2 Optional Kits
In order to make the CANopen communication possible with the CFW-11 frequency inverter, it is necessary to use
one of the CAN communication kits described next. Information on the installation of the module in the inverter can
be obtained in the guide that comes with the kit.
2.1 CAN Interfaces
2.1.1 CAN-01 Kit
; WEG part number: 10051961.
; Composed by the CAN communication module (drawing at the
left), mounting instructions and fixing screw.
; The interface is electrically isolated and with differential signal,
which grants more robustness against electromagnetic interference.
; External 24V power supply.
; It allows the connection of up to 32 devices to the same segment.
More devices can be connected by using repeaters
3
.
; A maximum bus length of 1000 meters.
2.1.2 CAN/RS485-01 Kit
; WEG part number: 10051960.
; Composed by the CAN/RS485-01 communication module
(drawing at the left), mounting instruction and fixing screw.
; It has the same characteristics of the CAN-01 interface, plus an
RS485 interface, for applications where the operation with both
interfaces is necessary.
2.1.3 Connector Pinout
The CAN communication module presents a 5 wire
plug-in
connector (XC5) with the following pinout:
Table 2.1 - CAN interface (XC5) connector pinout
Pin Name Function
1 V- Power supply negative pole.
2 CAN_L CAN_L communication signal.
3 Shield Cable shield
4 CAN_H CAN_H communication signal.
5 V+ Power supply positive pole.
2.1.4 Power Supply
The CFW-11 CAN interface needs an external power supply between pins 1 and 5 of the network connector. In
order to avoid problems of voltage difference among the devices, it is recommended that the network be fed at only
one point, and that the supply be taken to all the devices through the cable. If more than one power supply is
necessary, they must be referenced to the same point. The data for individual consumption and the input voltage
are presented in the next table.
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The maximum number of devices that can be connected to the network depends also on the used protocol.
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