC/EN 60204-1
• Preventing unexpected restart
Precautions
The following basic safety instructions must be read carefully and fully to prevent injury to persons or damage to property.
Only qualified personnel are authorized to install, startup, repair, or adjust the machines in which these components are
installed.
They must be familiar with all applicable local regulations and laws in which machines with these components are installed,
particularly the standards mentioned in this user's manual.
The staff responsible for this work must be given express permission from the company to perform startup, programming,
configuration, and maintenance of the machine in accordance with the safety standards.
This servo amplifier satisfies the Safe Torque Off (STO) function described in IEC/EN 61800-5-2 by preventing the energy
supply from the servo amplifier to the servo motor. If an external force acts upon the drive axis, additional safety measures,
such as brakes or counterbalances must be used.
MR-J5-_G(4)/MR-J5-_B_/MR-J5W_-_B_/MR-J5-
_A_
STO (IEC/EN 61800-5-2)
EN ISO 13849-1:2015 Category 3 PL e, IEC 61508 SIL
3, EN IEC 62061 maximum SIL 3, EN 61800-5-2
MR-J5-_G(4)-RJ/MR-J5W_-_G
EN ISO 13849-1:2015 Category 4 PL e, IEC 61508 SIL
3, EN IEC 62061 maximum SIL 3, EN 61800-5-2
8 USING STO FUNCTION
8.1 Introduction
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