Subscribe to Our Youtube Channel
Related Manuals for Minarik SL-15U
Summary of Contents for Minarik SL-15U
- Page 1 SL-15U Adjustable Speed Control for Bodine Shunt Wound 1/70 and 1/50 HP 115 VDC Motors...
- Page 2 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.
- Page 3 Safety Warnings Note: This symbol denotes an important safety message. Please read these sections carefully before performing any 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.
-
Page 4: Table Of Contents
Table of Contents General Information ..........1 Features . - Page 5 Table of Contents Reversing Circuits ..........24 Reversing with a Toggle Switch .
- Page 6 Illustrations Figure 1. Maximum Speed & Regulation Trimpot Locations ......4 Figure 2. SL15U Connections ...........5 Figure 3.
-
Page 7: General Information
General Information The Model SL15U Minarik adjustable speed control is a full wave, solid state device that is designed to control and vary the speed of Bodine 1/70th and 1/50th HP, 115 VDC shunt wound motors. The control has choke/capacitor filtering to assure the controlled motor will be extra quiet, smooth and cool running. -
Page 8: Features
Features • Choke/Capacitor Filtering • Temperature Compensation • 2% Base Speed Regulation (Typical Application) • Maximum Speed Adjustment • Adjustable IR Compensation • Line Starting and Stopping • Line Voltage Compensation • Full Wave Armature and Field Supply... -
Page 9: Specifications
Specifications Input Voltage 115 VAC, 50/60 Hz Single Phase Maximum Input current 0.9 Ampheres Output Armature Voltage 0 - 115 VDC Output Armature Current 0.25 Amperes Output Field Voltage 100 VDC Output Field Current 0.2 Amperes Weight 8.0 Ounces Ambient Temperature Range 10°... -
Page 10: Dimensional Data
Dimensional Data 2.625 3.000 [67] [76.2] 4.125 [105] 0.1875 [5] 4.500 [114] ALL DIMENSIONS IN INCHES [MILLIMETERS] Figure 1. Maximum Speed & Regulation Trimpot Locations... -
Page 11: Figure 2. Sl15U Connections
GRAY WHITE BROWN 6K SPEED ADJUST 115 VAC 50/60 HZ POTENTIOMETER (neutral) FUSE WITH 1.5 AMP QUICK BLK/WHT VIOLET ACTING FUSE (hot) FIELD ARMATURE 1/50 HP OR LESS 115 VDC SHUNT WOUND MOTOR Figure 2. SL15U Connections... -
Page 12: Installation
Installation The SL15U is an uncased chassis model and is designed to be installed in original equipment. The speed adjust pot (P1) and its mounting hardware is supplied with the control. Mount the speed adjust pot through a 3/8” hole with the insulator disc between the pot and the inside of the panel. - Page 13 Installation Leave enough room around the outer dimensions of the chassis to allow access to the chassis after installation for unmounting, installing wiring, calibration and other related reasons. Connections are to be made to the cable wiring shown in Figure 2 on page 5. WARNING: The SL15U is not isolated from earth ground.
-
Page 14: Alternative Wiring
Installation 2. Connect the motor to its appropriate wires. If the motor rotates in the wrong direction, reverse the motor armature leads. Do NOT plug reverse the motor. 3. Connect the power line to the appropriate wires. The hot leg of the power line should be fused with a fast blow 1.5 amp fuse to protect the control. -
Page 15: Calibration
Calibration Dangerous voltages exist on the printed circuit board. Contact with components and/or printed circuitry could cause serious injury or Warning fatality. Please refer to the Safety Warnings on page i. IMPORTANT: A non-metallic screwdriver should be used when adjusting the trim pots to avoid any possibility of the screwdriver’s blad contacting live circuitry and shorting the circuitry or allowing contact with any dangerous or fatal voltages. - Page 16 Calibration MAXIMUM SPEED ADJUSTMENT This feature is provided to allow the motor speed to be adjusted between 75 to 120% of motor name plate rated speed when the speed adjust knob is set at maximum. REGULATION (IR COMPENSATION) Regulation is obtained by circuitry which raises the armature voltage to maintain speed when increased loading tends to slow the motor down.
