Faulhaber 2232***BX4S series, Инструкция по эксплуатации

Страница: 30 / 60

30
Functional Description 4
Motor with SC speed controller 4.3
4.3.3 Special configurations
Other setting options exist, in addition to the configurations described in section 4.3.2 .
Presetting of target velocity value via PWM signal
The target velocity value can be input via a PWM signal if the nominal speed value input Untarget is
appropriately configured. The nominal speed value is proportional to the pulse duty factor.
Basic parameter for the pulse duty factor
PWM frequency range: 500 Hz – 18 kHz.
„
Motor stops at pulse duty factor < 2.0 %.
„
Motor runs at pulse duty factor > 3.0 %. „
The target velocity is proportional to the pulse duty factor. The maximum target velocity at 100 % „
can be configured. See section 4.3.4 "Parameter Settings" .
Example block diagram (BL motor with Hall sensors):
DIR Rotational direction input
Evaluation
rotational
direction
U
nsoll
n
soll
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
PWM - Signal
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
The TTL and PLC levels can be configured as switching levels:
„
Mode high level low level
TTL > 3.0 V DC < 0.5 V DC
PLC > 7.5 V DC < 2.0 V DC