Product Description:

The 502-03840-03R2 is an I/O expansion card manufactured by Kollmorgen for the PIC900 Drives series. Installed in a drive rack, it supplies analog motion commands and captures encoder feedback so the controller can close precise position, velocity, or torque loops in industrial automation cells. By translating processor-level setpoints into differential voltage outputs and by timing incoming incremental encoder signals, the module helps the overall drive regulate servo axes used in conveying, material handling, or electronic assembly equipment.

The card delivers an analog range of ±11 VDC with 16 bits of resolution, allowing the host processor to program 65,536 distinct output levels for fine speed control. A conversion cycle completes every 32 µs, so commanded changes reach the motor drive within one PLC scan. For feedback, the encoder input accepts quadrature rates up to 250 kHz, or 500 kHz for single-ended pulses, enabling reliable capture of high-speed rotary data. The fast-response inputs present 2.7 kΩ impedance, while logic thresholds of 15 V on and 5 V off help protect the channels from noise. Electrical limits of 7 V and 22 mA keep the receiver within safe operating margins, and a minimum encoder pulse width of 0.6 µs preserves edge integrity.

A shielded cable may extend to 200 ft before quadrature timing error exceeds 45°, making the board suitable for remotely mounted encoders. Internal dissipation is held to 7.4 W, and the unit draws regulated rails of +5 V 413 mA, +15 V 55 mA, –15 V 51 mA from the PIC900 backplane. Continuous service is specified from 7 to 55 °C. Storage down to –40 °C is permitted. Two ±10 mA output drivers maintain less than 10 mV RMS ripple at 30 kHz, and each new voltage value remains stable until the next update cycle. Field wiring lands on a 40-pin card-edge that mates with screw-terminal breakout hardware for secure plant installation.