Logic Functions - Festo CAMC-G-S3 Manual

2 Product description of safety module CAMC-G-S3
2.6

Logic functions

2.6.1 Mode selector switch
Use
Use the logic function "Mode selector switch" to switch between various operating
modes / monitoring functions of the safety module.
Example:
In the Normal operation switch position, the system travels normally. It stops when there
is a change to the system, e.g. via SS1.
In the Setting operation switch position, the SLS safety function is activated. However, a
manipulation of the system should not trigger SS1, as setup mode is approved.
The inputs DIN45, DIN46 and DIN47 can be configured as inputs for mode selection. The "Mode select­
or switch" provides three safe logical control signals, LIN_D45_SAFE, LIN_D46_SAFE and
LIN_D47_SAFE, which can be used to switch between various safety functions.
Function
The status of the three inputs DIN45, DIN46 and DIN47 is mapped directly to the safe logical signals
LIN_D45_SAFE, LIN_D46_SAFE and LIN_D47_SAFE.
If the inputs DIN45 ... DIN47 are configured as mode selector switches, then exactly one input must be
High. To achieve this, the logic function executes a 1/N monitoring, with discrepancy time monitoring.
Logical inputs
LIN_D45_SAFE
LIN_D46_SAFE
LIN_D47_SAFE
1) Status until a valid status is detected or if safe analysis of the mode selector switch is not active.
Tab. 2.60 Logical inputs, mode selector switch
106
1)
System start
1
0
0
Normal operation
= LIN_D45
= LIN_D46
= LIN_D47
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Error status
Last valid status