Delta Tau 4-Axis Interface PLC: Multi-Axis Motion Controller

The Delta Tau 4-Axis Interface PLC is a high-performance multi-axis motion controller from the Turbo PMAC family. This standalone controller provides up to 4 axes of servo or stepper motor control, making it suitable for complex motion applications requiring coordinated multi-axis movements. The controller combines the full power of the Turbo PMAC2 CPU with comprehensive I/O capabilities and multiple communication interfaces.

Technical Specifications

The controller supports a minimum of 4 axes of servo or stepper control, with the option to expand to 8 axes using an optional axis expansion board. It features 32 general-purpose digital I/O points, a handwheel port for manual control, and multiple communication links including USB 2.0, Ethernet 100Base-T, and RS-232. The controller provides three types of output signals: analog ±10V 12-bit filtered PWM, analog ±10V 18-bit true DAC, and pulse frequency modulation for stepper motor control.

Motion Control Capabilities

The Turbo PMAC architecture enables coordinated motion between axes, supporting linear and circular interpolation, electronic gearing, cam profiling, and spline contouring. The controller can execute motion programs independently of a host computer, reducing communication overhead and improving real-time performance. The encoder interface supports various encoder types, providing flexible feedback options for different motor and drive configurations.

Programming and Development

Delta Tau provides a comprehensive software development environment for programming the 4-Axis Interface PLC. The controller supports Delta Tau's motion programming language, which includes powerful commands for trajectory generation, homing sequences, and error handling. The controller can also execute PLC-style logic programs for machine sequencing and safety functions, integrating motion and logic control in a single device.

Communication and Integration

The multiple communication interfaces allow flexible integration into various automation architectures. The USB port provides convenient connectivity for programming and configuration. The Ethernet port enables network-based control and data exchange, supporting protocols for connection to HMI panels and supervisory systems. The RS-232 interface offers compatibility with legacy equipment.

Expansion Options

The optional axis expansion board adds four additional servo channels, bringing the total axis count to eight. The expansion board also provides extra I/O ports, increasing the overall system capacity for applications requiring more than four axes of control.

Typical Applications

The Delta Tau 4-Axis Interface PLC is deployed in CNC machine tools, robotic systems, packaging machinery, printing presses, semiconductor equipment, and custom automation cells. Its ability to control both servo and stepper motors makes it versatile for mixed-technology applications. The controller is also suitable for retrofitting legacy machine tools with modern motion control capabilities.