Instruction Manual PROTECT-PSC
V 2.6R01 / 04.19
2
–8
Structure of safety circuits
Transducer
for example
Emergency off
(emergency stop))
interlocking switch
Pre-control level
for example
PROTECT-PSC
Main control level
for example
Power contactor,
main valves
Drive for hazarders
motions
for example
Drive motors,
lifting cylinders
F
F
i
i
g
g
u
u
r
r
e
e
2
2
-
-
1
1
S
S
a
a
f
f
e
e
t
t
y
y
c
c
h
h
a
a
i
i
n
n
i
i
n
n
p
p
l
l
a
a
n
n
t
t
s
s
/
/
m
m
a
a
c
c
h
h
i
i
n
n
e
e
s
s
The PROTECT-PSC system is therefore only a part or a member of a chain of
safety-related parts of controllers in addition to the transducers (protective
devices), the main control level and the drive part of the machine. The degree of
safety actually achieved will therefore depend on the overall structure of this chain.
It is the responsibility of the user to decide which safety-related measures are to be
realised in the above mentioned parts of a control system.
The provisions laid down in the EC Machine Directive will be applicable here.
Any more detailed recommendations on how the safety-related parts of the control
system are to be structured are to be found in the so-called C-standards (machine
standards) which interpret the EC Machine Directive or, if non-existent or not
applicable, can be determined using the A and B standards (basic safety standards
or safety group standards). Special regulations apply to products specified in
Annex IV of the EC Machine Directive.
Special provisions or deviating regulations also apply to “old” or used machines
which the user should find out about from the competent bodies.
Содержание PROTECT-PSC
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Страница 265: ...Annex 8 Instruction Manual PROTECT PSC V 2 6R01 04 19 8 5 8 3 EC Type Examination certificate ...
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Страница 267: ...Annex 8 Instruction Manual PROTECT PSC V 2 6R01 04 19 8 7 8 5 Index ...