Technical data
Mobile Panel 40/50 User's manual V1.80
21
To calculate the PL of the enabling
safety
function, the PL and B
10d
values of the involved components must be
included in the calculation. For details about calculating the PL for the entire
safety
function, see
EN
ISO
13849-1
"Selecting the performance level and category per EN ISO 13849-1" on page 96
2.2.2.2 Reasonably foreseeable misuse of the enable
switch
"Reasonably foreseeable misuse" refers to the unauthorized use of other materials to hold the enable
switch
in the
enable position. This reasonably foreseeable misuse must be minimized.
Warning!
•
The enable
switch
is only suitable as a protective function if the person activating it is able to
recognize danger to personnel early enough to immediately take appropriate action to prevent
it! As an additional measure, reduced speed of the movement may be required. The permissible
speed must be determined by a risk assessment.
•
Using the enable
switch
by itself to issue commands that initiate dangerous states is not per-
mitted. A second intentional start command is required for this (key on
control
device
).
•
The only person permitted in the danger zone is the person actuating the enable
switch
.
•
See chapter
"Standards and certifications" on page 88
for additional important information
regarding the enabling
device
.
Device
with 1 enable
switch
The following measures are therefore recommended for stopping the
machine
during manual operation:
•
Querying the enable
switch
when switching on the
machine
/system and when switching from automatic to
manual mode (the enable
switch
is not permitted to be in position "Enable").
•
Setting up a mechanism whereby the enable
switch
must be released within a predetermined period of time
and only then brought back to position "Enable". The length of this time frame
can
be chosen according
to the
task
at hand.
Device
with 2 enable
switch
es
The following measures are therefore recommended for stopping the
machine
during manual operation:
•
If one of the enable
switch
es is already pressed when switching on manual operation, the enabling
signal
at the output will not be enabled.
•
If an enable
switch
is held down in the enabling position for more than 15 minutes during operation, the
enabling
signal
is canceled. The enabling
signal
is canceled until the enable
switch
is released and pressed
again.
