Baldor 23H Series Installation & Operating Manual Download

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Section 1
General Information

Introduction

The Baldor Series 23H PWM control uses flux vector technology. Flux vector technology is a closed
loop control scheme using an algorithm to adjust the phase of voltage and current applied to a three
phase permanent magnet synchronous motor. The servo control separates the current into it's flux
and torque producing components. They are independently adjusted and vectorially added to
maintain a 90 degree relationship between them. This produces maximum torque from base speed
down to and including zero speed. Above base speed, the flux component is reduced for constant
horsepower operation.

The control should be sized to the motor using the rated output current of the control.

The Baldor Series 23H control may be used in many different applications. It may be programmed
by the user to operate in four different operating zones; 2.5 KHz PWM or 8.0 KHz PWM constant
torque or variable torque. It can also be configured to function in a number of modes depending
upon what the application requires and user preference.

It is the responsibility of the user to determine the optimum operating zone and mode to interface
the control to the application. These choices can be made through the keypad on the face of the
controller as explained in Section 3 of this manual.

Warranty

BALDOR warrants that the products sold will be free from defects in material and workmanship and
perform to BALDOR's applicable published specifications for a period of two (2) years from the date
of shipment from BALDOR's plant. BALDOR extends this limited warranty to each buyer of the
control for the purpose of resale and to the original purchaser for use. (Use shall be defined as
installation and application of power.) The liability of BALDOR hereunder shall be limited to replacing
or repairing, at its option, any defective units or parts thereof which are returned F.O.B. BALDOR's
plant. In no event shall BALDOR be liable for any consequential or incidental damages.

Equipment or parts which have been subjected to abuse, misuse, accident, alteration, neglect,
unauthorized repair or installation are not covered by warranty. BALDOR shall make the final
determination as to the existence and cause of any alleged defect. No liability is assumed for
expendable items such as fuses. No warranty is made with respect to custom equipment or
products produced to Buyers specifications except as specially stated in writing by BALDOR in the
contract for such custom equipment.

This warranty is the only warranty made by BALDOR with respect to the goods delivered hereunder,
and may be modified or amended only by a written agreement signed by a duly authorized officer of
BALDOR and accepted by Buyer.

Warranty of any product purchased by BALDOR from others is limited in time and scope to any
warranty given BALDOR by such suppliers.

Except as hereinabove provided. BALDOR MAKES NO WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.

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GENERAL INFORMATION

MN723H-10/95 11/28/95 1:04 AM Page 5 (Black plate)