Trio Motion Technology


	SLM (Speed Loop Motor) is a digital drive communication method developed by Control Techniques. Central to the system are motors fitted with an “SLM”. This is a high resolution encoder and processor system fitted directly on the back of the motor. The SLM transmits drive demand signals to a simplified drive stage, and position measurements back to a motion controller, on a 3 node mini-network dedicated to that axis. The SLM receives speed demand signals from the Motion Coordinator on the same digital network. A separate communication link is used for each axis so performance is not affected by the number of axes under control. The key advantage of the SLM system is that the very high resolution speed information from a SINCOS encoder is directly available to the SLM allowing it to close the speed loop without the transmission delays of a digital network. Control Techniques manufacture single axis M’ax drives using the SLM system and 3 axis MultiAx drives. Trio manufacture a 3 axis daughter board to support the SLM system. Up to 4 of these daughter boards can be fitted in an MC224.