Wiring
Operating Manual PDP67 F 8DI ION PT
1004253-EN-02
15
6.3.2
Example: Dual-channel input devices, without test pulses
Features:
}
This type of connection is mainly used for signal inputs with frequent operation.
}
Depending on the application area and its respective regulations, this connection dia-
gram is suitable for
input devices with frequent operation
and diverse channels in
accordance with EN ISO 13849-1
up to PL e
and EN IEC 62061
up to SIL CL 3
,
provided the functionality of both input device channels is monitored in the user pro-
gram via a
feasibility check
.
}
The input device must be approved for failsafe applications.
}
If you are using input devices with different (diverse) channels, adjacent inputs may be
used. The user program will detect short circuits via the feasibility check.
WARNING!
Short circuits between the cable to the input device and the 24 V line or
between cables to various input devices will not be detected. Depending on
the application, serious injury or death may result.
Avoid short circuits by
– Appropriate wiring
– Wiring in accordance with the requirements of IEC 61076-2-101 and
IEC 60204-1, clause 14.1.1 and 14.1.2
24 V
Dual-channel sensor
with different
(diverse) channels
24 V
Fig.: Please ensure safety regulations and EMC guidelines are met!