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> MC433 4 axis unipolar stepper motor controller 8A pwm
MC433 4 axis unipolar stepper motor controller 8A pwm
The MC433 is a multi-microprocessor controlled 4 Axis 8A Unipolar PWM Stepper Controller that attaches directly to a PC parallel port. Each channel supports variable PWM control and can be individually set for Wave step, Full step or Half step. Using four ATmega168 8bit RISC microcomputers the MC433 provides user adjustable initial on time, duty cycle and duty cycle slew rate using three potentiometers to match the drive characteristics of almost all stepper motors. Direction and step commands are fed to each channel through the PC compatible parallel port interface. The MC433 is designed for high performance unipolar stepping applications. The MC433 is ideal to drive a CNC Sherline, TAIG or similar Mill with room to spare for larger CNC projects.
The MC433 uses four AVR ATmega168 8 bit RISC microcontrollers to individually control the PWM output to each of the four motor ports. Using high speed Power MOSFETs each channel can sustain 8A and peak at 33A ensuring support for the most demanding stepper application. Stepper input voltage may range from 7V to 35VDC. Limit switch detection logic on each channel is routed to the parallel port connector for host software control of stepper halt. Four output control lines are available to control external relays or related devices via transistor boosted pull down logic. Power for board logic is jumper selectable from stepper motor supply or a seperate wall mount DC adapter.
For detailed technical information (pdf):
MC433 Hardware Technical Reference Manual
MC433G Hardware Technical Reference Manual
* 4 Axis PWM unipolar stepper control
* Dedicated processor on each axis
* PWM on time, duty cycle and duty cycle slew rate settable
* Wave, Full and Half step settable individually for each axis
* PC parallel port interface
* Individual limit switch detection on each axis (fed to parallel port)
* Four control outputs (routed to parallel port)
* I2C TWI Communication port for individual motor control
* Expansion ports for other functions
* 9-12VDC in (polarity protected)
The MC433 is also available in a G version - MC433G. The MC433G includes an onboard G Code processor that directly translates G Code commands into step/direction commands. The MC433G also allows direct control of PWM settings on an individual motor basis so it is possible to use different current ratings for each stepper motor. The MC433G implements a sophisticated G Code interpreter supporting linear and circular interpolation on board eliminating the need to feed step/direction signals through the parallel port. Communication with the MC433G is via an RS-232 or RS-485 port.
The MC5 attaches to the MC433 and provides 4 24DC relay channels controlled by the auxiliary output lines.
For correct technical information (pdf):
