NEW: stepper motor controller by Smart Motor Devices

Programmable step motor controller SMSD-822 is designed to operate with hybrid two or four-phase

stepper motor with maximum current per phase up to 8.0 Amp. Three control modes are provided:

programmable, manual and simple driver.

2. Functions and possibilities

· Recording the operation algorithm from a computer to EEPROM of the unit as a sequence of commands.

· Reading the saved algorithm from the EEPROM to a computer.

· The unit can be controlled by computer (“direct control”) or can operate in a standalone mode.

· In the manual mode: the unit receives analog signal “SPEED” (voltage signal 0 – 5VDC, internal or

external potentiometer) and digital signals “DIR” and “EN”.

· In the simple driver mode: the unit receives signals “STEP”, “DIR” – 0VDC low level and 24VDC high

level, and digital signal “EN”.

· The tracking mode - position control by internal potentiometer or by analog signal 0…5V.

· For synchronized operation of several units and other devices there are 4 digital inputs/outputs/

· There is zero positioning function provided (only in controller mode): start zero search by a command or by

a signal on the digital input. Stop zero searching movement as input signal is received. The function provides

homing by an individual input.

· If “Enable” signal is active motor motion is stopped.