Installation manual
Page 36 of204
4.2.1.4.4 Dual-channel sensor with time-out and cross-shorting test
Cross-shorting as well as connections to DC 24 V and DC 0 V can be detected by using two
independent clock signals on the homogeneous sensor.
Only normally closed contacts should be used for safety related applications.
PI d or higher acc. to EN 13849-1 can be achieved when using sensors / switching elements
with fault exclusion for not opening the switch contacts. This is permissible when using
positively disconnecting switches with correct constrained actuation. The use of sensors with
self-monitoring output contacts is also permitted.
DI1
DI2
DI3
DI4
DI13
DI14
P1
P2
X14
.
.
.
L+
L-
P2
P1
X12
Figure: two-channel sensor, homogeneous with clock
Safety note:
Pl d or higher in accordance with EN ISO 13849-1 is achieved by using switching
elements / sensors with positively actuation
When using two independent sensors with independent actuation, PI d or higher acc.
to EN ISO 13849-1 can be achieved.
When using common elements in the actuation chain, an fault exclusion is required for
this purpose. The corresponding limitations and criteria acc. to EN 13849-1 must be
observed.
Summary of Contents for PSCBR-C-10 Series
Page 1: ...Installation manual Page 1 of204 Installation Manual For PSCBR modules Series PSCBR C 10...
Page 178: ...Installation manual Page 178 of 204...
Page 181: ...Installation manual Page 181 of 204 Example for a risk analysis Gefahrenanalyse Risk analysis...
