Installation RS20/22/30/32/40
Release 07 10/2021
9
Grounding the device
The device is grounded via the separate ground screw on the bottom left
of the front side of the device.
Use a wire diameter for the ground conductor that is no smaller than
the diameter of the supply voltage connection, however of at least 1.0
mm² (AWG16).
Ground the device before connecting any other cables.
Disconnect the grounding only after disconnecting all other cables.
Shielding ground
The overall shield of a connected shielded twisted pair cable is connected
to the grounding connector on the front panel as a conductor.
Beware of possible short circuits when connecting a cable section with
conductive shielding braiding.
Supply voltage
The supply voltage is electrically isolated from the housing.
The devices are designed for operation with Safety Extra-low Voltage
(SELV). Connect only SELV circuits with voltage restrictions according
to IEC 60950-1 or ES1 according to IEC/EN 62368-1 to the supply
voltage connections and to the signal contacts.
Exclusively connect a supply voltage that corresponds to the type
plate of your device.
Applies exclusively to RS20-..., RS30-..., RS40-... device variants:
For power supply via DC voltage:
All
following prerequisites are
fulfilled:
There are fuses suitable for DC voltage in the positive conductors
of the supply lines, or the voltage sources are appropriately current-
limited. Regarding the properties of this fuse:
See “General
The negative conductors of the voltage inputs are on ground
potential.
For power supply via AC voltage:
All
following prerequisites are
fulfilled:
There are fuses in the supply lines, or the voltage sources are
appropriately current-limited. Regarding the properties of this fuse:
See “General technical data” on page 64.
The power sources are electrically isolated from the ground
potential.