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Summary of Contents for Leeson SPEEDMASTER
- Page 1 SPEEDMASTER Variable Speed D.C. Control INSTRUCTION MANUAL This Book Covers Speedmaster Control Numbers 174902 & 174903 LEESON ELECTRIC CORPORATION GRAFTON, WI 53024-0241 U.S.A. TELEPHONE (262)377-8810 FAX (262)377-9025...
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Page 2: Table Of Contents
TABLE OF CONTENTS WARRANTY ........................... 2 INTRODUCTION ........................3 COMMONLY ASKED QUESTIONS ..................3 CONTROL FEATURES ......................4 DIMENSIONS & MOUNTING ....................5 MODEL SELECTION ......................6 WIRING PROCEDURE ......................6 CUSTOMER FUSING ......................6 TERMINAL STRIP WIRING ....................7 HOOK-UP DIAGRAMS ...................... -
Page 3: Warranty
C. LIMITATION of LIABILITY: In the event of any claim for breach of any of LEESON'S obligations, whether express or implied, and particularly in the event of any claim of the... -
Page 4: Introduction
2 HP. • The Speedmaster model has a dual voltage input (may accommodate either 120 or 240 VAC). It is available with an adjustable HP range of 1/8 thru 1 HP for 120 VAC, and 1/4 thru 2 HP for 240 VAC input. -
Page 5: Control Features
CONTROL FEATURES MIN. SPEED (minimum speed) - Allows adjustment of the motor speed when the speedpot is set at minimum (CCW). This permits the user to eliminate the “deadband” on the main speed control permitting zero calibration. Clockwise rotation of “MIN” trimpot increases minimum motor speed. -
Page 6: Dimensions & Mounting
DIMENSIONS Allow 3.50" for height clearance, 7.40" for overall length. 7.000 5.500 .750 7/32 SLOTS (4) TYP. .350 DEEP 5.530 5.125 CAUTION: DO NOT MOUNT CONTROL WHERE AMBIENT TEMPERATURE IS OUT SIDE THE RANGE OF -10 C. (15 F.) TO 45 C. -
Page 7: Model Selection
CUSTOMER FUSING The Speedmaster is provided with a fuse in AC line 1 (P1-11). This fuse is sized to open in the event of a shorted armature or if an armature line is shorted to earth ground. As long as 120 VAC input is connected properly, there is no additional fusing needed. -
Page 8: Terminal Strip Wiring
TERMINAL STRIP WIRING The Speedmaster has an 11 position block type terminal strip for ease of connection. P1-1 (SPEEDPOT LO) Connects to low side (orange wire) of the 5K speedpot (normally the CCW end). This input is raised and lowered by the MIN. trimpot. Electronic speed input (voltage follower) may be referenced to speedpot LO if the MIN trimpot adjustments are to be active. -
Page 9: Hook-Up Diagrams
SPEEDMASTER MODEL 174902 HOOK-UP DIAGRAM HI (white) WIPER (red) I.R. Cur. LO (orange) Accel Comp Lim. DPST SWITCH SPEEDPOT (white) (black) (white) (black) Inhibit INSIDE OF COVER -1 -2 -3 -4 -5 -6 -7 chassis field* ground motor armature ac input BEFORE SCREWING DOWN COVER ASSEMBLY, ROUTE WIRING THROUGH CONDUIT HOLES IN ENDPLATE BY TERMINAL STRIP. -
Page 10: Start-Up & Adjustments
START-UP PROCEDURE WARNING: ALL POWER MUST BE TURNED OFF BEFORE PROCEEDING !!! 1. Recheck all wiring. Accidental grounds, loose or pinched wires on armature or speedpot wires may damage the control when power is applied. 2. Check to see that incoming service is of correct voltage. 3. -
Page 11: Trimpot Adjustment Procedure
TRIMPOT ADJUSTMENT PROCEDURE TRIMPOT FUNCTION ADJUSTMENT SETS MAXIMUM MOTOR 1. TURN DRIVE POWER OFF!! SPEED when speedpot is 2. Connect DC Voltmeter: + to +ARM, - to -ARM. set at maximum (100% rota- 3. Set meter voltage range: (90VDC or 180VDC). tion CW). -
Page 12: Trimpot Setting Chart
SPEEDMASTER TRIMPOT SETTING CHART * THESE SETTINGS APPLY WHEN USING A 5000 OHM MASTER SPEEDPOT. * THIS TRIMPOT CHART IS APPROXIMATE. USE IT IN CONJUNCTION WITH THE ADJUSTMENT PROCEDURES. INPUT OUTPUT MIN MAX ACCEL I.R. C.L. H.P. VOLTAGE VOLTAGE 120VAC... -
Page 13: Two Speed Operation
CONTROL MODIFICATIONS TWO SPEED OPERATION DYNAMIC BRAKING Two pot operation is done using two 10K A DPDT switch is used to inhibit the control and to connect the ohm speed potentiometers in parallel (both DBR. Typical values for the DBR (dynamic brake resistor) are 5 HI's to P1-3, both LO's to P1-1). -
Page 14: Speedpot Dimension Information
SPEEDPOT DIMENSION INFORMATION CUSTOMER'S MOUNTING BRACKET DIALPLATE 2.00" dia. 1.240 SPEEDPOT .500 .370 .370 KNOB HEX NUT 1.250 .250 Dia. O-RING LOCK SPEEDPOT WASHER (5K 2W) .437 5/32 DIA. DIA. SPEEDPOT LOCATOR HOLE DIMENSIONS MAINTENANCE PROCEDURE In normal operation this control needs no routine maintenance. The cover may be cleaned with a mild detergent. -
Page 15: In Case Of Difficulty
TERMINAL STRIP WIRING for (enclosed version) stop correct wiring instructions (note AC line connection in particular) - defective wiring check wiring - defective component call LEESON Distributor / Representative If control still will not operate, consult your LEESON Distributor or Representative. -
Page 16: Specifications
SPECIFICATIONS AC input voltage ..............±10% of rated line voltage Acceleration ..................0.5 to 8.0 seconds Amps - DC output ..............150 mA to 10.8 Amps D.C. Controller overload capacity ............150% for one minute Current limit trimpot range ............. 1.0 to 15.0 Amps D.C. Deceleration (dependent on acceleration time setting) ... -
Page 17: Parts Placement & List
SPEEDMASTER PARTS PLACEMENT & LIST RESISTORS 15K 8W 2.7K 2.7K 1.2M 180K 470K 250K TRIMPOT (ACCEL) 5K SPEEDPOT * 5K TRIMPOT (MIN) 470K 300K 5K TRIMPOT (C.L.) 4.7K 390K 4.7K 150K 50K TRIMPOT (MAX) 100 OHM TRIMPOT (I.R.) .01 OHM 5W... -
Page 18: Schematic Diagram
P1-10 P1-11 SPEEDMASTER SCHEMATIC F1 * P1-8 SPARE .068uf 250V P1-9 SPARE +12V .22uf +12V 250V 275V G-MOV P1-3 180K Q5-3 REMOTE WIPER Q2-2 SPEEDPOT L512F Q5-2 3052 MOC L512F 390 OHM 390 OHM P1-2 .01uf 100V 100K 1 OHM P1-1 .0047uf... - Page 19 Bulletin #301 12/00...
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