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EC2 sCR Adjustable Speed Drives for DC Brush Motors LINE INPUT 115 VAC INPUT POWER INPUT L2 SCR502 D503 D502 D501 Connect the AC line power to terminals L1 and L2. SCR501 LINE FUSE A1 FUSING + POWER 115 VAC: FUSE L1 (HOT SIDE) EC2 drives require an external fuse for protection. Use fast acting fuses rated for 250 VAC or higher, and approximately 150% of the maximum armature current. Fuse only the HOT line, connected to L1 and leave L2 unfused. MOTOR INHIBIT HEADER FUSE L1 L1 IR COMP S1 S2 S3 INHIBIT MAX SPD Short the INHIBIT pins to coast the motor to stop. Open the INHIBIT terminals to accelerate the motor to set speed. CUR LIMIT ACCEL/DECEL Twist the inhibit wires and separate them from powercarrying wires or sources of electrical noise. Use shielded cable if the inhibit wires are longer than 18 inches (46 cm). If shielded cable is used, ground only one end of the shield to earth ground. Do not ground both sides of the shield. A2 MIN SPD I NHI B I T TE RMI NA LS SHORT THE INHIBIT TERMINALS TO COAST TO A STOP. 10K OHM SPEED ADJUST POTENTIOMETER OPEN THE INHIBIT TERMINALS TO ACCELERATE TO SET SPEED. D I M E N S I O N S All dimensions in inches [millimeters] CW T RIM M E R PO T R A N GE S MIN SPEED 0 - 35 VDC MAX SPEED 45 -120 VDC IR COMPENSATION 0 - 15 V CURRENT LIMIT 0 - 18 A ACC/DEC 0.5 - 8 SEC. S P E C I F I C A T I O N S AC Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115 VAC, single phase Horsepower Range with 115 VAC applied * . . . . . . . . . . . . . . . . . . . . . . .1/8 - 1/2 HP Maximum Armature Current * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 ADC Form Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.37 at base speed Analog Input Voltage Range (signal must be isolated; S1 to S2): . . . . . . . . . . . . . . . . . . . . . . . . . . .0 - 6 VDC Input Impedance (S1 to S2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200K ohms Load Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1% base speed or better * Double maximum armature current and horsepower when drive is mounted on heatsink part number 223-0159. 0.188 [5] SCR502 D503 D502 SCR501 A1 POWER 2.64 [67] 1.75 [44] L1 S1 S2 S3 14300 De La Tour Drive - South Beloit, IL 61080; Phone: (800) MINARIK (646-2745); Fax: (815) 624-6960 Document Number 250-0354, Revision 3; Printed in the U.S.A. – September 2003 HEIGHT: 1.41 [35.8] Copyright 2003 by Minarik Corporation - All rights reserved. No part of this manual may be reproduced or transmitted in any form without written permission from Minarik Corporation. The information and technical data in this manual are subject to change without notice. Minarik Corporation and its Divisions make no warranty of any kind with respect to this material, including, but not limited to, the implied warranties of its merchantability and fitness for a given purpose. Minarik Corporation and its Divisions assume no responsibility for any errors that may appear in this manual and make no commitment to update or to keep current the information in this manual. mvd090803 D501 L2 3.80 [97] 4.30 [109] I N H I BI T A2
