The RTR Closed Loop controller shares the same housing with the RTR Servo controller. The new housing is larger than the RTR Performance and Classic. Extra space was required since both systems have encoder feedback and thus need more space for wiring and feedthrough of encoder cable. The new housing also have extra outputs. Standard it has 4 outputs which switch 220V solid state relays...
This module fits the RTR Servo or RTR Closed Loop Stepper systems we offer. We have sold many RTR controllers and have seen the concept of offering a total solutions works. The only thing we did not offer with the Classic and Performance controller was the PC. We have seen this go wrong in the past many times. A perfectly good CNC system, can have problems, if the PC it is connected to fails...