No Other Drive Offers Higher Performance. 
No Other Drive Offers Broader Functionality.

The Pacific Scientific SCE900 Series family of all-digital servo drives are designed to help you get the most out of your equipment. Offering the highest performance and broadest functionality available, our advanced line includes four models rated for high voltage operation (180-528V ac motor bus input). And provides a range from 5 to 27 kW peak output power at 480V.

With CE-marking and high-voltage capability, our platform addresses a world-wide range of applications. Reliable, modular and flexible, these innovative drives help you remain competitive, increase operator efficiency and reduce engineering time:

• Digital resolver-to-digital conversion provides better control, easier set up, more accurate positioning and makes drift a thing of the past.
• Signature current control gives you smoother low-speed operation without sacrificing high-speed performance.
• Autotuning optimizes drive performance based on specific motor characteristics.
• IGBT PWM Power stage minimizes audible noise and leads to greater efficiency.
• Seven-segment status display provides diagnostic and fault codes.
• Modular communications cards enable multiple communication options, including open SERCOS interface. And you can choose between digital and analog I/O.

All of these features are part of Pacific Scientific's commitment to offering the highest performance products, backed by unmatched customer support and quality, with an ability to offer custom products to fit your unique applications.

THE BASIC DRIVE

The Pacific Scientific SCE900 Series is a family of all-digital servo drives that use a single DSP to close the current, velocity and position loops. All system and application parameters are set digitally to ensure repeatability and eliminate drift. The SCE900 Series is available in five power levels, all with integral power supplies and shunt regulators. The base drive includes several command interface features. A standard ± 10V analog interface commands motor torque or velocity. Step/direction and step up/step down stepper interfaces allow velocity and position commands.

Sample Model Number Code

This chart identifies the components of a typical model number code for SCE900 Drives.

To construct a motor model number code, select the combination of features required and put all the coded information in the proper sequence. Please account for an entry in each field. The model number shown is an example of a properly specified motor.

Drive/Motor Combinations

This table contains recommended pairings of Pacific Scientific SCE900 Drives with PMA and S series brushless servomotors. In matching the SCE900 family with its brushless servomotors, Pacific Scientific engineers analyzed real-world motion control applications and tailored the windings for maximum efficiency. The combination of Pacific Scientific motors and drives results in higher performance and efficiency, delivering more - from .5 to 48.5 Nm - continuous usable torque in your application.

Option Cards for Broad Functionality

A modular design increases functionality and the open architecture ensures that your investment can be upgraded as additional functional enhancements are added. The basic drive, with its impressive features, accepts various option cards to increase its functionality. The good news is you pay only for what you need by selecting the appropriate card.

OC930 Serial Interface Option Card
	RS-232/485 serial interface Access drive from a PC during set-up Facilitates all-digital set-up of current, velocity and position loops Serves as a vehicle for field firmware upgrades Data can be stored on option card or in drive OC930 Hardware and Software Reference Manual. (.pdf format, 501k)
OC940 SERCOS Interface Option Card
	SERCOS Interface - the only open architecture network specifically designed for motion control, synchronous multi-axis protocol Fiber optic connection - speeds and simplifies connections, eliminates complex wiring, immune to external electrical noise, cable lengths up to 100 m between drive and controller possible Eight optically-isolated inputs Eight optically-isolated outputs Torque, velocity and position servo loops are closed locally at the drive OC940 Hardware and Software Reference Manual. (.pdf format, 359k)
OC950 Programmable Single Axis Position Control Option Card
	New Windows(R) development environment - powerful interactive diagnostics ServoBASIC Plus(TM) programming software - eight software-configurable limit switches, full math capabilities, high speed interrupt driven software, cam profiling, popular PLC and HMI protocols available Twenty-one programmable and configurable I/O - connects with Opto 22 Optional PacLAN(TM) local area network - connect up to 255 drives, 2.5 Mbaud ArcNet compatible 32 kBytes NV memory, 128k optional program storage memory OC950 Hardware Installation and Reference Manual. (.pdf format, 453k)