CR1203
17
To avoid contact corrosion on the shield connection of the housing, do not use any copper or
nickel-plated materials for the bolting elements!
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In very corrosive environments such as extremely salty air, use screws with surface finishing on a
zinc/nickel basis with thick-film passivation and sealing.
5.7 Ethernet interface
Communication interfaces are insulated from each other, from other circuits and from touchable
device surfaces with basic insulation according to IEC62368-1 as an external circuit.
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Use a screened CAT5 cable.
STP (Shielded Twisted Pair), to EIA/TIA-568
Length max. 30 m
The max. cable length depends, for example, on the bus topology, the selected operating mode
(10/100 Mbits/s) or the quality of the connectors.
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Use screened connector housings and connect the screen of the Ethernet cable to the connector
housing.
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Do not lay the Ethernet cable in parallel to live cables.
Interference due to external influences
Faulty or insufficient radio interference suppressors in other electrical equipment, such as
inverters or generators, as well as voltage fluctuations when switching on/off electric loads may
lead to problems with the data transmission.
5.8 Analogue video inputs
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If the analogue video inputs are used, use connection cables in STP (shielded twisted pair) or
coaxial cables, versions with 75 ohms impedance.
5.9 USB interfaces
This USB interface is connected to a USB connector in the control panel or in the dashboard. It is
used for the connection of USB 2.0 devices.
The supply of external USB devices via the USB interface is protected against overload and
overvoltage. Max. continuous current: 500 mA
≤ 1,8 m
Fig. 14: USB connection via M12 connector
1:
dialogue module
2:
USB connector, for example, in the control panel or in the dashboard
3:
USB device