-
Page 17: Standard Calibration
Calibration Standard Calibration The control has been factory calibrated and no further adjustments should be necessary. However, since the control was calibrated using a speed adjust pot (P1) of 6K ohms and the pot shipped with the control has a tolerance of ±5%, the maximum speed could be higher or lower than 2500 RPM. - Page 18 Calibration 6. With no load on the motor, apply 115 VAC to the control and advance the speed adjust knob to “100” (full CW). 7. Adjust the MAXIMUM SPEED trim pot for approximately 2500 RPM motor speed at no load. 8.
-
Page 19: Figure 3. Maximum Speed And Regulation Trimpot Locations
Calibration MAXIMUM SPEED REGULATION (IR COMP) Figure 3. Maximum Speed and Regulation Trimpot Locations... -
Page 20: Application Notes
- and no warranty of fitness for purpose is expressed or implied. And further, Minarik Corporation assumes no responsibility for the use of any circuitry described and makes no representation that they are free from patent infringement. -
Page 21: Speed Adjustment
Application Notes Speed Adjustment The speed adjust potentiometer (P1), supplied with the control, is only one of many methods which can be used to control the motor speed. With any alternative methods, these precautions must be followed for proper control operation: a. -
Page 22: Adjustable / Maximum Speed
Application Notes Adjustable / Maximum Speed The addition of a single pole, double-throw switch or relay contact allows a selection of a continuously variable or a fixed maximum speed (see Figure 4 below). This is useful in applications where a fast return to the “home”... -
Page 23: Multiple Fixed Speeds
Application Notes Multiple Fixed Speeds This is accomplished by using a multi-position switch with the correct number of positions for the desired number of fixed speeds and the same number of resistors with a total series resistance of 6K Ohms to replace speed adjust pot (P1). See Figure 5 below. Total Series BROWN Resistance... -
Page 24: Adjustable Speeds In Two Or More Non-Overlapping Speed Ranges
Application Notes Adjustable Speeds in Two or More Non-Overlapping Speed Ranges This is accomplished by replacing the speed adjust pot (P1) with two or more potentiometers connected in series (total series resistance must be 6K Ohms) and a multi-position switch. Illustrated is a connection diagram for two speed control with high and low speed adjust pots. -
Page 25: Multiple Full Range Adjustable Speeds
P1 is used to set the minimum voltage required to start the motor running. If only a grounded signal is available, it can be converted to an ungrounded floating signal with a Minarik PCM4 Process Control Module. See Figure 8, page 20. -
Page 26: Figure 7. Two Full Range Adjustable Speeds
Application Notes BROWN GRAY Figure 7. Two VIOLET Full Range EACH POT 12K OHM Adjustable Speeds 1K OHM BROWN 6K OHM SPEED ADJUST POTENTIOMETER (P1) GRAY To Ungrounded DC Floating Signal VIOLET Figure 8. External Signal Control... -
Page 27: High Speed Range
Application Notes High Speed Range This is accomplished by connecting a 1K Ohm, 5 Watt resistor in series with the motor field winding and the SL15U field power supply, which lowers the voltage to the motor field winding. This lowering of the motor field voltage weakens the motor field and allows the motor top speed to increase to 3150 RPM. -
Page 28: Run / Stop Circuits
Application Notes Run / Stop Circuits Run / Stop Using Normally Closed Contacts This is accomplished by inserting a set of normally closed contacts in series with the violet wire that connects to the speed adjust pot. When the contacts are opened, the motor will coast to a stop. This method is desirable when dynamic braking is not needed with... -
Page 29: Run / Stop Using Normally Open Contacts
Application Notes Run / Stop Using Normally Open Contacts This is accomplished by inserting a set of normally open contacts in parallel with the gray and brown wires that connect to the speed adjust pot. When the contacts are closed, the motor will coast to a stop. -
