A functional earth ground via the grounding screw is required to ensure opti‐
mum noise immunity. The grounding screw is positioned under the control. The
functional earth ground is to be connected via a cable, which is as short as
possible or, better, via a ground strip.
1
①
Grounding screw
Fig.8-8:
Grounding screw, position
Recommended value:
Length: 1 m max.
Cross-section: 6 mm
2
Both the IndraControl L45/L65/L85 and the power and segment terminals are
provided with FE springs (metal clips) at their bottom side, which establish an
electric connection to the top-hat rail. To ensure a reliable ground connection
even in case of dirt or a damaged metal clip, the IndraControl L45/L65/L85 must
be additionally grounded via the FE terminal point, using a conductor with a
cross-section of at least 1.5 mm
2
.
The FE functional earth ground is used for discharging disturbances. It is not
provided as a protection against electric shock for persons.
Voltage Jumper
Starting at the IndraControl L45/L65/L85, the FE (functional earth ground) volt‐
age jumper is routed through all connected Rexroth Inline terminals. This
ensures that these terminals are grounded once the ground connection of the
IndraControl L45/L65/L85, the supply terminals and the top-hat rail has been
properly established.
Potential Equalization
Potential equalization according to DIN VDE 0100 Part 540 must be provided
between the system parts and the voltage supply.
All components of the system are to be connected to the PE protective con‐
ductor system at the connectors that are marked accordingly.
8.3.6
Shield System
General Information
The shielding is intended to reduce any effects of interferences on the system.
Both the PROFIBUS line and the connection lines to terminals for analog sig‐
nals must be shielded.
DOK-CONTRL-ICL45L65L85-PR01-EN-P
Rexroth IndraControl L45/L65/L85 Control
Bosch Rexroth AG
59/81
Installation and Maintenance
