Product Description:

The 502-03840-00 is a high-speed counter and analog interface module produced by Kollmorgen for the PIC900 Drives series. Mounted alongside the main power section, it links external encoders and sensors to the drive processor, translating incoming pulses into usable position data and driving low-current command outputs. Within an automated cell, the board supports accurate velocity loops, coordinated axes, and event capture, allowing the overall drive system to react to encoder edges, home switches, and electronic gearing requirements in real time.

Counting performance starts with a 24-bit register, giving a numerical range to 16,777,215 before rollover and reducing the need for frequent index resets on long production runs. The fast input stages accept a nominal 24 VDC signal and present only 2.7 kΩ of impedance, so standard industrial proximity sensors can drive the card without additional buffering. Pulse edges are accepted up to 500 kHz, provided each high or low interval is at least 600 ns. The circuitry also recognizes transitions with a maximum on-off delay of 50 µs. A dedicated 7.4 W auxiliary supply feeds the opto-isolated input logic, and encoder channels are protected to a maximum of 7 VDC. Physical wiring terminates on a 40-pin card-edge that can plug directly into the backplane or connect by cable to screw terminals.

Quadrature decoding operates reliably to 250 kHz. The analog driver can source or sink up to ±10 mA around a nominal ±11 VDC reference while maintaining signal linearity within ±5%. The firmware updates all count registers and output words every 32 µs, letting the host processor implement tight position loops with 16-bit resolution. Overall module dimensions of 41 × 305 × 213 mm allow it to fit the standard PIC900 slot width without special brackets, and thermal dissipation remains moderate because total field power is limited to 7.4 W.