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XC77 • XAC77 - Encoder ATEX
5 - Electrical connections
WARNING
Turn off the power supply before connecting the device.
WARNING
If wires of unused signals come in contact, irreparable damage could be caused to the device.
Please insulate them singularly.
Minimize noise by connecting the shield and/or the frame to ground. Make sure that ground is not
affected by noise. The connection point to ground can be situated both on the device side and on
the installation side. The best solution to minimize the interference must be carried out by the
user.
5.1 Minimum cable length
XC77-... and XAC77-... devices are provided with a cable having a minimum length of 3 m in order
to meet the gas protection requirements and thus bear the ATEX marking:
II2 GD Ex d IIC T6 Gb
.
Do not shorten the cable! If this happens, the gas protection level cannot be reached and the ATEX
marking has to be intended as follows:
II2 GD Ex d IIB T6 Gb
(lower gas protection level).
5.2 XC77-…-ZCU…
Function 8-wire I8 type cable
A
Yellow
/A
Blue
B
Green
/B Orange
0 White
/0 Grey
+Vdc
*
Red
0Vdc
Black
Shielding
Shield
* Power supply voltage according to the order code, see the product datasheet.
EXAMPLE
XC77-Y-... 2 ...: 2 = +10Vdc +30Vdc
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