Newport ESP300-111111 Motion Controller/Driver

The Newport ESP300-111111 is a three-axis motion controller and driver engineered for precision positioning with stepper and brush DC servo motors. Built around a 32-bit floating-point DSP processor, it delivers real-time synchronized control across up to three axes with maximum output of 48 V and 3 A per axis. The unit combines digital PID feed-forward servo loops, programmable 1000x microstepping, and 18-bit DC motor command resolution to achieve repeatable sub-micron positioning. Its 2U rack-mountable enclosure integrates directly into lab benches or instrument racks without external equipment.

– Technical Specifications

• Axes: 1–3 configurable
• Motor Types: 2-phase stepper motors; brush DC servo motors (open-loop and closed-loop)
• Maximum Output: 48 V, 3 A per axis
• DSP Processor: 32-bit floating-point for synchronized multi-axis control
• Servo Loop: Digital PID with feed-forward for velocity profile tracking
• Microstepping: 1000x programmable resolution for smooth low-speed operation
• DC Motor Resolution: 18-bit command output
• Program Storage: 64 kB Flash memory; 99 user-defined programs
• Digital I/O: 16 bi-directional, user-programmable channels
• Safety: Watchdog timer, remote interlock

– Key Features

• Electronic gearing allows axis slaving for different motor/gearhead ratios and lead screw pitches
• On-the-fly adjustment of position, velocity, and trajectory during motion execution
• Advanced origin search with encoder index pulse recognition for precision homing
• Backlash and linear error compensation for repeatable system corrections
• Motion modes include synchronized and non-synchronized point-to-point, jogging, linear interpolation, circular interpolation, and continuous path contouring

– Typical Applications

Multi-axis scanning, automated XY stage control, laser positioning, optical bench alignment, and laboratory automation requiring independent or synchronized motion across multiple actuators.

– Compatibility & Integration

RS-232-C serial interface standard; optional IEEE-488 (GPIB) available. Plug-and-play configuration with ESP-compatible Newport stages—controller automatically detects and loads stage parameters. Bench-top or 19-inch rack mounting.