The new DMC-controller contains a 1.4 A per phase, 30 V stepper amplifier that drives a two-phase bipolar stepper motor in full-step, half-step, 1/4 step or 1/16 step. The unit is user configurable from 0.5 A to 1.4 A per phase in 10 mA increments at 12-30 VDC. The servo loop update time is 125 µs, the encoder frequency is 15 MHz and stepper pulse output is 3 MHz. Other features of include PID compensation with velocity and acceleration feedforward, non-volatile memory for user programs, multitasking for simultaneously running up to four programs, and I/O processing for synchronizing motion with external events. Modes of motion include point-to-point positioning, position tracking, jogging, contouring, electronic gearing, ECAM, and PVT. The controller provides optically isolated inputs and outputs standard. I/O include forward and reverse limit inputs, homing input, eight uncommitted digital inputs, four uncommitted digital outputs, two uncommitted analog inputs and one uncommitted analog output. Two daisy-chainable Ethernet ports are included and an external Ethernet hub is not required. A 115 kb RS-232 port is also provided. The ability to receive inputs from two digital encoders is standard, with BiSS, SSI and sinusoidal encoder input formats available as options.
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