Functional Safety - Mitsubishi Electric MR-J5D-G-N1 User Manual

Functional safety

Drive unit specifications
Item
Safety Satisfied standards
performance
Mean time to dangerous failure
(MTTFd)
Diagnostic coverage (DC)
Probability of dangerous Failure per
Hour (PFH)
Mission time (T
*1 When DI/O connection (CN8) is used, diagnosis by test pulses is required in order to satisfy Category 4 PL e, SIL 3.
*2 Although the special proof tests within the mission time of the safety sub-function is not needed to be performed, the suggested
diagnostic test interval in IEC 61800-5-2: 2016 is at least one test per three months for Category 3 PL e, SIL 3.
Function specifications
Item
Safety sub-function STO
*1*2
SS1
SBC
I/O function Input device
Output device
*1 Available functions and safety levels differ depending on the combination of the drive units and the servo motors.
Page 17 List of safety sub-function compatible units
*2 When DI/O connection (CN8) is used, diagnosis by test pulses is required in order to satisfy Category 4 PL e, SIL 3.
*3 A test pulse is a signal which instantaneously turns off a signal to the drive unit at a constant period for external circuits to perform self-
diagnosis.
1 SPECIFICATIONS
16
1.4 Drive unit standard specifications
Specifications
*1
EN ISO 13849-1:2015 Category 4 PL e, IEC 61508 SIL 3, EN 62061 SIL CL 3, EN 61800-5-2
MTTFd ≥ 100 [years] (750a)
DC = Medium, 96.5 [%]
PFH = 3 × 10
*2
) T = 20 [year]
M M
Shut-off response time (STO input off →
energy shut off)
Deceleration delay time
Shut-off response time
Number of inputs
Permissible time for mismatched double
inputs
Noise elimination filter
*3
Test pulse off time
Number of outputs
*3
Test pulse off time
*3
Test pulse interval
-9
[1/h]
Specifications
8 ms or less (when an input device is used)
0 ms to 60000 ms (set by functional safety parameters)
8 ms or less (when an input device is used)
1 point × 2 systems
0 ms to 60000 ms (set by functional safety parameters)
1.000 ms to 32.000 ms (set by functional safety parameters)
1 Hz to 25 Hz
1 point × 2 systems
0.500 ms to 2.000 ms (set by functional safety parameters)
Within 1 s