Bosch PIN8 N1 Guia de Resolução de Problemas Página 213

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MPH-02, MPB-02, MPD-02 Drive Control 6-1
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
6 Drive Control
6.1 Overview of Drive Control
The IndraDrive firmware supports the following two basic principles of
drive control:
open-loop axis control or open-loop operation (open-loop U/f
control)
open-loop-controlled operation without encoder information
closed-loop axis control or closed-loop operation
closed-loop-controlled operation with encoder feedback
Note: Using the closed-loop operation makes higher demands to the
hardware design of a drive, as it always requires a motor
encoder.
Open-Loop Axis Control (Open-Loop Operation)
In the case of open-loop axis control ("open-loop operation"), controlling
the drive is only possible without encoder. Consequently there are
restrictions in the selection of operating modes (no position control
modes).
Motor control in this case takes place as open-loop U/f control (see
"Voltage-Controlled Operation (Open-Loop U/f Control)" in section "Motor
Control").
master
oper. mode 2
oper. mode 1
DF000090v01_en.fh7
open-loop drive control
cmd. value adjustment
(depending on oper. mode)
drive controller
open-loop
motor control
(U/f)
- without encoder -
limitation
torque/current
Fig. 6-1: Principle of drive control of open-loop operation
See also section "Open-Loop Axis Control (Open-Loop Operation)" in the
same chapter
See also section "Functional Packages" in chapter "System Overview"
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