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MPH-02, MPB-02, MPD-02
Voltage-Controlled Operation (Open-Loop U/f Control)
cmd. value adjustment
(depending on oper. mode)
master
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Cycle Times and PWM Frequencies
Depending on the firmware type (MPH, MPD or MPB) and the respective
control section (CSH01.1, CDB01.1, CSB01.1), there are the following
possible cycle times and PWM frequencies:
TA_current
62.5 µs
83.3 µs
125 µs
125 µs
62.5 µs
62.5 µs
125 µs
TA_current:
P-0-0001:
P-0-0556:
Fig. 6-3:
Cycle times and switching frequencies that can be set
Note:
As regards the MPH firmware for advanced control sections
(CSH01.1), you can either select basic or advanced
performance via bit 2 of parameter P-0-0556, Control word of
axis controller.
Brief Description
The drive function "voltage-controlled operation of asynchronous motors
without encoder in open-loop U/f control" is made available in the base
package "open-loop" in the "velocity control" mode. When the expansion
package "synchronization" has been enabled, the operating mode
"velocity synchronization with real/virtual master axis" is additionally
available.
drive controller
oper. mode 2
oper. mode 1
Fig. 6-4:
Principle of open-loop U/f control
P-0-0001
FWA type
16000
MPH02
12000
MPH02
8000
MPH02
MPB02
MPD02
4000
MPH02
MPB02
MPD02
16000
MPH02
8000
MPH02
4000
MPH02
sampling time of current loop
switching frequency of power output stage (in Hz)
control word of axis controller
open-loop drive control
open-loop
motor control
(U/f)
- without encoder -
limitation
torque/current
Drive Control
P-0-0556, bit 2 Performance
0
Basic
0
Basic
0
Basic
0
Basic
1
Advanced
1
Advanced
1
Advanced
DF000090v01_en.fh7
6-3
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