7. Description of the PicoDrive drive system
The PicoDrive drive system is an electronically commutated, brushless DC motor.
The drive system comprises the following main assemblies:
Fig. 7.1 Fig. 7.2
Motor QE3760 or QE5540 (Fig. 7.1) with an integrated opto-electronic angular rotation sensor for
commutation and positioning. Certified according to CCC.
Control unit (Fig. 7.2) with
- integrated mains switch
- mains connection with interference suppression circuit
- electronically controlled switched mode power supply (SMPS)
- d.c. link
- motor-guided inverter
- control electronics for the motor control unit and machine-specific functions
Speed control unit SCU2 (Fig. 7.3)
Control panel (Fig. 7.4) PicoTop.
7.1 Motor QE3760/QE5540
The motor is a synchronous motor. It has a permanent-magnet rotor, an opto-electronic commutation
transmitter (rotor position sensor) that is mounted on the fan side, and a stator with three-phase
winding.
The rated output of the motor (shaft output) is 375W (QE3760) / 550W (QE5540) in S5 mode. The
rated speed of the motor is 6000 rpm (QE3760) / 3700 rpm (QE5540); the maximum speed is 9000
rpm (QE3760) / 4000 rpm (QE5540).
The motor has two connection cables
a) four-conductor with four-contact AMP special plug (X1) for connecting the stator windings to the
control system
b) six-conductor shielded with nine-contact D-sub connector (X2) for connecting the commutation
transmitter to the control system.
p4
xpd-2-en 7.1 08-08-29
Fig. 7.3 Fig. 7.4
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