Mitsubishi MELSEC-WS0-CPU0 User Manual page 113

Table 61:
PFHd values WS0-4R0
ATTENTION
Technical data
Safety specific characteristics
All these data are based on an ambient temperature of +40 °C.
Safety integrity level
SIL claim limit
Category
Performance Level
PFD
PFHd at I = 0.75 A, switching
frequency = h -1
(see also Table 61)
B10d value, switching frequency = h
SFF
DC
T (mission time)
M
No. of mechanical switching
operations
Load
I[A] Switching frequency
type
0.1
0.75
AC15
3
5
1
DC13
3
2
AC1
4
In order to reach SILCL3 in accordance with IEC 62061 (see chapter 12), the
following test must be made at least every 365 days:
 The MELSEC-WS safety controller must be powered down.
 The MELSEC-WS safety controller must be powered up.
 All safety functions of the connected safety sensors must be verified.
SIL3 (IEC 61508)
SILCL3 (IEC 62061)
Category 4 (EN/ISO 13849-1)
PL e (EN/ISO 13849-1)
1.6 × 10 -7
–9
1.2 × 10
-1 0.75 A (AC 15)/4,150,000 (see also Table 61)
99.6 %
99 %
Depending on PFHd value, ambient temperature,
load and switching operations (see Table 61)
Min. 200,000
Switching operations
per annum
1/h 8760
1/h 8760
1/h 8760
1/h 8760
1/h 8760
1/h 8760
1/h 8760
1/h 8760
Chapter 12
B10d PFHd
-10
10,000,000 5.00 × 10
4,150,000 1.20 × 10 -09
-08
400,000 1.20 × 10
70,000 7.20 × 10 -08
-09
2,000,000 2.50 × 10
450,000 1.10 × 10 -08
-09
1,000,000 5.00 × 10
600,000 8.40 × 10 -09
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