Eaton DC1-12011 Series, Manual

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8 CANopen
8.2 System overview
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DC1 Frequency Inverter 10/12 MN04020003Z-EN www.eaton.com
8.2 System overview
The DC1 frequency inverter’s CANopen slaves are integrated into a
CANopen fieldbus system.
Figure 85: Integration into the CANopen network
a
Master area, PLC (e. g.: XC100, XC200) or PC with CANopen card
b
Slave area: Frequency inverters with CANopen interface
The RJ-45 connector enables DC1 series frequency inverters to connect to a
CANopen communication network. The CiA DS-301 CANopen communica-
tion profile documents the “How“ of communications.
The CANopen communications protocol draws a distinction between pro-
cess data objects (PDOs) and service data objects (SDOs).
The frequency inverter is controlled with fast, cyclic process data (PDOs).
The process data channel can be used not only to specify the speed setpoint,
but also to trigger various drive functions, such as enables, operating direc-
tions, and resets. At the same time, it can also be used to read actual values,
such as the actual speed, current, and device status, from the frequency
inverter. As a general rule, the frequency inverter’s parameters are config-
ured using SDOs. The parameter data channel makes it possible to store all
application-related drive parameters in the higher-level automation system
and transfer them to the frequency inverter if necessary. All of the frequency
inverter’s parameters can be transferred with CANopen by using the appro-
priate SDO/PDO selection.
①
②