Exfo 8600 Inchworm Controller

The EXFO 8600 Inchworm Controller is a precision motion control system engineered for sub-micron positioning accuracy in optical component testing and manufacturing. It commands up to six axes per chassis using patented Inchworm® motor technology, delivering nanometer-scale positioning steps without backlash or mechanical drift. The controller supports open- and closed-loop operation, automatic motor recognition, and multiple control interfaces for both manual and remote operation.

Technical Specifications

• Axis Control: Up to six axes per chassis


• Motor Compatibility: IW-800 series Inchworm motors (with or without shaft encoders), TSE-820 series integrally encoded stages, UHV series motors


• Control Modes: Open-loop (manual handset, joystick, TTL signals) and closed-loop (encoder feedback with step size, position display, zero point setting, position maintenance)


• Automatic Motor Recognition: Connected motors detected upon power-up


• Rotational Motion: Tangent radius input and selectable angular units for display


• Power Supply: Universal 90-260 V AC, 50/60 Hz


• Electrical Performance: Low radiated noise, high electrical immunity, CE compliant

Key Features

• Piezoelectric (PZT) ceramic actuator technology for high-resolution linear positioning


• Sequential activation of three PZT elements (two clamps, one expanding/contracting) for smooth motion across extended ranges


• Front panel controls with optional handset or joystick


• RS-232 serial interface for remote control


• Optional GPIB interface for automated systems


• TTL signal compatibility for integrated automation

Typical Applications

• Optical fiber positioning and alignment


• Precision optical component testing


• Manufacturing process automation requiring sub-micron accuracy


• Laboratory instrumentation with multi-axis motion requirements

Compatibility & Integration The controller integrates directly with IW-800 and TSE-820 motor families, UHV series actuators, and standard laboratory control systems via RS-232 or GPIB protocols. Manual operation supports handsets and joysticks; automated systems interface through TTL signals.