schmersal Praxi 100, Руководство пользователя

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5. Fieldbus Parametrization
The following chapter describes briefly how to parametrise the AC drive in order for the motor to be controllable via fieldbus.
These instructions are written for basic applications. For more information, consult the application-specific manual.
In order for the AC drive to accept commands from the fieldbus network, the control place of the AC drive has to be
set to fieldbus. The default value of the parameter “Control Place” is usually I/O. Note that if the control unit firmware
is updated, the default settings are restored. In addition, some applications may have the remote speed reference
selection set by default to other than fieldbus. In these cases, the speed reference selection must be set to fieldbus, in
order for the speed reference to be controlled via fieldbus.
NOTE!
The motor control mode should be selected to support the used process and profile. The navigation path to the
fieldbus parameters may differ from application to application. The exemplary paths below apply to the Praxi 100 family
AC drive.
The following tables list some of the parameters related to fieldbus control in case of Schemersal applications for the
PRAXI 100 family AC drive. See the application specific manuals for more detailed information.
Parameters can be read and written by using the drive panel, PC Tool or fieldbus protocol. See Chapter 6.3.5 for
reading and writing application parameters over Modbus. Notice that some of connection parameters for fieldbus
may need to be set (depending on your configuration) via panel or PC tool, before you can connect over fieldbus and
write application parameters.
Some extra parametrisation has to be made in order to control the frequency control with torque control. The following
instructions are for the Praxi 100 family AC drives, see the application specific manual for more detailed information.
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Motor control mode (ID 600) must be configured to “Torque control” (2).
To configure the drive to use correct torque reference, select the parameter “Torque Reference Selection” to ProcessDataIn1
(9). This can be done with: PC-tool or panel in panel tree: P 3.3.2.1, ID 64
Table 4. Parametrization for Praxi 100 family AC drive (Standard application)
5.1 Fieldbus Control and Basic Reference Selection
5.1.1 Torque Control Parametrization
Parameter name ID Value Default Panel Tree
Control mode 600
0 = Frequency
1 = Speed
2 = Torque
0 P 3.1.2.1
Remote control place 172 1 = Fieldbus CTRL 0 P 3.2.1
Local / remote 211 0 = Remote 0 P 3.2.2
Fieldbus ref. sel. 122 3 = Fieldbus 3 P 3.3.1.10