Faulhaber 3242 BX4 Series, Instruction Manual

Page: 40 / 52

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4 Functional Description
4.4 Motor with SC speed controller
Block diagram
DIR Rotational direction input
Evaluation
rotational
direction
U
nsoll
n
soll
0 – 10 V DC
Setpoint input
Digital output
FG
22 k Ω
Electronics supply
U
p
Motor supply
U
mot
GND
MOSFET
Power
output
stage
Protection function:
Overtemperature
Microcontroller
PI velocity
controller
Speed
calculation
Armature
position
calculation

(t)
I²t current
limitation
U
a
3 Phase
PWM
block
commutator
5 V-Control
BL-Motor
Phase A
Phase B
Phase C
Hall sensor A
Hall sensor B
Hall sensor C
VCC
+5 V
Signal GND
I
ist
RM
Motor
model
k
E
Setting options
„ Pure 2-Quadrant operation without active braking option.
If problems occur during operation with the braking function in the default setting it can be
deactivated.
„
Filtering (averaging) of the Hall sensor signals.
If problems occur with the default setting the time of a complete electrical (half) motor revolu-
tion is evaluated to obtain a continuous speed signal. This can cause instable motor running at
low speeds as the control dynamics worsen.
„ Configuration of the digital output as error output.
„ Frequency output can be configured to 6 or 2 pulses per revolution.
„
Target velocity value via PWM signal at the target velocity input. See Chapter 4.4.3 “Special con-
figurations” .
„
Operation with fixed speed (fixed speed mode). See Chapter 4.4.3 “Special configurations” .
„ Operation as voltage controller (volt mode). See Chapter 4.4.3 “Special configurations” .