Engineering
02/05 AWB2724-1566GB
16
Lighting protection
External lightning protection
All cables routed outside buildings must be shielded. Metal
conduit is best for this purpose. Fit signal cables with overvoltage
protection, such as varistors or other surge voltage protectors.
Where possible, protective elements should be fitted at the point
of entry of the cable into the building, but no further away than
the control panel.
Internal lightning protection
Internal lightning protection covers all measures to reduce the
effects of a lightning strike and the resulting electrical and
magnetic fields on metallic installations and electrical plants.
These measures are:
• Equipotential bonding/earthing
• Shielding
• Using overvoltage protection devices
Please consult the following manuals for advice on cable routing
and shielding measures:
• AWB27-1287 “EMC Engineering Guidelines for Automation
Systems”.
• TB27-001-GB “Electromagnetic Compatibility (EMC) for
Automation systems”.
• TB02-022-GB “Electromagnetic Compatibility (EMC) for
Machinery and Plant”.
Connecting system and field voltage
Connect the system voltage at terminals U
Sys
and GND
Sys
, and the
field voltage at terminals U
L
and GND
L
. Use separate power supply
cabling for the system and field voltage.
You do not need a separate power source for the system and field
supply.
Table 5:
Rated values for the XN-PLC’s system and field voltage
You can connect up to 74 XI/ON modules in slice design to the XN-
PLC. The power consumption of all modules must be less than the
supply current supplied by the XN-PLC. If current consumption is
higher, you can use additional modules for power supply, for
example a bus refreshing module or a power feeding module.
Bus refreshing modules supply the built-in module bus with
5 V DC and the XI/ON modules with 24 V DC.
Power feeding modules supply the XI/ON modules with the field
voltage of 24 V DC. A further module type provides 120/230 V AC.
You can use these modules create groups of different potentials
within the PLC. The 120/230 V AC modules can be arranged
immediately to the right of the XN-PLC.
For configuring the PLC, please refer to manuals “XI/ON: Digital I/
O Modules and Supply Modules” (AWB2725-1533GB) and “XI/
ON Gateways for CANopen” (AWB2725-1530GB).
Figure 14:Terminals for system and field voltage
U
Sys
GND
Sys
U
L
GND
L
Rated system
voltage
24 V DC
0 V DC
Rated field
voltage
24 V DC
0 V DC
U
Sys
GND
Sys
U
L
GND
L
Figure 15:Rating of XI/ON module supply
XN-PLC
XI/ON module bus 1.5 A/5 V DC
XI/ON field voltage 10 A/24 V DC
U
Sys
24 V DC
U
L
24 V DC
Содержание XION-PLC-CANopen
Страница 4: ...2 ...
Страница 8: ...02 05 AWB2724 1566D 4 ...
Страница 10: ...02 05 AWB2724 1566GB 6 ...
Страница 16: ...02 05 AWB2724 1566GB 12 ...
Страница 18: ...02 05 AWB2724 1566GB 14 ...
Страница 34: ...02 05 AWB2724 1566GB 30 ...
Страница 38: ...02 05 AWB2724 1566GB 34 ...
Страница 42: ...02 05 AWB2724 1566GB 38 ...
Страница 48: ...02 05 AWB2724 1566GB 44 ...
Страница 49: ...02 05 AWB2724 1566GB 45 Appendix Dimensions 113 25 114 75 50 6 74 4 ...