Product Description:

The MMC 4-AXIS Analog Unit is a four-channel motion controller manufactured by Kollmorgen within the MMC Standalone Smart Drives series. Serving as the central processor in compact automation cells, it receives analog command signals, computes axis trajectories, and transmits reference outputs to separate drive amplifiers. By integrating sequencing, interpolation, and local I/O handling, the device eliminates the need for an external PLC in many pick-and-place, packaging, or material-conversion machines.

Its processing core is a 32-bit RISC processor with a numeric coprocessor, enabling floating-point calculations for spline generation and kinematic transforms. Application code is stored in 256 KB of battery-backed SRAM, and permanent recipes reside on a 2 MB flash disk, so system software and user programs survive power loss. One analog input is digitized at 12 bits every 100 µs, providing feedback for torque or tension loops, while four analog outputs are generated with 16 bits of resolution for precise control of servo amplifiers. The controller refreshes these outputs fast enough to maintain smooth motion profiles, and dedicated axis fast inputs capture edge events for position latching.

Feedback from external encoders enters through a 26C32 differential RS-422 receiver stage that rejects common-mode noise on long shielded cables. Quadrature or clock-direction signals can be counted at up to 250 kHz, allowing accurate position tracking even on high-speed linear stages. For machine coordination, each axis has 4 inputs and 8 outputs that toggle in hardware under trajectory control, while an additional bank of general-purpose and auxiliary points handles sensors, clamps, or actuators. The available I/O supports synchronized moves and deterministic event handling without requiring external fieldbus modules.