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SLMExpansion Module


The amplifier range consists of three drive types:

  • Max 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


Module range

SLM expansion moduleSLM (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.

Network SLM
Network Speed SLM Standard
Topology Star
Max Slaves per Interface Ring 6
Max Interfaces per MC664 7
Max Axes per MC664 42
Cable RS485
Bus to MC664 32 Bit
Registration Inputs 6 x 24V Inputs
Add Registration Capability Y
Optically Isolated registration Inputs Y
Map Any I/O to Any Axis Y
RoHs Compliant
Data Sheet  
View Application Notes Technical notes
Quick Start Guide Simple set up guide (covers all expansion modules)

Package Drawings

Drawings are available in the following formats: DXF, IGES, DWG, STEP and SolidWorks.
These files are included in the Zip file below.
Download Zip file  


The Technical Reference Manual can be downloaded in full or as separate sections. All in PDF format
Expansion Modules (chapter 3) (1.9MB)