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4 Functional Description
4.1 Motor without attachment
4.1.1 Connection functions with digital Hall sensors (standard version)
The servomotor requires and external control for operations and has the connection options listed in
Phase C to Phase A (core 1 – 3)
The rotating field required to operate the motor is applied to phases C to A.
Voltage range: 0 V AC to U
max
.
The following limits must be adhered to for U
max
:
Note and observe limit speed according to product data sheet.
U
max
< 50 V AC (below the Low Voltage Directive).
CAUTION!
Harmonic components
When the servomotor is operated with block commutation or PWM, harmonic components can arise,
as a result of which the emission behaviour of the motor can worsen.
f
Ensured operation of the motor within the EMC requires a harmonic-free rotating field, or the
suggested FAULHABER control. See
Chapter 3.4 “Connection examples”
.
GND (core 4)
Joint ground of the Hall sensors.
U
DD
(core 5)
Supply voltage for Hall sensors.
Voltage range: 2.2 …18 V DC.
Input current: < 18 mA.
Output signals Hall sensor C to Hall sensor A (core 6 – 8)
Signal output of the Hall sensors.
Voltage range: 0.1 V DC … U
DD
.
Output current: < 25 mA.
The output current results from the applied pull-up voltage and the pull-up resistance used.
Signal setup: The Hall signals are 120° out of phase with each other according to the phases. Due to
the 4-pole version, the switching frequency is twice as high as the speed.
