Functional Safety KCD2-SON-Ex*(.R*)(.SP)
Planning
201
8-06
11
3.3
Safety Function and Safe State
Safe State
The safe state of output I and output II is the high impedance state or the fault state.
The fault state is the open circuit. The high impedance state is defined as 0-signal
in respective datasheet.
Safety Function
The safety function has 2 modes of operation:
•
normal operation (output follows input)
•
inverted operation (output inverts input)
The 1-channel devices have 2 outputs where output II may be used in safety-relevant
applications if it is configured to follow output I.
Here are the DIP switch settings for all channels used in safety-relevant applications:
DIP Switch Settings 1-channel Devices
DIP Switch Settings 2-channel Devices
Function
Mode
KCD2-SON-Ex1(.R*)(.SP)
Output mode
Normal operation
S1 position I
Inverted operation
S1 position II
Line fault detection
ON
S3 position I
OFF
1
S3 position II
Table 3.1
1
This switch setting may not be used if the device is used for safety-relevant applications.
Function
Mode
KCD2-SON-Ex2(.R*)(.SP)
Mode channel I
Normal operation
S1 position I
Inverted operation
S1 position II
Mode channel II
Normal operation
S2 position I
Inverted operation
S2 position II
Line fault detection channel I
ON
S3 position I
OFF
1
S3 position II
Line fault detection channel II
ON
S4 position I
OFF
1
S4 position II
Table 3.2
1
This switch setting may not be used if the device is used for safety-relevant applications.
