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Summary of Contents for Leeson M1740009.OO
- Page 1 USER’S MANUAL M1740009.OO Pulse-Width Modulated, Adjustable Speed Drives for DC Brush Motors...
- Page 2 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. Leeson 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.
- Page 3 Safety Warnings • Throughout this manual, this symbol denotes an important safety message. Please read these sections very carefully before performing any of the instructions contained in this manual. • Have a qualified electrical maintenance technician install, adjust and service this equipment. Follow the National Electrical Code and all other applicable electrical and safety codes, including the provisions of the Occupational Safety and Health Act (OSHA), when installing equipment.
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Page 4: Table Of Contents
Contents Specifications Dimensions Installation Mounting ...........3 Wiring . - Page 5 Contents Application Notes Multiple fixed speeds .........17 Adjustable speeds using potentiometers in series .
- Page 6 Index of Illustrations Fig. Description Page Dimensions ..........2 Fuseholder .
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Page 7: Specifications
Specifications Model M1740009.OO AC Line Voltage 115 VAC, ±10%, 50/60 Hz, single phase Horsepower Range (with 130 VDC motors) 1/20 – 1/3 HP Armature Voltage 0 – 130 VDC Maximum Continuous Armature Current 2 ADC Form Factor (at base speed) 1.05... -
Page 8: Dimensions
Dimensions Figure 1. M1740009.OO Dimensions... -
Page 9: Installation
Installation Mounting • Drive components are sensitive to electrostatic fields. Avoid direct contact with the circuit board. Hold drive by the chassis only. • Protect the drive from dirt, moisture, and accidental contact. Provide sufficient room for access to the terminal block and calibration trimpots. -
Page 10: Wiring
Installation Wiring • Use 18 AWG wire for speed adjust potentiometer wiring. Use 16 AWG wire for motor and AC line voltage wiring. • Twist logic wires (for speed adjust potentiometer and inhibit) to avoid picking up unwanted electrical noise. Use shielded cable if wires are longer than 18 in. -
Page 11: Line Fuse
Installation Line fuse The M1740009.OO drive is protected by a 5 A, 250 V AC line fuses. The fuse does not have to be resized as long as the motor used is within the drive’s specified horsepower range. The fuse is mounted in the fuseholder (see Figure 2). To replace a blown fuse, use a screwdriver to turn the fuseholder knob counterclockwise. -
Page 12: Speed Adjust Potentiometer
Installation Speed adjust potentiometer Mount the speed adjust potentiometer through a 0.38 in. (10 mm) hole with the hardware provided (Figure 3). Install the circular insulating disk between the panel and the 10K ohm speed adjust potentiometer. Twist the speed adjust potentiometer wire to avoid picking up unwanted electrical noise. -
Page 13: Quick-Connect Terminal Block
Installation Quick-connect terminal block The quick-connect terminal block has an 8-pin header block and 8-screw terminal plug (Figure 4). To use the quick-connect terminal block: 1. Carefully pull terminal plug from header block. 2. With a small flat-head screwdriver, turn terminal plug screw counterclockwise to open wire clamp. -
Page 14: Connections
Installation Connections Figure 5. Drive Connections ASSUMPTIONS: This drive series supplies motor voltage from its A1 and A2 terminals. It is assumed throughout this manual that when A1 is positive with respect to A2 , the motor will rotate clockwise (CW) while looking at the output shaft protruding from the front of the motor. -
Page 15: Voltage Follower
Installation Voltage follower Instead of using a speed adjust potentiometer, the drive may be wired to follow a 0–5 VDC voltage signal that is isolated from earth ground (Figure 6). Connect the signal input (+) to S2. Connect the signal common (–) to S1. Make no connection to S3. A potentiometer can be used to scale the analog input voltage. -
Page 16: Operation
Operation Startup Note: Before applying power, verify that no conductive material is placed on the printed circuit board. To start the drive: 1. Turn the speed adjust potentiometer full counterclockwise (CCW). If the drive is following a voltage signal, set the voltage signal to 0 VDC. -
Page 17: Diagnostic Leds
Operation Diagnostic LEDs This drive is equipped with two diagnostic LEDs: power status (PWR) and current limit mode (CUR LIM). See Figure 7 for LED location. POWER (PWR): Green LED lights whenever AC line voltage is applied to the drive. CURRENT LIMIT (CUR LIM): Red LED lights whenever the drive reaches current limit. -
Page 18: Inhibit Switch
Operation Inhibit switch An inhibit switch allows the motor to decelerate to zero speed when the switch is closed. Connect a single pole, single throw switch between H1 and H2 (see Figure 8). Close the switch to decelerate the motor to zero speed. Open the switch to accelerate the motor to set speed. -
Page 19: Dynamic Brake Connection
