Lenze is now supplying the Panasonic B1 range of motors (including geared
units), which have the benefit of a fully integrated drive within the
motor frame. Available from 30 to 130W (110 or 230V single phase), the B1
brushless motors are based on Panasonic's 'Hyper' technology. A plastic
body has been developed with a moulded core design for the windings,
resulting in reduced motor mass and length. With its drive, a B1 motor is
about the same length as a conventional motor.
Accurate speed control is achieved with Hall-effect sensors, built into
the back of the motor and protected to IP65. Lenze claims that the
overall performance of these B1 motor/drive combinations is better than
open loop ac inverter systems and on a level with dc systems. Constant
torque is available across a 100:1 speed range (30-3,000rpm), with full
torque available at zero speed. The speed holding accuracy is quoted
within 1%.
A choice of analogue (basic control)or digital (advanced control) keypads
allows external communication with the drive electronics.