does not provide running overload protection

1 Copyright 1992, 1996 by Powertec IndustrialMotors Page iMOTOR protection CONSIDERATIONSAn important consideration when installing the POWERTEC Brushless DC motor and drive is how the motor is to beprotected while in service. The following is a list of the protections built into your POWERTEC motors include an internal thermal switch which provides protection for the motor windings. Inorder to properly protect the motor, this switch MUST be connected to the motor controller as indicated in thedrive instruction manual. The action of the switch opening in the circuit must be such that the drive is shut offbefore damaging temperatures are provides current limiting protection in the drive.

2 This protection is adjustable from 0 to 150%of the motor controller output provides instantaneous overcurrent protection which will shut off the controller if peak currentsgreater than 300% of the RMS rating provides sub-cycle time, fast clearing fuses in the three AC input legs to the drive. An input circuitbreaker may or may not be provided, depending on the options selected at the time of purchase. If a breaker isnot purchased with the drive, the user must supply a means of power disconnection in order to meet therequirements of the National Electric does not provide running overload protection as described in Underwriter s Laboratories Industrial Control Equipment Specification 508.

3 The user is responsible to comply with local codes andpractices. If it is determined that additional protection must be installed, the action of the protection circuit mustbe to shut off the motor SUPPLY LIMITATIONSThis notice is required by Underwriters following notice applies to POWERTEC models 1000, 1000A, 1000AR, 1000 ASR,2000C, 2000CR, 2000 CSR:This device is rated for use on a circuit capable of delivering not more than 5000 rms symmetrical amperes, 500volts following notice applies to POWERTEC models 3000C, 3000CR, 3000 CSR, 3500,3500R, 3500 CSR, 4000, 4000R,4500, 4500R operating at 230 VAC:This device is rated for use on a circuit capable of delivering not more than 10,000 rms symmetrical amperes, 500volts following notice applies to POWERTEC models 3000C, 3000CR, 3000 CSR, 3500,3500R, 3500 CSR, 4000, 4000R,4500, 4500R operating at 380 or 480 VAC.

4 This device is rated for use on a circuit capable of delivering not more than 18,000 rms symmetrical amperes, 500volts iiModel 2000C / 3000C Manual copyright 1992, 1996 by Powertec IndustrialMotors Page iiiMODELS 2000C AND 3000C INSTRUCTION MANUALTABLE OF CONTENTSLIST OF ILLUSTRATIONSiiSUMMARY OF WARRANTYiiiWARNING NOTICEiiiPOWERTEC MOTOR VERSUS REGEN BRUSHLESS DC MOTOR TO USE THIS THE FEEDBACK INPUT AND JOG25 Page ivModel 2000C / 3000C of speed regulation1 methods compared2 power section3 output bridge3 wye motor connections4 drawing of motor4 flow at turn-on5 rotation result5 encoder assembly610.

5 Front view of the Model 2000C811. 2000C Chassis dimensions1112. 3000C Chassis dimensions1213. Standard connections1414. Input power connections1515. Output contactor1616. Digital mode inputs1917. Frequency output20 TABLE OF CONTENTS (continued) (CONTINUED) AND AND POWER SENSOR OUTPUT CONTROLLER PARTS3918. Follower connection2019. Auxiliary RUN relay2020. FAULT relay2121. ENABLE relay2122. ZERO speed relay2123. Chatter elimination2224. SINKING connection to PLC2225. SOURCING connection to PLC2226. Connecting FAULT output to PLC2227. Connections for minimum speed2328.

6 Simplified drawing of power circuits2829. Parts layout of Current Sensor board3030. Layout of Base Driver board3131. Block diagram of the 2000C/3000C3232. Current Controller board layout3333. speed Controller board layout3434. Typical semiconductors3735. Connections to DIGIMAX 438 LIST OF ILLUSTRATIONS copyright 1992, 1996 by Powertec IndustrialMotors Page vWARNING!THE POWERPOWERPOWERPOWERPOWERTEC MODEL 2000C AND MODEL 3000C OPERATENORMALLY AT HIGH VOLTAGE LEVELS WHICH CAN CAUSEINJURY OR DEATH!ONLY PERSONNEL QUALIFIED IN THE MAINTENANCE OF HIGH VOLTAGE, HIGH POWEREQUIPMENT SHOULD WORK ON THESE WORKING ON THIS EQUIPMENT, READ THIS ENTIRE OF WARRANTY AND DISCLAIMERPOWERTEC Industrial Corporation guarantees the Model 2000C and Model 3000C Brushless DC motor controlswhich it manufactures to be free from defects in materials and workmanship for a period of one year from the date oforiginal shipment, or, if purchased from an authorized distributor or original equipment manufacturer, for no more than18 months from the date of original shipment from the factory.

7 Upon written notification to the factory of a defect inmaterials or workmanship in a warranted unit, POWERTEC will, at its sole option, repair or replace at the factory suchdefective parts as it deems necessary to restore the unit to service. Shipping charges to and from the factory, taxes, andduties are the responsibility of the is no other warranty, expressed or implied, including fitness of purpose for the application intended. Thiswarranty does not cover accidental or intentional damage, accidental or intentional abuse, effects from defective orincorrect installation, effects on other equipment, or any other situation over which POWERTEC has no warranty does not encompass any other claims, including, but not limited to, special, incidental, orconsequential manual has been written as a guide to the use of POWERTEC products.

8 It represents the best efforts to compilethe information contained herein. Such mistakes as may appear in no way affect the above stated warranty. If mistakesof fact are found in this manual, please notify your distributor or POWERTEC at SCHOOLSPOWERTEC Industrial Corporation conducts periodic service schools to promote the training and understandingof its customers, representatives, and distributors. These schools are held at the factory in Rock Hill, South at other locations may be arranged with the service two-day school at POWERTEC emphasizes basic concepts, block diagram and schematic study, systemsapplication, and there is a hands on training period.

9 Attendees also tour POWERTEC's modern new facility and meetthe people who serve their is a nominal charge to cover the cost of materials. Also included are two lunches, a dinner, and snacks. Theperson attending is responsible for lodging, other meals, and transportation to and from Rock Hill, SC (20 miles southof Charlotte, North Carolina).For further information,PHONE:803-328-1888or FAX:803-328-1870 Page viModel 2000C / 3000C ManualFigure 0: Mounting dimensions of the Models 2000C NEMA1 and 3000C NEMA1 copyright 1995 byPowertec Industrial MotorsPage 1-1 Traditional AC induction motors must slip (fall behind theirnatural synchronous speed ) in order to develop torque.

10 The synchro-nous speed is determined by the frequency of the power at the motorterminals. At 60 Hertz (the power line frequency in the USA), a fourpole AC induction motor will have a synchronous speed of 1800 a full load on the motor, however, the motor will only be turningat 1740 RPM (curve A in Figure 2), due to the necessity of slip todevelop AC induction motor running near synchronous speed doesnot develop anytorque. The amount ofslip varies with theamount of torquerequired from themotor. Since slip is apercentage of theoperating speed , andthe amount of slipvaries with the load, itis difficult to predictthe speed at which anAC induction motorwill run under anygiven set of operatingconditions whether itis operated across-the-line or on the output of a variable frequencycontrol.