Operation Figure 9. Dynamic Brake Connection A 1 Ω, 1 W resistor is used as the dynamic brake resistor. For motors rated horsepower and lower, a dynamic brake resistor is not necessary since the armature resistance is high enough to stop the motor without demagnetization. -
Page 20: Calibration
Calibration Each drive is factory calibrated to its maximum horsepower rating. Readjust the calibration trimpot settings to accommodate lower horsepower motors. All adjustments increase with CW rotation, and decrease with CCW rotation. Use a non-metallic screwdriver for calibration. Each trimpot is identified on the printed circuit board. MINIMUM SPEED (MIN SPD) The MIN SPD setting determines the motor speed when the speed adjust potentiometer is turned full CCW. -
Page 21: Ir Comp
Calibration Note: Check the MIN SPD and MAX SPD adjustments after recalibrating to verify that the motor runs at the desired minimum and maximum speed. REGULATION (IR COMP) The IR COMP setting determines the degree to which motor speed is held constant as the motor load changes. It is factory calibrated for a 1/8 HP, 90 VDC motor. -
Page 22: Typicqal Torque And Ir Comp Settings
Calibration 1. With the power disconnected from the control, connect a DC ammeter (0–15 A minimum scale) in series with the armature. 2. Set the TORQUE trimpot to minimum (full CCW). 3. Connect power to the drive. The motor should remain stopped. 4. -
Page 23: Application Notes
Application Notes Multiple fixed speeds Replace the speed adjust potentiometer with series resistors with a total series resistance of 10K ohms (Figure 11). Add a single pole, multi-position switch with the correct number of positions for the desired number of fixed speeds. Figure 11. -
Page 24: Adjustable Speeds Using Potentiometers In Series
Application Notes Adjustable speeds using potentiometers in series Replace the speed adjust potentiometer with a single pole, multi-position switch, and two or more potentiometers in series, with a total series resistance of 10K ohms. Figure 12 shows a connection for fixed high and low speed adjust potentiometers. Figure 12. -
Page 25: Independent Adjustable Speeds
Application Notes Independent adjustable speeds Replace the speed adjust potentiometer with a single pole, multi- position switch, and two or more potentiometers in parallel, with a total parallel resistance of 10K ohms. Figure 13 shows the connection of two independent speed adjust potentiometers that can be mounted at two separate operating stations. -
Page 26: Run/Jog Switch
Application Notes RUN/JOG switch Using a RUN/JOG switch is recommended in applications where quick stopping is not needed and frequent jogging is required. Use a single pole, single throw switch for the RUN/JOG switch, and a single pole, normally closed, momentary operated pushbutton for the JOG pushbutton (see Figure 14). -
Page 27: Reversing
Application Notes Reversing A dynamic brake may be used when reversing the motor direction (Figure 18). Use a three pole, three position switch rated for at least the maximum DC armature voltage and maximum braking current. Wait for the motor to stop completely before switching it to either the forward or reverse direction. -
Page 28: Troubleshooting
Troubleshooting Warning Dangerous voltages exist on the drive when it is powered. When possible, disconnect the AC line voltage from the drive while troubleshooting. Be alert. High voltages can cause serious or fatal injury. Before troubleshooting Perform the following steps before starting any procedure in this section: •... - Page 29 Troubleshooting Motor does not run 1. Check for blown fuses or tripped circuit breaker. 2. Verify that the speed adjust potentiometer is not set to zero speed position. 3. Verify that the inhibit terminals (H1 and H2) are not shorted together.
- Page 30 Readjust the IR COMP setting slightly CCW until motor speed is stabilized. Motor only runs at full speed Check that S2 and S3 are not shorted together. For additional assistance, contact your local Leeson distributor, or the factory direct: phone (414) 377-8810, fax (414) 377-3440.
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Page 31: Block Diagrams
Block Diagrams Figure 16. Block Diagram... -
Page 32: Input Circuit Diagram
Block Diagrams Figure 22. Input Circuit Diagram... - Page 33 Notes...
- Page 34 Notes...
- Page 35 Limited Warranty A. Warranty - Leeson Corporation (referred to as “the Corporation”) warrants that its products will be free from defects in workmanship and material for one (1) year or 3,000 hours, whichever comes first, from date of shipment thereof. Within this warranty period, the Corporation will repair or replace such products that are: (1) returned to Leeson Corporation, 2100 Washington Street, Grafton, WI 53024-0241 USA;...
- Page 36 2100 Washington Street Grafton, WI 53024-0241U.S.A. Phone: (414) 377-8810 Fax: (414) 377-3440 Document Number 250-0256, Revision 0 Printed in the U.S.A – 4/96 U.S.A. $12.00, Canada $13.00...
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