
29
Additional Modes
Position Control with a
Voltage at the Analog
Input
In this mode the command
position value can be regula-
ted with an adjustable resistor
(a potentiometer), or any other
adjustable analog voltage
source.
PI-Speed
Controller
MOSFET
Power
Amplifier
EC-Motor
Armature
Position
Calculation
Phase A
Phase B
Phase C
Hall Sensor A
Hall Sensor B
Hall Sensor C
Speed
Calculation
I
2
t - Current
Limiting
R
S
GND
V7
Microcontroller
RS-232
Communication
and Configurations
Module
+ 24V DC
V6
U
B
PC TXD
PC RXD
GND
n
act
V2
V1
RXD
TXD
I
act
Position
Controller
RS-232
Interface
3 Phase
PWM
Sine Wave
Commutator
ϕ
(t)
n
com
∆ϕ
U
a
Protection:
Current Limit
Overtemperature
Overvoltage
Undervoltage
5V- Regulator
VCC
Signal GND
Evaluation
Input 3
Input 3
V8
M8
M7
M1
M2
M5
M6
M3
M4
brown
orange
yellow
green
blue
grey
red
black
+5V
V4
Fault
Output
V5
V3
Command
Position
Calculation
10k
E
xa
m
ple
:
Lim
it S
w
itch
REFIN
Evaluation
Limit Switch
Analog
Input
AGND
+
_
GND
±
10V
Diagram 10: Position control with an analog voltage
Command Function
Description
Example
APCMOD *)
Analog Position
Switches to analog
APCMOD
Control Mode
positioning mode
LL *)
Load Position
Loads position limit:
LL10000
Range Limits
Provides the maximum
position at the maximum
analog voltage of 10 V.
The LL command sets the position range limits.
A voltage of 10 V conforms to the predefined upper position limit.
At –10 V the motor will position at the maximum in the
other direction.
Independent of the limits set with the LL command, the outer
positioning limit is set in APCMOD at 1,000,000.
Important: The resolution of the analog input is limited to 10 Bit
(1024 Steps).
Содержание MCDC2805 series
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