Connection to live devices

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HMIs, human machine interfacesET-208Electrical Installation ET-208Connection ofExternal USB devicesConnection in hazardous areaConnection to live devices

 

An external USB device can be connected at terminal X4.

 

The USB device has to meet the requirements for connection to an Ex(e)  interface and must be mounted inside an explosion-protected enclosure.

 

The USB device does require an external power supply to function because it uses over 500 mA.

The USB device is connected to the mains via other interfaces.

 

HMI USB Ex(e) connector

Ex-housing

cable glands

e. g. Ex d housing

USB - device *3

external

power supply

USB_Ex-e_extPw_Typ2-Univers

 

USB cable twisted data wires

Terminals

USB(e) device

Connected to mains via power supply

or other interfaces.

 

*1)

Data cable wires must be twisted right up to terminal.

*2)

Vcc (Pin 1) do not connect !

*3)

e. g hard disc, CD / DVD - drive, Profibus-Interface.

 

See also:

Kapitelseite X4 - USB(e)

Kapitelseite External USB devices

 

 

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