Overview
SLM (Speed Loop Motor) Technology forms the basis
for Control Techniques' range of Precision Servo Amplifiers, based
on a digital high-speed communication system that links the
controller, motor and amplifier. The feedback resolution provides
over 8 million counts per revolution and the speed, current and
position loops are updated every 125us to provide optimum
performance. The amplifier range consists of three drive types:
- M’Ax provides a single high performance SLM axis for motors of
up to 20Nm
- MultiAx integrates three high performance SLM axes in one
module for servo motors of up to 23Nm
- Unidrive SP utilises a Control Techniques click-in SLM option
module to provide a single high performance SLM axis for use with
higher power and higher speed motors
Applications
SLM Technology has been applied in a wide range of applications
where high-fidelity motor control is a requirement. For
example:
- Machine tool application
- High-speed printing
- Precision packaging
- Woodworking machinery
- Robotics
Benefits
- The high speed SLM digital link requires only 4 wires between
the motion controller, motor and amplifier greatly reducing the
number of connections and increasing system reliability
- High resolution encoder and the fast digital link allow the
system to operate with higher gains than would usually be possible,
this greatly increases the dynamic response of the system
- SLM technology utilises an SLM encoder, to reduce the effect of
noise, the analogue signals are converted to a digital position
value on the back of the motor, this greatly improves feedback
quality and increases positioning accuracy
- A wide range of third party motion and CNC controllers are
available for connection to SLM amplifiers and motors
- Motor data is stored digitally during the manufacturing process
within the motor encoder; this removes the need to input motor
information, simplifies tuning and removes the need to re-configure
the system if the motor is changed
- Compact amplifier modules reduce the cabinet space
required