Axiomatic Technology C902 Motion Board

The Axiomatic Technology C902 is a programmable motion control board engineered for demanding closed-loop control applications, particularly for managing hydraulic proportional valve systems. This versatile controller operates within a 9 to 54 Volt DC power environment and excels in applications requiring precise electro-hydraulic control, including position feedback systems, pressure regulation, flow management, and velocity control. The C902 is specifically designed for harsh industrial environments where reliability and robust performance are essential requirements.

Control Architecture and Processing Capabilities

The C902 motion board implements PID control algorithms to achieve precise closed-loop regulation of hydraulic systems. This control architecture enables the board to continuously compare actual system performance, measured through analog input signals from position or pressure transducers, against programmed setpoints. The PID algorithm calculates any deviation between actual and desired values, then generates appropriate output signals to drive hydraulic proportional valves, ensuring accurate positioning or pressure regulation even under varying load conditions. The board supports independent PID loop configurations, allowing it to manage multiple control axes simultaneously without performance degradation.

Input and Output Configuration

The C902 provides comprehensive signal interfacing through its analog I/O architecture. Two analog input channels accept standard industrial signals including 0 to 5 Volt, 0 to 10 Volt, 0 to 20 milliampere, and 4 to 20 milliampere configurations, enabling direct connection to a wide variety of position transducers, pressure sensors, and other measurement devices. A single analog output channel supplies 0 to 1 Ampere driving capability specifically optimized for hydraulic proportional valve control. The board also features four additional input or output channels that are user-configurable for digital I/O applications. Two dual-purpose digital channels can operate either as discrete inputs for limit switches and status monitoring or as discrete outputs for pilot control functions. Two dedicated digital outputs provide pilot drive capabilities with up to 1.5 Ampere output current per channel. All analog and digital channels are protected against overvoltage, reverse polarity, and short-circuit conditions to ensure reliable operation in industrial environments. The C902 is operational within an ambient temperature range of -40 to +85 degrees Celsius, meeting stringent requirements for outdoor and mobile equipment installations.

Programming and Configuration Tools

The C902 is programmable using the Axiomatic Electronic Assistant software, a Windows-based development environment that provides a user-friendly interface for configuring control algorithms, setting PID parameters, defining I/O channel functions, and establishing communication protocols. The programming software supports function block diagram programming methodology, suitable for engineers familiar with control system design. Users can create custom control sequences and calibration routines tailored to specific application requirements.

Communication and Fieldbus Support

The motion board incorporates a CAN SAE J1939 communication interface, enabling seamless integration with vehicle and industrial control networks. This fieldbus connectivity allows the C902 to function as a distributed control node within larger automation systems, exchanging data with master controllers, operator interfaces, and other intelligent devices across the network. CAN-bus support is particularly valuable in mobile hydraulic applications where centralized wiring is impractical and distributed control architectures are favored. Through the CAN interface, users can remotely monitor motion board status, adjust control parameters in real time, and diagnose system performance without requiring physical access to the controller.