Product Description:

The 502-03839-04 module is produced by Kollmorgen for use with the PIC900 Drives series. It serves as a mixed-signal interface that links motion-control processors to sensors, actuators, and encoders, allowing the drive to sample field data and generate precision command voltages inside automated machinery. Because both analog and encoder functions are integrated on the same board, signal routing stays direct between the controller and field devices. This arrangement lets one board handle both incoming feedback and outgoing control signals within the same motion system.

The unit receives four differential analog inputs that are digitized at a resolution of 12 bits, giving 4096 discrete levels for process variables such as pressure or position. Two buffered analog outputs leave the board at a finer 16 bits, so downstream devices can be driven with 65,536 possible setpoints over the available output span. High-impedance front ends present 1 MΩ of differential resistance to minimize loading on connected transducers. Fast inputs rated at 24 VDC transition in just 50 µs, enabling reliable capture of limit-switch edges and other quick state changes. Once new data are accepted, the digital-to-analog converters refresh commanded voltages every 32 µs, which helps the control loop respond smoothly during rapid speed changes.

Three encoder inputs handle incremental feedback, and the primary pulse channel accepts frequencies up to 500 kHz, which suits fine-pitch linear scales and high-speed rotary feedback devices. Quadrature decoding is maintained to 250 kHz, preserving directional resolution without missing counts during normal operation. The analog stage can swing to a maximum of ±11 VDC while delivering ±10 mA, supporting servo drives that use voltage-mode commands. Continuous operation is specified from 7 °C to 55 °C, and storage is permitted from -40 °C to 85 °C. Field-side power dissipation is 7.4 W, so cabinet airflow must remove the generated heat during operation.