TECHNICAL DATASHEET Astrosyn

Astrosyn International Technology Ltd

The Old Courthouse, New Rd Ave, Chatham, Kent, ME4 6BE, England

Tel +44 (0) 1634 815175 Fax +44 (0) 1634 826552 www.astrosyn.com

Model P403A Stepper Motor Driver

General Specification

Model P403A is a high performance microstepping driver suitable for 2-phase and 4-phase hybrid

steppers requiring a drive current of up to 3.5A / phase. The design features an advanced bipolar

constant-current chopper circuit with current control technology. This driver is suited to stepper

motor control applications requiring low noise, low vibration, high speed and high precision.

Key Features



Supply voltage to +40Vdc, current to 3.5A



Inaudible 20khz chopping frequency



TTL compatible and optically isolated input signals



Automatic idle current reduction



Mixed-decay current control for reduced motor heating



15 selectable step resolutions in decimal and binary



Microstepping to 51,200 steps/revolution



Suitable for 4, 6 or 8 lead wire motors



Overcurrent and overvoltage protected



Short circuit protected



Compact size

Additional Specifications

Drive Current:

Adjustable from 1.3A to 3.5A

Supply Voltage:

Input voltage from +24V to +40Vdc

Step Control:

Full step, half step or microstepping

Control Inputs:

Connections for pulse, direction and enable signals

Pulse Signal:

Speed control to maximum frequency 200 kHz

Direction Signal:

Clockwise or counter-clockwise rotation

Enable Signal:

Driver enable or disable

Logic Signals:

Current from 6mA to 30mA

Material:

Black coated aluminium with integral heatsink

Mounting:

Free standing or via mounting holes

Dimensions (WxHxD):

45 x 132 x 76 mm

Mass:

360g