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HMIs, human machine interfaces ► Panel PC ET/MT-4x6... ► Electrical Installation ► Connection of ► Power supply
Voltage is supplied via the X1 terminals of the HMIs.
Terminal
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Pin
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Meaning
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X1
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1
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Supply voltage HMI +24V DC *1
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2
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3
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Power supply HMI GND (Ground ⏊).
Connected to the electrical bonding.    
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4
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*1)
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Please note the operating data of the devices contained in the Technical Data !
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The technical data is listed on our website:
 https://r-stahl.com > PRODUCTS > Operating and Monitoring Systems > '... - SERIES .00' > '... Device Platform ...' > 'Product Series ...' > 'Product type: ...'
The duplication of the connection terminals is primarily intended for the connection of the optional internal hard disk or the power supply of the SK-LANxx_Tx_USBe.
The port can also be used for the power supply of other devices which meet the requirements of the particular protection zone.
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Both wires of the 24 VDC output cable are clearly labelled.
Wire
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Colour
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Signal name
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Definition
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1
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Black
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+ 24 VDC
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Power supply output +VDC
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2
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Black
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GND
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Power supply output VDC - ground
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In the terminal compartment of the ET / MT-xx6:
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to the supply voltage connection
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DSPq-120-24-block
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Details 24 VDC connection
Unter Berücksichtigung der Gesamtstrombelastung (5A) des DSPq-120-24-block können weitere Geräte durch das Netzteil versorgt werden, wenn
•Die Rangirrung in einem geeigneten Klemmenkasten erfolgt, •pro Klemme nur eine Ader unter geklemmt ist bzw. mehrere Adern in einer Aderendhülse verpresst sind, •im Klemmenkasten nur Leitungen gleicher Zündschutzart verschaltet werden.
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Warning
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Explosion hazard, when connecting device in hazardous area !
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If you have to connect the device in a hazardous area
you must use a suitable explosion-protected terminal box !
(for example a series 8118 terminal box).
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Add a label to the switch boxes like follow:
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Caution
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Explosion hazard, Do not open !
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Isolate supply and all Ex e and Ex i circuits, wait 25 minutes before opening switch boxes or connection !
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Notice
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We advise against cascading the 24 VDC by means of the X1 terminals inside the HMIs,
since the circuits can then only be traced by opening the HMIs !
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 Anschluss DSPde-100-24, Anschluss des Netzteil 90 – 264 VAC, frühere Netzteilvariante
The DSPde-100-24 devices are fitted with a fixed connection cable for the HMIs and an Ex-e terminal box.
Wiring
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The length of the connection cable of the enclosure and the terminal box is 0.5 m !
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Terminal
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Colour
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Signal name
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Definition
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L
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Brown
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L1
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Voltage supply of 230 VAC, Phase
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N
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Blue
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N
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Voltage supply of 230 VAC, Ground and neutral
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PE
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Green/Yellow
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Earth
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Protective earth
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The length of the connection cable to the HMI is 2 metres !
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Colour
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Signal name
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Definition
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X1-HMI
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Braun
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+24 VDC
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Voltage supply of +24 VDC
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1
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Blau
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0 V (GND)
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Voltage supply of 0 VDC (GND)
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3
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Grün/Gelb
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Earth
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Protective earth
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PA
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 Connection, DSPde-100-24 View
Connection, Ex-e terminal box 8118/112-0:
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Ex-e terminal box
230 VAC supply
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Power supply
230 VAC
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