Omron M1 Series User Manual

7-6
Safety Function
7-6-1
Overview of Safety Function
The safety function is designed so that the safety stop function of category 0 (uncontrolled stop) speci-
fied in IEC 60204-1 is used to meet the safety standards of PL-e under ISO 13849-1.
The safe torque OFF (STO) function cuts off the motor current and stops the motor by input signals
from the safety controller.
When the STO function is activated, the servo driver turns servo ready output (READY) OFF to set the
inverter to the safety state.
• STO Function by Safety Input Signal
Safety Functions
Function Standard
STO (Safe Torque Off) EN/IEC 61800-5-2
Stop Category 0 EN/IEC 60204-1
Response Time
Response time Remarks
STO response time 50 ms or
lower
Time from when the SF1/SF2 signal state changes to STO up to
when power to the motor is cut off
EDM response time 50 ms
Time from when the SF1/SF2 signal state changes to STO up to
when the EDM signal state changes to ON
Safety Related Parameters
Parameter Value Standard
PL e EN/ISO 13849-1
EN/IEC 60204-1
Cat 3
MTTFd >62 years
DCavg Medium
Parameter Value Standard
SIL 3 EN/IEC 61508-1 to -7
EN/IEC 61800-5-2
EN/IEC 62061
HFT 1
SFF >90%
PFH
3.00 × 10
-9
PFD
2.00 × 10
-5
Mission time 20 years
7-6-2
Safety Function Settings
Turn OFF the safety function selector switch SW9 when the inverter power supply is turned OFF.
7 Other Functions
7-69
M1 Series Standard Type User's Manual (I669)
7-6 Safety Function
7
7-6-1 Overview of Safety Function

Omron M1 Series Specifications

General

Brand	Omron
Model	M1 Series
Category	Inverter
Language	English