Installation OpEdge-8D
Release 01 10/2022
9
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.
Shielding ground
The overall shield of a connected shielded twisted pair cable is connected
to the ground connector on the front panel as a conductor.
Beware of possible short circuits when connecting a cable section with
conductive shielding braiding.
Requirements for connecting electrical wires
Before connecting the electrical wires,
always
verify that the
requirements listed are complied with.
All
of the following requirements are complied with:
The electrical wires are voltage-free.
The cables used are permitted for the temperature range of the application case.
The voltage connected complies with the requirements for a safety extra-low voltage
(SELV) according to IEC 60950-1 or ES1 according to IEC/EN 62368-1.
Table 1:
General requirements for connecting electrical wires
All
of the following requirements are complied with:
The voltage connected complies with the requirements for a safety extra-low voltage
(SELV) according to IEC 60950-1 or ES1 according to 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 “Technical data” on page 34.
The cross-section of the ground conductor is the same size as or bigger than the cross-
section of the power supply cables.
Table 2:
Requirements for connecting the signal contact
All
of the following requirements are complied with:
The supply voltage corresponds to the voltage specified on the type plate of the device.
The power supply complies with the requirements as per NEC Class 2.
The power supply conforms to overvoltage category I or II.
The power supply has an easily accessible disconnecting device (for example, a switch or
a plug). This disconnecting device is clearly identified. So in the case of an emergency, it
is clear which disconnecting device belongs to which power supply cable.
The cross-section of the ground conductor is the same size as or bigger than the cross-
section of the power supply cables.
Relevant for North America:
The power cords are suitable for ambient air temperatures of at least +75 °C (+167 °F). The
power cord wires are made of copper.
Table 3:
Requirements for connecting the supply voltage
Summary of Contents for OpEdge-8D
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