Installation OCTOPUS OS3
Release
03
08/2020
9
use of plastic protection screws is prohibited.
Protection screws and screw caps made of metal are available as an
accessory.
See “Accessories” on page 57.
Grounding the device
Grounding the device is by means of a separate ground connection on the
device.
Ground the device before connecting any other cables.
Disconnect the grounding only after disconnecting all other cables.
The overall shield of a connected power supply cable is connected to the
ground connection on the metal casing as a conductor.
Requirements for connecting electrical wires
Before connecting the electrical wires, always verify that the
requirements listed are complied with.
General requirements for connecting electrical wires
The following requirements apply without restrictions:
The electrical wires are voltage-free.
The cables used are permitted for the temperature range of the application case.
Relevant for North America:
Exclusively use 60/75 °C (140/167 °F) or 75 °C (167 °F) copper (Cu) wire.
Requirements for connecting the signal contact
The following requirements apply without restrictions:
The connected voltage complies with the requirements for a safety extra-low voltage
(SELV) or ES1 as per IEC/EN 62368-1.
The connected voltage is limited by a current limitation device or a fuse.
Observe the electrical threshold values for the signal contact.
See “General data” on page 45.
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