MR TAPCON 230 Montageanleitung Seite 30

NOTICE
30
Mounting 7820658/06 EN
– Line routing in accordance with EMC requirements (separation of lines
which cause interference and those susceptible to interference)
– Optimum shielding (metal housing)
– Overvoltage protection (lightning protection)
– Collective grounding (main grounding rail)
– Cable bushings in accordance with EMC requirements
– Any contactor coils present must be interconnected
– The device's connection cables must be laid in close contact with the
grounded metal housing or in metal cable ducts with a ground connection.
– Signal lines and power lines/switching lines must be laid in separate cable
ducts.
– The device must be grounded [►Section 5.4.12.2, Page 39] at the screw
provided for this using a grounding cable.
5.4.3 Connecting cables to the system periphery
To obtain a better overview when connecting cables, only use as many
i
leads as necessary.
To connect cables to the system periphery, proceed as follows:
Only use the specified cables for wiring. Note the cable recommendation
[►Section 5.4.1, Page 27].
Connect the lines to be wired to the device to the system periphery as shown
in the connection diagrams supplied.
5.4.4 Connecting the CAN bus
Only available for the TAPCON® 230 Pro, Expert and AVT variants.
i
5.4.4.1 Shielding the CAN bus
In order for the CAN bus to operate faultlessly, you have to connect the shield-
ing using one of the following variants. If you are not able to use any of the vari-
ants detailed below, we recommend using fiber-optic cables. Fiber-optic cables
decouple the devices and are not sensitive to electromagnetic interference
(surge and burst).
Damage to the device!
If you connect the CAN bus cable to devices with different potentials, current
may flow across the shielding. This current may damage the device.
Connect the devices to a potential equalization rail to equalize the poten-
tial.
If both devices have different potentials, only connect the CAN bus cable
shielding to one device.
Variant 1: The connected devices share the same potential
1. Connect all devices to a potential equalization rail to equalize the potential.
2. Connect the CAN bus cable shielding to all connected devices.