Product Description:

The 502-03840-03R0 interface card is produced by Kollmorgen for the PIC900 Drives series. Within a drive backplane, it serves as the mixed-signal link between feedback devices and the motion processor, providing conditioned encoder inputs and regulated analog outputs. The module’s role is to let automation controllers execute closed-loop velocity and position tasks with minimal latency, making it a core element in packaging lines, gantry stages, and other multi-axis equipment.

Its two voltage channels produce a nominal span of ±11 VDC. The converter uses 16-bit resolution, giving 65,536 discrete levels for smooth torque or speed control. At the output terminals, the card can source or sink up to ±10 mA at ±10 V, and ripple stays below <10 mVRMS at 30 kHz to prevent unwanted dither in downstream amplifiers. New values are loaded every 32 µs, so the analog command keeps pace with high-bandwidth servo loops. Voltage accuracy remains within ±5% at 11 V, and total field power dissipation of 7.4 W keeps board temperature manageable inside a sealed enclosure. The encoder input section accepts differential signals up to the rated 7 VDC, aligning with standard 5-volt or 7-volt line-driver encoders used on rotary and linear axes.

For feedback capture, the card allows a maximum input current of 22 mA at 7 VDC and processes pulse streams up to 500 kHz, retaining full quadrature decoding to 250 kHz without cycle loss. Line receivers exhibit an impedance of 2.7 kΩ, helping limit loading on remote transducers, while the fast inputs have an on/off response of only 50 µs to maintain edge fidelity during rapid reversals. Cabling may extend 200 ft at 250 kHz, provided each channel respects the minimum 0.6 µs pulse width and does not exceed 30 VDC, ensuring accurate position capture even on long machine segments.