schmersal PSC1-C-10 Series, Руководство по установке

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Installation manual
PSC1-C-10 Installation manual V2.6 Page 41 of 173
Version: 57E
For the safety-related assessment of the overall system, it is therefore possible in principle to use the
following diagnostics for the input sensors:
Characteristics
of the input
element Tests that can be configured
/ operative tests
DC Definition of the measure Comment
Cro
ss
-c
ircu
it te
st
W
ith
ti
me
mo
n
ito
ri
n
g
Star
t-
u
p
te
st
in
g
Cyc
lic
te
st i
n
o
p
e
rat
io
n
Single-channel
O O >60
Cyclic test stimulus by dynamic
change of input signals An adequately high test
rate must be ensured
X 90
Cyclic test stimulus by dynamic
change of input signals Only effective if pulse
allocation active
X O O 90-99
Cyclic test stimulus by dynamic
change of input signals DC dependent on
frequency of the start /
cyclic test
DC = 90 test only at
intervals > 4 weeks
DC = 99 test at least 1 x
day/ or 100-times
demand rate
Dual-channel
90
Cross monitoring of input signals
with dynamic test if short circuits
are not
detectable (for multiple
inputs/outputs) With short-circuit fault
exclusion up to DC=99
possible
O O 90-99
Cyclic test stimulus by dynamic
change of input signals DC dependent on
frequency of the start /
cyclic test
X 99
Cross comparison of input signals
with immediate and intermediate
results in the logic (L) and
program execution monitoring in
relation to timing and logic, and
detection of static failures and
short-circuits (with multiple
inputs/outputs) Only effective if pulse
allocation active
X 99
Plausibility check, e.g. usage of
normally open contacts and
normally closed contacts =
antivalent signal comparison of
input elements Only effective in
conjunction with
activated time
monitoring function for
input element
Options:
X: Diagnostic measure activated
O: At least 1 diagnostic measure activated