schmersal PSC1-C-10 Series, Руководство по установке

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Installation manual
PSC1-C-10 Installation manual V2.6 Page 38 of 173
Version: 57E
4.2 Safety-related characteristic data and circuitry for sensors connected
The PSC1 modules have completely separated signal processing paths for each safety input.
In addition, measures for obtaining the highest possible DC values are implemented.
4.2.1 Digital sensors:
The digital inputs are completely redundant. The details for the categorisation, the DC and the
achievable PL or SIL are listed in the following.
4.2.1.1 Characteristics of the sensors / input elements
I
A
O
A
L
A
I
B
O
B
L
B
m
m
i
i
c
i
m
i
m
Sensor PES Aktuator
S
A
S
B
Dual-channel input element in parallel circuit (cat. 4, fault tolerance 1) with high DC due to signal processing in two channels
and diagnostics using cross comparison in the PES
I
A
O
A
L
A
I
B
O
B
L
B
m
m
i
i
c
i
m
i
m
Sensor PES Aktuator
S
A
=K1
K1
K2
S
B
=K2
Dual-channel input element in series circuit (cat. 4, fault tolerance 1) with low to medium DC due to signal processing in two
channels and diagnostics using cyclic testing
I
A
O
A
L
A
I
B
O
B
L
B
m
m
i
i
c
i
m
i
m
Sensor PES Aktuator
K1
K2
S1
Single-channel input element and dual-channel processing with low to medium DC due to signal processing in two channels
and diagnostics using cyclic testing, PL / SIL dependent on fault exclusions allowed and test rate for the input element.