Lenze ETCxxxxx - Manual (Page 55)

Electrical installation
CAN installation instructions
5
5.2
l
55 EDSTCXX EN 2.0
5.2 CAN installation instructions
The connection of the incoming connection cable depends on the module
and is carried out e.g. at the front via a 9−pole D−Sub socket.
Connection cables for CAN connection
1
2
3
4
5
6
7
8
9 9
8
7
6
5
4
3
2
1
1
5
9
6
1
5
Reserved*
CAN low
Ground
Reserved*
Shield
Ground*
CAN high
Reserved*
+U* +U*
Reserved*
CAN high
Ground*
Shield
Reserved*
Ground
CAN low
Reserved*
**
6
9
ETC040
* These signals are optional.
** Metal or metallised plastic housings must be used. The shield must be
connected to the housing on both sides. The contact is achived vie the
metal collars of the fixed components which have protective earth
potentials on both sides.
The figure above shows the complete assignment for the CAN bus cable.
The minimum assignment for the cable of a functioning CAN bus is the
connection of pins Pins 2, 3, 7.
The data cables must be designed as paired shielded cables and must be
pysically separated from energy supply cables. Where this is not possible the
use of double−shielded cables is recommended. The inside shield runs
insulated from the outside shield and is connected to an earth connection
(e.g. Ground *).
)
Note!
The physical connection can be checked at any point of the CAN
bus using an Ohmmeter. All supply voltages must be switched
off prior to the measurement.
The measured resistance between the signals CAN_H and CAN_L
must be approx. 60 Ohm. The resistance between CAN_L and
GND and btetween CAN_H and GND must be "infinitely" large.
Other values can be measured as a result of a short circuit in the
signals or a reversal of the connections.
CiA−DS−102−1 and CiA DR−303−1 describes the plug−in connectors
and cables used and the supported bit rates.
Connection cables for CAN
connection