– maxon’s EPOS 24/1 is a digital motion controller capable of position, velocity,
and current mode. Available in two
versions for brushed or brushless motors, the small package size and
cost-efficient design makes the EPOS 24/1 an ideal choice for controlling small
motors. Dimensions are 55 X 40 X 25 mm
(2.2 X 1.6 X 1 in) and weight is 45 g (1.6 oz). Communication is via RS-232 or
CANopen. Software for CANopen and
Windows DLL’s is complimentary.
Requiring a supply voltage of
the controller is capable of 1 A max continuous current and 2 A peak
current. Efficiency is up to 85%. The 50 kHz switching frequency and built-in
choke insures compatibility with most low inductance motors, while the
sinusoidal commutation for brushless motors insures minimal torque ripple and
low noise. Maximum motor speed is 25,000
rpm for 2-pole motors. A maximum encoder
input frequency of 1 MHz, six digital inputs, two digital outputs, and two
analog inputs allows for maximum flexibility.
The DECS 50/5 (Digital EC Controller Sensorless) is a new controller for driving brushless DC motors without Hall sensors. Typical sensorless drives such as pumps and fan applications can now easily be created thanks to modern technology and expert integrated controlling algorithms. maxon’s newly developed speed controller is particularly impressive through its performance, price and size.
The wide input voltage range of 10 to 50 V means that the DECS 50/5 is very flexible and adaptable. In continuous operation, an output current of 5A of the power stage is permissible, giving it a maximum output performance of 250 Watts — all this with it only being the size of a business card. The speed value can be set via an integrated potentiometer or an analog set value. The 1-Q amplifier can be operated at up to a maximum speed of 80 000 rpm.
The DECS 50/5 also provides control inputs for selecting motor direction, enable and braking. An operating status display (LED) and speed monitor output complete the convenient control features. Plug-in screw terminals and a Flexprint connector for maxon flat motors are available for the connection.
Filed Under: Motion control • motor controls