Mitsubishi Electric Melsec-QS Series Safety Application Manual page 30

Safety programmable controller
Hide thumbs Also See for Melsec-QS Series:
Table of Contents

Advertisement

4
PRECAUTIONS FOR USE OF SAFETY PLC
Input
Emergency stop switch
Figure4.2 Example when using one QS0J65BTS2-8D and one QS0J65BTS2-4T
4
4.1 Precautions for Designing Safety Application
- 3
(b) When using one QS0J65BTS2-8D and one QS0J65BTS2-4T
PFD
= (PFD of A) + (PFD of B) + (PFD of C) + (PFD of D)
=(1.39
10
) + ((1.68
-4
= 1.73
10
+ (PFD of C) + (PFD of D)
-4
PFH
= (PFH of A) + (PFH of B) + (PFH of C) + (PFH of D)
=(4.95
10
) + ((7.46
-9
= 6.44
10
-9
+ (PFH of C) + (PFH of D)
10
) + (1.68
10
)) + (PFD of C) + (PFD of D)
-5
-5
10
) + (7.46
10
)) + (PFH of C) + (PFH of D)
-10
-10
Output
Safety relay

Advertisement

Table of Contents
loading

Table of Contents