SPD-6B Page

The Step-Pak SPD-6B Stepping Motor Driver is a high efficiency, high performance motor driver. The proprietary bi-polar, bi-level design provides absolutely minimum motor and driver losses which result in cool running motors and drivers, enabling high density packaging of equipment. Low DC voltage is applied to the motor windings when the motor is positioned. High voltage is applied synchronously with motor steps for fast acceleration and high running torque. Most of the switching losses inherent in chopper type drives is eliminated resulting in cooler running motors. The bi-level motor drive produces very low levels of radiated electrical noise which is critical during scientific data collection. When the motor is held at position, no currents are interrupted, therefore there are no radiated electromagnetic fields to interfere with measurements.

SPD-6B Specifications
Form Factor	Step-Pak Module, 43.18mm W x 177.80mm H 330.00mm D
Module Connections	80 Pin PCB Edge Card Connector
Power Connections	48VAC
Motor Connections	4, 6 or 8 Lead Stepping Motors
Limit Inputs	Two Inputs, Front Panel Limits Status Display
Home Inputs	One Input, Front Panel Home Status Display
Idle Current	Internal Low Voltage Jumper Setting
Nominal Low Voltages	4, 6, 8, 10 (Volts)
Running Current	Selectable 0.5, 1, 2, 3, 4, 5, 6 Amps/Winding
Status Output	TTL, High When Normal