Control Electronics Technology − short and to the point
Motor type − Brushless motors − Brushed motors Process variables − Current, torque − Speed − Position Feedback − Incremental encoders − Absolute encoders
− Hall sensors Communication
− Analog and digital inputs and outputs − B us systems (CANopen, EtherCAT, RS232, USB, etc.)
Motor Controllers (slave) EPOS – Current, speed, and/or position controllers (slave) with CANopen or EtherCAT communication – Positioning with motion profile, homing – Cyclic synchronous operating modes (CST, CSV, CSP) ESCON – Current and/or speed controllers (slaves) with I/O communication – ESCON2 also with CANopen
Communication Digital and analog I/O
CANopen For time-critical communication of up to 6 commands per ms. Suitable for many applications that do not have extremely high requirements in terms of speed and the number of slaves or axes. EtherCAT For top performance, with very fast data exchange between many slaves, even over long distances.
For simple commands such as specifying analog set values, activation, stop, reversal of direction of rotation RS232 and USB For non-time-critical communication between the master and slaves. Typically up to several tens of milliseconds per com- mand, and not in real time.
Motor controller, schematic diagram
Path generator
Speed ramp
Current set value
Speed/position control
Driver, power stage
Set value
Current control
4Q
Actual Current
Actual value
Feedback
maxon 87
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