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Section 2
General Information
General Information 2-1MN792
Copyright Baldor 2002. All rights reserved.
This manual is copyrighted and all rights are reserved. This document may not, in whole or in part, be copied or
reproduced in any form without the prior written consent of Baldor.
Baldor makes no representations or warranties with respect to the contents hereof and specifically disclaims any
implied warranties of fitness for any particular purpose. The information in this document is subject to change
without notice. Baldor assumes no responsibility for any errors that may appear in this document.
Microsoft and MS–DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. UL
and cUL are registered trademarks of Underwriters Laboratories.
Overview The Series 29 DC control is a one way control. That is, it is non–regen and cannot reverse direction. It
operates in the forward direction only. All references to reverse operation or regen operation apply to the Series
30 DC Control only. The Baldor Digital DC control is a three phase, full wave, DC motor armature and field
control. The SCR bridge converts three phase AC power to controlled DC to operate the DC motor armature.
The AC input is also used for the reference transformer input to operate power supplies and synchronize to the
AC input line. This control is of the NEMA Type C designation.
The control may also be used with permanent magnet field motors and DC spindle drive motors. In addition,
standard feedback from armature may be used. An optional Encoder, Tachometer or resolver feedback is
available with optional expansion boards. The control can be configured to operate in a number of modes
depending upon the application requirements and user preference.
It is the responsibility of the user to determine the correct operating mode to use for the application. These
choices are made using the keypad as explained in this manual.
CE Compliance A custom unit may be required, contact Baldor. Compliance to Directive 89/336/EEC is the responsibility of the
system integrator. A control, motor and all system components must have proper shielding, grounding, and
filtering as described in MN1383. Please refer to MN1383 for installation techniques for CE compliance. For
additional information, refer to Section 4 and Appendix A of this manual.
Enclosure Sizes Five enclosure sizes are available:
Size 1 15A to 35A
Size 2 40A to 165A
Size 3 180A to 270A
Size 4 380A to 830A
Size 5 850A and larger
Limited Warranty
For a period of one (1) year from the date of original purchase, BALDOR will repair or replace
without charge controls and accessories which our examination proves to be defective in
material or workmanship. This warranty is valid if the unit has not been tampered with by
unauthorized persons, misused, abused, or improperly installed and has been used in
accordance with the instructions and/or ratings supplied. This warranty is in lieu of any other
warranty or guarantee expressed or implied. BALDOR shall not be held responsible for any
expense (including installation and removal), inconvenience, or consequential damage,
including injury to any person or property caused by items of our manufacture or sale. (Some
states do not allow exclusion or limitation of incidental or consequential damages, so the above
exclusion may not apply.) In any event, BALDOR’s total liability, under all circumstances, shall
not exceed the full purchase price of the control. Claims for purchase price refunds, repairs, or
replacements must be referred to BALDOR with all pertinent data as to the defect, the date
purchased, the task performed by the control, and the problem encountered. No liability is
assumed for expendable items such as fuses.
Goods may be returned only with written notification including a BALDOR Return Authorization
Number and any return shipments must be prepaid.