6420-001-N-K Kollmorgen Stepper Indexer-Driver

The Kollmorgen / Pacific Scientific 6420 Microstepping Indexer-Driver can communicate with RS-232, RS-422 or RS-485 serial protocols at 9600 bps. Discrete I/O lines provide external start/stop and motor enable control, home and limit switch testing, motor jogging and step and direction outputs. The eight programmable bi-directional discrete I/O lines are individually jumper configurable for input or output. The 6420 operates in one of two modes, either Fixed Resolution Mode or Variable Resolution Mode. In Fixed Resolution Mode with binary steps the resolution can be set from 200 steps/rev to 51,200 steps/rev and with decimal resolution 200 steps/rev to 50,000 steps/rev. The minimum and maximum step rates range in value from 0.08 to 19,000 steps/sec vary depending on the resolution. Of course, the finer step sizes result in high shaft resolution at the expense of shaft speed. The motion profile is trapezoidal with programmable initial and final speeds. The acceleration and deceleration rates are specified by a single command in terms of acceleration and deceleration factors ranging in value from 5 to 255. Variable Resolution Mode is beneficial where high resolution, high speed microstepping is desired. This mode allows for positioning at a resolution of 20,000 steps/rev at 0.02 to 6000 RPM.