
6
Key:
Notes on wiring:
Additional ground cable
Connect an additional separate ground cable between the ground of the power supply unit
and terminal point 1.1 or 2.1 (GND) of the safety terminal.
Protecting the supply
voltage U
M
Protect the supply voltage. Two options are available:
–
Use a power terminal with fuse for the main circuit
(see "Ordering data: Documentation" on page 11-9). This version is shown in
Figure 6-5.
Replace the fuse that is supplied as standard with a fuse with an l
2
t value of less
than 100 A
2
s and maximum 4 A.
–
If a power terminal with fuse is not used, protect the supply U
M
using an external fuse.
IL
Standard VersaPoint
IL SAFE
Safety-related segment circuit
PWR
Power terminal with fuse or
power terminal with fuse and diagnostics
(see "Ordering data: Documentation" on page 11-9)
Red (bold)
External wiring to the safety terminal
(by the user)
GND*
Separate cable
0.75 mm
2
to power supply unit GND
6-18
User manual IC220SDL840 -
May 2018
GFK-2734