Introduction

PI offers DC servo motor controllers to operate all motorized micropositioners found in the "Micropositioners" section of this catalog.

Two models are available, the C-842 PC Plug-In Board (2 and 4 axes) and the C-844 Four Axis Rack Mount Controller providing fast RS-232 and IEEE 488 communication. Both controllers come with on-board, low noise linear power amplifiers to directly drive DC motor / gearhead equipped PI micropositioners. The C-839 DC Servo Power Amplifier (click here) is available to operate fast, direct drive micropositioners. Series M-511, M-521 and M-531 translation stages (see "Micropositioners" section) feature integrated PWM power amplifiers that can be driven by the PWM outputs of the motor controllers.

PI DC Servo Motor Controllers feature

• Simultaneous Control of 4 DC Servo Motors
• 32 bit Digital PID V-ff Motion Control Filters
• Fast Servo Loop (100 µs /axis)
• Trapezoidal-Curve, S-Curve & Velocity Contouring
• 16 Programmable I/O Ports
• 4 Analog Input Lines (10 bit)
• Programmable Limit Switch and Origin Switch Inputs
• Compatibility with all Quadrature Encoder Types (Linear Scales, Rotary Encoders and Interferometers)
• On-Board Linear Power Amplifiers (12 bit) and PWM Outputs
• Electronic Gearing
• Programmable Torque Limit
• PC Plug-In and Desk Top Devices

PI motor controllers are supported by a variety of software tools for easy operation and additional operating modes such as joystick mode or multi-controller operation for up to 16 axes.