2
018-
06
20
Functional Safety KFD2-RSH-1.2D.FL2, KFD2-RSH-1.2D.FL3
Operation
5.3
Application Examples
5.3.1
Standard Application for Dual Pole Switching
For a switching application, the device has to be attached to the process control system and
the load the following way.
Figure 5.1
Standard application for dual pole switching
In the standard application, the process control system is connected to terminals 7+ and 8-.
The line fault transparency (LFT) of the safety relay must be compatible with the line fault
detection of the process control system output. Terminals 10 and 11 can be used as fault
indication output to the process control system.
The characteristic safety values valid for the standard application can be found in Table 3.1.
KFD2-RSH-1.2D.FL2
7+
8-
10
11
Zone 2
24 V DC
14+
15-
Power Rail
24 V DC
Fault
V
4+
5+
6
3
2-
DTS
