Datasheet

TMC2130 DATASHEET (Rev. 1.09 / 2017-MAY-15) 9
www.trinamic.com
1.8 dcStep – Load Dependent Speed Control
dcStep allows the motor to run near its load limit and at its velocity limit without losing a step. If the
mechanical load on the motor increases to the stalling load, the motor automatically decreases
velocity so that it can still drive the load. With this feature, the motor will never stall. In addition to
the increased torque at a lower velocity, dynamic inertia will allow the motor to overcome mechanical
overloads by decelerating. dcStep feeds back status information to the external motion controller or
to the system CPU, so that the target position will be reached, even if the motor velocity needs to be
decreased due to increased mechanical load. A dynamic range of up to factor 10 or more can be
covered by dcStep without any step loss. By optimizing the motion velocity in high load situations,
this feature further enhances overall system efficiency.
Benefits are:
- Motor does not loose steps in overload conditions
- Application works as fast as possible
- Highest possible acceleration automatically
- Highest energy efficiency at speed limit
- Highest possible motor torque using fullstep drive
- Cheaper motor does the job