Page 30: Reversing Circuits
Reversing Circuits To reverse a DC shunt wound motor, the polarity of the armature winding must be transposed with the polarity of the field winding. The normal procedure is to leave the field winding energized and to disconnect and reconnect the armature circuit. IMPORTANT: Plug reversing the motor (not allowing the motor to come to a stop before reversing) will cause excessively high currents to flow in the armature circuit, which can damage the control and/or motor and is... -
Page 31: Reversing With A Toggle Switch
Reversing Circuits Reversing with a Toggle Switch This can be accomplished by using a DPDT, center off toggle switch. When power is applied to the control and the toggle switch is in the center position, the motor is stopped. When the toggle switch is actuated in one direction, the motor will run forward. -
Page 32: Reversing With Relays
Reversing Circuits Reversing with Relays This is accomplished with two 3PDT relays and three momentary operated pushbutton switches (two with normally open contacts and one with normally closed contacts). L1 and L2 supply power to the relay holding circuitry. Normally, if the Forward, Stop, and RELAY Reverse pushbuttons are to be located remotely from the control,... -
Page 33: Dc Shunt Wound Motor Dynamic Braking Theory
Reversing Circuits DC Shunt Wound Motor Dynamic Braking Theory In operation, a shunt wound field DC motor has the field and armature connected in parallel across their respective DC power supplies. The interaction of the magnetic field created by the field winding and the current flowing in the armature winding cuases the motor to run. - Page 34 Reversing Circuits motor to try and reverse itself. In the process of trying to reverse itself, the speed will be rapidly reduced from the original direction and as the speed decreases, so does the CEMF. When the motor reaches zero speed, the CEMF is also zero and the motor has been dynamically braked to a stop.
-
Page 35: Gearmotor Caution
Dynamic Braking Circuit Cautions Gearmotor Caution Care must be taken when using dynamic braking with gearmotors connected to inertial type loads. Forces can be developed which may be destructive to the gearing. IMPORTANT: Dynamic braking is only for fast stopping and NOT for holding a load. -
Page 36: Run/Stop With Dyanmic Braking Using A Toggle Switch
Dynamic Braking Circuit Cautions Run/Stop with Dyanmic Braking using a Toggle Switch This can be accomplished with a SPDT toggle switch and a jumper wire in place of a dynamic braking resistor. Power is applied to the control. When the toggle switch is switched to RUN position, the motor starts running. -
Page 37: Run/Stop Dynamic Braking Using A Relay
Dynamic Braking Circuit Cautions Run/Stop Dynamic Braking using a Relay This can be accomplished with a DPDT relay, two momentary operated pushbutton switches (one normally open and one normally closed) and a jumper wire in place of a dynamic braking resistor. Normally, if the Run and Brake pushbuttons are to be located remotely from the control, a low voltage relay coil is used. -
Page 38: Figure 15. Run / Stop Dynamic Braking Using A Relay
Dynamic Braking Circuit Cautions STOP BLUE ARMATURE JUMPER WIRE YELLOW FIELD Figure 15. Run / Stop Dynamic Braking using a Relay... -
Page 39: Reversing With Dynamic Braking Circuits
Reversing with Dynamic Braking Circuits Reversing with Dynamic Braking using a Rotary Switch This can be accomplished with a 2-pole, 3-position rotary switch and a jumper wire in place of a dynamic braking resistor. When power is applied to the control and the rotary switch is switched to FORWARD, the motor starts running in one direction. -
Page 40: Figure 16. Rotary Switch Reversing With Dynamic Braking
Reversing with Dynamic Braking Circuits 1 FWD 2 BRAKE BLUE 3 REV FIELD YELLOW ARMATURE JUMPER WIRE Figure 16. Rotary Switch Reversing with Dynamic Braking... -
