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BAMOBIL D3.2
General Information
The digital 3-phase current servo amplifier
BAMOBIL D3
in combination with the
brushless dc motor (synchro servo motor, CE motor) provide a drive solution free of
maintenance and with a wide dynamic control range. The drive displays the
well-known good control characteristics of dc drives without the disadvantages of
the carbon brushes’ wear and the commutation limits. The rotor moment of inertia is
notably lower and the threshold power is greater than with equally constructed
dc motors. This results in up to 5 times higher acceleration values. Compared to
asynchronous motors with frequency converters the stability, the control range and
the efficiency of the drive are considerably improved. The generated heat in
the motor only occurs in the stator, therefore, the bl-motors always have the
protection rating IP 65.
From the electrical view, the brushless dc motor is a synchro motor with a
permanent magnet rotor and a three-phase current stator.
The physical characteristics correspond to those of dc motors, i.e., the current is
proportional to the torque and the voltage is proportional to the speed. The speed
is steadily controlled up to the current limit (max. torque. In case of an overload the
speed drops and the current remains constant.
The speed/torque characteristic is rectangular.
Current, speed, and position are precisely measured. The field frequency is not
controllable, it is automatically adjusted.
The motor voltages and the motor currents are sinusoidal. A maximum motor
efficiency is achieved by means of a compensating current control.
The BAMOBIL drives can be used as position control or torque or speed amplifier.
The speed actual value is generated in the encoder unit (resolver or others).
Note:
For dc, ac, or bl-servo amplifiers which are supplied by a dc mains, it must be
checked that the energy is fed back into the bus during brake operation (external
ballast circuitry).
Information:
Battery drive (analogue and digital)
Compact devices
For low power applications
UNITEK series BAMO-A2/-A3
10 to 40A
UNITEK series BAMOBIL A2/D2 50 to 200A
Thyristor controllers and servo-drives (analogue and digital)
Thyristor controller
UNITEK series Classic
15 to
2000AServo-drive dc
UNITEK series Servo DC
5 to 75A
Servo-drive ac/EC
UNITEK series Servo AC
3 to 75A
UNITEK series DS
3 to 50A
