Inside junction box of the ET / MT-xx6:

Detail of the 24VDC connection:

Device name
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ReaderBox-054-DC-RS232
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HMI ET-/MT-xx6
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Connection
|
Power supply
|
Cable
|
3 x 1 mm²
|
-
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Designation
|
Open cable endX1
|
Terminal X1 (VDC)
|
View
|

|

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Assignments / connections (wire / pin)
|
Wire
|
Signal
|
Pin
|
Signal
|
-
|
-
|
-
|
1
|
+24 VDC
|
1
|
|
+ VDC
|
2
|
+24 VDC
|
-
|
-
|
-
|
3
|
GND
|
2
|
|
GND
|
4
|
GND
|
PE
|
Green / yellow
|
Earth
|
PE
|
Equipotential bonding connection
|
If the X1 terminals are already being used by the optional hard disk, the power supply must be connected in an Ex-certified terminal box outside of the HMI..
If there is no internal hard disk and other devices are to be supplied with 24 VDC, the optional X12 terminal block can be used to distribute the supply voltage.
24VDC at X12 terminal block:

HMI 24VDC power supply
ReaderBox X1

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Because Ex-e and Ex-i signal circuits must not be connected at the same time, any free terminals may only have Ex-e signal circuits connected !
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