Stop Category Defined In En60204-1; How It Works; Safety (Iso 13849-1); Introduction - Omron 3G3MX2 User Manual

E-1

Introduction

E-2

Stop Category defined in EN60204-1

E-3

How it works

The Gate Suppress function can be utilized to perform a safe stop according
to the EN60204-1, stop category 0 (Uncontrolled stop by power removal). It is
designed to meet the requirements of the ISO13849-1, PL=d and IEC61508
SIL 2 only in a system in which EDM signal is monitored by an "external
device monitor".
Category 0: Uncontrolled stop by immediate (< 200 ms) shut-down of the
power supply to the actuators.
Category 1: Controlled stop by interrupting the power supply to the actuator
level if, for example, the hazardous movement has been brought to a standstill
(time-delayed shut-down of the power supply).
Category 2: Controlled stop. The power supply to the drive element is not
interrupted. Additional measures to EN 1037 (protection from unexpected
restart) are necessary.
Interrupting the current to GS1 or GS2, for example removing the link
between either GS1 or GS2 and PLC or both GS1/GS2 and PLC disables the
drive output, i.e. the power supply to the motor is cut by stopping the switching
of the output transistors in a safe way. EDM output is activated when GS1 and
GS2 are given to the drive.
Always use both inputs to disable the drive. EDM output conducts when both
GS1 and GS2 circuits are working properly. If for any reason only one channel
is opened, the drive output is stopped but the EDM output is not activated. In
this case the Safe Disable input wiring must be checked.
Safety function
switch
OFF
OFF ON
(normal)

Safety (ISO 13849-1)

EDM function
switch
ON
(EDM)
Appendix E
379