Programming / parameter assignment
Instruction Manual PROTECT-PSC
V 2.6R01 / 04.19
6-53
6.11
Program examples
For better clarity, the functions ‘START’, ‘END’ and ‘PEND’ are not shown in the
program examples. However, they are always part of the ladder diagram. In a few
examples only excerpts from the overall programs are shown. The missing blocks
are either responsible for a different functionality of the user program or have al-
ready been described in a different program example. The program examples refer
to the corresponding circuitry examples in Chapter 4.3. The reference to the corre-
sponding circuitry example is shown in the left margin.
6.11.1
Manual resetting (Reset, acknowledgement)
If switching-off has been triggered by a safety function, it may be necessary, de-
pending on the evaluation of the risk involved, to reset manually to cancel the shut-
down of the outputs.
Manual resetting
•
must be done through a separate input at the PROTECT-PSC.
•
may not trigger any dangerous movement itself. For this purpose, it is nec-
essary to provide the information on the manual resetting of the operational
control.
•
must be a manual and conscious action ; for example, the person must be
able to see the danger area and he may actuate the button for manual reset-
ting only after checking that there is no one in the dangerous area at that
moment.
•
may only occur through the trailing edge of a previously activated contact
maker.
In the following you will find a program example to manually reset. If necessary,
other details may be taken from the relevant B and C standards..
Example
Reset with edge detection through a physical input.
Description
Resetting only occurs after the button has been released.
Safety categorisation
May be used up to a maximum PL c, Category 2 in compliance with ISO 13849-1.
Program example:
F
F
i
i
g
g
u
u
r
r
e
e
6
6
-
-
4
4
0
0
M
M
a
a
n
n
u
u
a
a
l
l
r
r
e
e
s
s
e
e
t
t
t
t
i
i
n
n
g
g
I007
Summary of Contents for PROTECT-PSC
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Page 265: ...Annex 8 Instruction Manual PROTECT PSC V 2 6R01 04 19 8 5 8 3 EC Type Examination certificate ...
Page 266: ...Annex 8 Instruction Manual PROTECT PSC V 2 6R01 04 19 8 6 8 4 Declarations of conformity W ...
Page 267: ...Annex 8 Instruction Manual PROTECT PSC V 2 6R01 04 19 8 7 8 5 Index ...
