schmersal PSC1-C-10 Series Installation Manual page 73

Installation manual
4.3.4.2.4 Dual-channel switching relay output with external monitoring
For safety applications from PL d according to EN ISO 13849-1, two relays are used in the PSC1-C-10-x
module and two external contactors.
X22
Q4.1
Q4.2
Q5.1
Q5.2
I00
I01
I02
I03
X14
I12
I13
T0
T1
X12
Dual-channel switching relay output with external monitoring –
The two external monitoring contacts are connected in series, supplied with pulse signal T0 and read
by I00 (configured as EMU input). With increased requirements, it is to be noted that at least 1
switching process must take place at least every 24 hours.
Safety instructions:
•
An adequately high test rate is required to achieve PL e according to EN ISO 13849-1.
•
For applications with frequent demand for the safety shutdown, testing should be at short
intervals, e.g. at the start of the shift, 1x per week. However, a test should be undertaken
cyclically at least 1 x per year.
PSC1-C-10 Installation manual V2.6
Version: 57E
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