The model series C3177 digital drive is available as a packaged solution for the most demanding rotary motion applications. The controller incorporates a digital signal processor and encoder feedback to provide speed regulations better than .05% of the setpoint. Three mode PID control for the velocity loop is standard. Output amplifiers available include linear servovalve drivers, pulse width modulated solenoid drivers, isolated voltage or 4 to 20 ma. signal as well as a regenerative dc motor controller, rated up to 12 amps.

All of the models include programming packages to configure master drives, slave drives and center driven unwinds and rewinds. These industrial controllers are isolated and powered directly from either a 115 or 230 volt AC power line. Some models are available for operation from a bipolar 10 to 30 volt dc power source.

All master drive controllers include linear acceleration and deceleration ramps for both the forward and reverse directions. Slave and winder drives are available with optional inputs to operate with analog voltage trim or provide closed loop tension control using external load cells for the feedback signal. Unwind and rewind drives include the software to automatically calculate the roll diameter and adjust the drive torque to maintain the desired setpoint tension. The operator's control station for all models features a bright digital LED display and a sealed keypad to adjust the operating parameters. One or two operator's stations can be plugged in to each drive controller.

All of the drive configuration variables and tuning values are set using a standard PC running the Microsoft Windows 9X, NT, 2K or XP operating systems. The PC is connected to the drive controller through a standard serial port and cable. The setup program is supplied on a CD-ROM and includes extensive application tips, mounting and wiring diagrams, installation and startup procedures as well as operation instructions. In addition the software has a remote control program that allows the drive to be operated or monitored directly from the user's PC. The PC is required for initial setup only. Once the setup parameters have been loaded into the controller they are stored in non-volatile memory.