Standards and certifications
98
Mobile Panel 40/50 User's manual V1.80
5.5 Information about MRL 2006/42/EC
Machinery directive
(MD) 2006/42/EC is effective starting 2009-12-29 (without a transitional period). This directive
requires all machines and
safety
components commissioned after this date to comply with the new MD and har-
monized standards.
For handheld
control
devices from B&R, this means that in addition to the new guideline, standard
EN
ISO
13849-1:2008 is also specified (
EN
954-1, which is valid until 2012-12-31 also applies in parallel).
EN
ISO
13849-1
requires the category and performance level (PL) to be specified for the
safety
-relevant "enable
switch
" component
as well as the B
10d
value for the gray stop
switch
. These values are specified in section
or
5.5.1 Which devices have to satisfy the new MD?
Valid for B&R as well as for our customers:
•
The date of applicability of the directive depends on the date the product was brought into circulation. If the
Mobile Panel is delivered to the end user after 2009-12-29, then this is the date the product was brought
into circulation, even if it was sold by B&R at an earlier date.
•
Devices in accordance with the old MD that are received by B&R for repairs
can
still be repaired and
returned according to the old MD.
•
If an old
device
is sent in for repairs, then the same or equivalent
device
will be returned to the customer.
•
Devices for which the new MD applies that are received by B&R for repairs must be repaired and returned
according to the new MD.
5.5.2 Quantitative
safety
specifications for the stop button and release
control
device
(enabling
equipment)
5.5.2.1 Stop button:
B&R provides a B
10d
value. B&R cannot provide other values (e.g. SIL, PL, category).
Reason: B&R provides only the switching element, not an evaluation of it. The customer is responsible for connect-
ing the stop button in their application. The way in which the stop button is implemented in the
machine
determines
the SIL or category with PL for the customer.
The B
10d
value is specified in the user's manual under "Emergency stop or gray stop button" on page .
5.5.2.2 Enabling
control
device
(enabling
device
):
B&R specifies a category and a PL per
EN
ISO
13849-1. This is then used to specify a PFH and MTTF
d
value
per
EN
ISO
13849-1.
This is because the enable
switch
was assessed per
EN
ISO
13849-1. There is no B
10d
value for the enable
switch
since the
switch
consists of the mechanical element and the electronic evaluation. The electronic evaluation means
that B&R specifies the values MTTF
d
and DC as well as the resulting category, PL and PFH for the entire enable
switch
(from the
switch
element to the
terminals
in the connection box).
5.5.3 Relationship between performance level and
safety
integrity level
When assessing
safety
functions per
IEC
61508-1, PL values
can
be translated into SIL values according to table
4 of standard
EN
ISO
13849-1:2015.
Performance level (PL) per
EN
ISO
13849-1
Safety
integrity level (SIL) per
IEC
61508-1
a
No correspondence
b
1
c
1
d
2
e
3
Table 51:
EN
ISO
13849-1:2015, table 4 - Relationship between performance level (PL) and
safety
integrity level (SIL)
