13. USING STO FUNCTION
13 - 3
13.1.5 Specifications
(1) Specifications
Item Specifications
Functional safety
STO (IEC/EN 61800-5-2)
Safety performance
(Certification standards) (Note 2)
EN ISO 13849-1 Category 3 PL e, IEC 61508 SIL 3,
EN 62061 SIL CL3, EN 61800-5-2
Mean time to dangerous failure
(MTTFd)
MTTFd
≥
100 [years] (314a)
Diagnostic converge (DC)
DC = Medium, 97.6 [%]
Average probability of dangerous
failures per hour (PFH)
[1/h]
6.4 × 10
-9
Number of on/off times of STO
1,000,000 times
CE marking
LVD: EN 61800-5-1
EMC: EN 61800-3
MD: EN ISO 13849-1, EN 61800-5-2, EN 62061
Note 1. This is the value required by safety standards.
2. The safety level depends on the setting value of [Pr. PF18 STO diagnosis error detection time] and
whether STO input diagnosis by TOFB output is performed or not. For details, refer to the Function
column of [Pr. PF18] in section 5.2.6.
(2) Function block diagram (STO function)
Base power
supply for
upper arm
Base power
supply for
lower arm
Shut-off signal (STO1)
CN8
Monitor signal (TOFB1)
Shut-off signal (STO2)
Monitor signal (TOFB2)
Shut-
off
Shut-
off
Servo motor
M
Power
module
(3) Operation sequence (STO function)
STO1/STO2
ON
OFF
ON
OFF
ON
OFF
ON
OFF
0 r/min
(8 ms)
Servo motor speed
EM2 (Forced stop 2)
Magnetic contactor
Base circuit
(Supplying energy to
the servo motor)
Summary of Contents for MR-J4W2-0303B6
Page 39: ...2 INSTALLATION 2 8 MEMO ...
Page 97: ...4 STARTUP 4 20 MEMO ...
Page 181: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Page 235: ...9 DIMENSIONS 9 6 MEMO ...
Page 245: ...10 CHARACTERISTICS 10 10 MEMO ...
Page 309: ...13 USING STO FUNCTION 13 14 MEMO ...
Page 365: ...15 USING A DIRECT DRIVE MOTOR 15 24 MEMO ...
Page 389: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Page 461: ...17 APPLICATION OF FUNCTIONS 17 72 MEMO ...
Page 556: ...APPENDIX App 41 ...
Page 585: ...MEMO ...