Two-Channel Safe Inputs Din40 - Festo CAMC-G-S3 Manual

2 Product description of safety module CAMC-G-S3
2.4.2 Two-channel safe inputs DIN40 ... DIN43 [X40]
Use
The digital inputs DIN40..DIN43 have two channels (DIN40A/B ... DIN43A/B). They serve
the requirement of the safety functions up to Cat. 4 / PL e or SIL3 and thus have an 1oo2
architecture.
To request safety functions, the allocated internal logical inputs are linked with the cor­
responding safety function.
Function
Fig. 2.6 shows the block diagram of an input. The function is explained below for DIN40.
The inputs DIN40 to DIN43 have an identical structure.
DIN40 ... DIN43
DIN40A/41A/...
DIN40B/41B/...
P02.04/09/0E/13
P02.05/0A/0F/14
P02.06/0B/10/15
P02.07/0C/11/16
P02.08/0D/12/17
Fig. 2.6 Block diagram of the two-channel safe inputs
Term/abbreviation
DIN40A/..., DIN40B/...
GLITCH FILTER
LPF
COMPARATOR + TIMER + LOGIC
LIN_x
[5x-x] xxx_ERR
Tab. 2.15 Legend for Fig. 2.6
The signal levels at the inputs DIN40A and DIN40B are first dejammed in a preliminary EMC filter,
("Glitch Filter"). The filter time constant is 500 μs and cannot be parameterised.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
GLITCH
LPF
FILTER
GLITCH
LPF
FILTER
Explanation
Two-channel digital inputs DIN40A/DIN40B ...
Filter for interference
Low-pass filter
Comparator, timer and logic
Logical inputs ...
Internal error signal, error 5x-x
COMPA-
LIN_D40/41/...
RATOR
+
TIMER
[57-0] IO_ERR
+
LOGIC
[57-1] IO_ERR
53