1. Introducing the System
• DOK-CONTRL-DDC+MDD+DLC-ANW1-EN-E1,44 • 01.97
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1.
Introducing the System
Digital AC Drives
Digital AC drives are microprocessor controlled, brushless, three-phase cur-
rent drives with high dynamics and precise servo drive features.
The entire scope of
• drive control,
• monitoring,
• parametrization and
• diagnosis
are performed digitally by a signal processor based on high-resolution mea-
surement of the rotor position across the full speed range.
Digital AC drives with
with a DLC single-axis
positioning module
By equipping the drive with the DLC 1.1 single-axis positioning module
means that the drives can be operated as digital intelligent single-axis posi-
tioning controllers.
Fig 1.1: Digital AC servo drives and single-axis positioning modules DLC 1.1
M
3~
~
~
Digital intelligent drive controller
with single-axis positioning module
digital
AC servo motor
higher-level
system
Posi-
tioning
module
DLC
max. 4 plug-in modules
Parameters
Diagnoses
Oper. data
RS 232
PLC
Field
bus
system
or
I / O
module
e.g.,
DEA
X
-
Kv
+
W
X
d
ω
RS 232
Kv = loop gain factor
W = reference input variable
X = controlled variable
Xd = W-X
ω
= speed command value
drive computer
speed
control
field oriented
stator current
control
high-resolution
positioning interface
FPpos
RS 232
keyboard
RS 485
keyboard
user
program