Leeson M1740009.OO User Manual

USER’S MANUAL

M1740009.OO

Pulse-Width Modulated,

Adjustable Speed Drives

for DC Brush Motors

All rights reserved. No part of this manual may be reproduced or transmitted in any
form without written permission from Leeson Corporation. The information and
technical data in this manual are subject to change without notice. Leeson
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.

Printed in the United States of America.

Copyright  1997 by

Leeson Corporation

m Safety Warnings

• Throughout this manual, this symbol m 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.

• Reduce the chance of an electrical fire, shock, or explosion by

proper grounding, over-current protection, thermal protection,
and enclosure. Follow sound maintenance procedures.

• It is possible for a drive to run at full speed as a result of a

component failure. In order to stop the drive in an emergency,
please ensure that a master switch has been placed in the AC
power line.

• This drive is not isolated from earth ground. Circuit

potentials are at 115 VAC above earth ground. Avoid direct
contact with the printed circuit board or with circuit elements
to prevent the risk of serious injury or fatality. Use a non­metallic screwdriver for adjusting the calibration trimpots.

ii

Contents

Specifications 1
Dimensions 2
Installation 3

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Line fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Speed adjust potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Quick-connect terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Voltage follower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Operation 10

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Line starting and line stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Inhibit switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Dynamic braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Calibration 14

MIN SPD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

MAX SPD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

IR COMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Contents

iii

Application Notes 17

Multiple fixed speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Adjustable speeds using potentiometers in series . . . . . . . . . . . . . . . . . . .18

Independent adjustable speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

RUN/JOG switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Reversing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Troubleshooting 22
Block Diagrams 25
Limited Warranty inside back cover

Index of Illustrations

Fig. Description Page

1. Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2. Fuseholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3. Speed Adjust Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

4. Quick-Connect Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

5. Drive Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

6. Voltage Follower Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

7. Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

8. Inhibit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

9. Dynamic Brake Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

10. Typicqal TORQUE and IR COMP settings . . . . . . . . . . . . . . . . . . . . . . . . .16

11. Multiple Fixed Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

12. Adjustable Fixed Speeds Using Potentiometers In Series . . . . . . . . . . . . .18

13. Independent Adjustable Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

14. RUN/JOG Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

15. Reversing Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

16. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

17. Input Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

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
Acceleration Time (with load) 1 second
Deceleration Time (with load) 2 seconds

1

Analog Input Voltage Range (isolated; S1 to S2) 0 – 5 VDC
Input Impedance (S1 to S2) > 100K ohms
Speed Regulation 1% of base speed or better
Ambient Temperature Range 10°C–40°C
Weight 0.6 lb

2

Dimensions

Figure 1. M1740009.OO Dimensions

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

3

calibration trimpots.
Mount the drive away from heat sources. Operate the drive

•

within the specified ambient operating temperature range.
Prevent loose connections by avoiding excessive vibration of

•

the drive.
Mount drive with its board in either a horizontal or vertical

•

plane. Six 0.19 in. (5 mm) wide slots in the chassis accept #8
pan head screws. Fasten either the large base or the narrow
flange of the chassis to the subplate.

The chassis must be earth grounded. Use a star washer beneath

•

the head of at least one of the mounting screws to penetrate the
anodized chassis surface and reach bare metal.

4

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. (46 cm).

• Keep logic wires away from power carrying lines or sources
of electrical noise that can cause erratic operation. Never run
speed adjust potentiometer or inhibit wires in the same conduit
as the motor and AC line voltage wires.

• It may be necessary to earth ground the shielded cable. If noise
is produced by devices other than the drive, ground the shield at
the drive end. If noise is generated by a device on the drive,
ground the shield at the end away from the drive. Do not
ground both ends of the shield.

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. Remove the blown fuse and replace with
a new fuse.

Installation

5

Figure 2. Fuseholder