Features

? DC bus voltage 12-35 VDC motor supply (including

ripple)

? Switch selectable motor current from 0.125–2.0

amps/phase

? Switch selectable full or half step

? Switch selectable idle current reduction, 0 or 50

? Optically isolated 5–24 VDC inputs, step, direction

and enable

? Enable input to turn off current to the motor

? On-board oscillator generates step pulses and

accel/decel ramps

? On-board trimpot or external speed adjustment

? Optically isolated 5–24 VDC Tach output for monitoring

speed

? 70 watts of usable power

? Screw terminal connectors

? Dual H-bridge, inaudible PWM amplifier

? 3 state, pulse width modulated current control,

switching at 20–30 KHz

? Drives 4, 6 or 8 lead size 11, 14, 17 or 23 step

motors

? CE compliant

Description

The 2035O step motor driver is a full or half step

drive, step phase sequencer with three state

switching amplifiers and optoisolated circuits.

This drive has a built in ramping pulse generator

(oscillator) with adjustable speed, acceleration

and deceleration. Oscillator speed range is 0–

5,000 Hz. Speed can be set from on-board trimpot

or external pot.

A jumper allows you to select the internal oscillator.

In oscillator mode, the pulse input becomes a run/

stop signal: when this signal is set high, the motor

accelerates to a preset speed and slews. Lowering

the input signal causes the drive to decelerate to

rest.

The amplifier regulates motor current by chopping

at a constant, inaudible frequency. Phase current is

selected from 16 levels by a DIP switch.