Page 41: Reversing With Dynamic Braking Using Relays
Reversing with Dynamic Braking Circuits Reversing with Dynamic Braking using Relays This can be accomplished with two 3PDT relays, three momentary operated pushbutton switches (two with normally open contacts and one with normally closed contacts) and a jumper wire in place of a dynamic braking resistor. -
Page 42: Figure 17. Reversing With Dynamic Braking Using Relays
Reversing with Dynamic Braking Circuits RELAY RELAY BLUE JUMPER ARMATURE WIRE YELLOW FIELD Figure 17. Reversing with Dynamic Braking using Relays... -
Page 43: Limit Switch Circuits
Limit Switch Circuits Be sure to use some type of override device on the limit switch actuators so that motor coast does not damage limit switches or allow limit switches to deactivate. DYNAMIC BRAKING CIRCUIT CAUTIONS - Care must be taken when using dynamic braking with gearmotors connected to inertial type loads. -
Page 44: Toggle Switch Reversing With Limit Switches
Limit Switch Circuits Toggle Switch Reversing with Limit Switches This can be accomplished with a 3PDT, center off toggle switch and two normally closed limit switches. When power is applied to the control and the toggle switch is in the center position, the motor is STOPPED. -
Page 45: Figure 18. Toggle Switch Reversing With Limit Switches
Limit Switch Circuits BLUE ARMATURE YELLOW FIELD Figure 18. Toggle Switch Reversing with Limit Switches... -
Page 46: Relay Reversing With Dynamic Braking And Limit Switches
Limit Switch Circuits Relay Reversing with Dynamic Braking and Limit Switches This can be accomplished with two 3PDT relays, three momentary operated pushbutton switches (two with normally open contacts and one with normally closed contacts), two normally closed limit switches and a jumper wire in place of a dynamic braking resistor. L1 and L2 supply power to the relay holding circuitry. -
Page 47: Figure 19. Relay Reversing / Braking With Limit Switches
Limit Switch Circuits RELAY RELAY BLUE ARMATURE JUMPER WIRE YELLOW FIELD Figure 19. Relay Reversing / Braking with Limit Switches... -
Page 48: Troubleshooting
Troubleshooting Before proceeding check the following: 1. Be sure the power line is the same voltage as that listed on the control nameplate. 2. Check to see that the line fuse is of the same value as shown on the control nameplate. - Page 49 Troubleshooting I. Heed and follow the SAFETY WARNING at the beginning of the Calibration section (page 8). II. Set speed control pot, P1, at zero on the dial and apply power. If the line fuse blows, disconnect the power and check the following: A.
- Page 50 Troubleshooting III. Connect the motor to the control, apply power, and advance the speed adjust knob to the maximum setting on the dial: A. If the line fuse continues to blow: 1. The motor may be overloaded. a. Disconnect the power from the control. b.
- Page 51 Troubleshooting 4. The filter capacitor (C4), may be shorted. 5. A diode (D2, D3, D4, or D5) may be open causing the fuse to blow at no load or very light load. This may be due to high armature current, or a weak field. 6.
-
Page 52: Parts List
Parts List REFERENCE PART NUMBER DESCRIPTION 010-0020 0.02 MFD 500 VOLT 010-0034 0.15 MFD 100 VOLT 011-0015 50 MFD 6 VDC 011-0018 50 MFD 350 VDC 010-0032 0.1 MFD 500 VOLT 071-0012 1 AMP 600 VDC SILICON DIODE D3-D5 071-0007 3 AMP 600 VDC SILICON DIODE 075-0002 TRANSIENT SUPPRESSOR... - Page 53 820 OHM 1/2 WATT 031-0043 15K OHM 1/2 WATT 031-0012 47 OHM 1/2 WATT 032-0018 3 OHM 5 WATT 164-0054 9 TERMINAL CONNECTOR (MALE) 072-0024 8 AMP 400 VOLT SCR 033-0002 3K OHM THEMISTOR 240-0004 MINARIK CHOKE 071-0002 1N4747 ZENER DIODE...
- Page 54 NOTES...
-
Page 55: Unconditional Warranty
Unconditional Warranty A. Warranty Minarik Corporation (referred to as "the Corporation") warrants that its products will be free from defects in workmanship and material for twelve (12) months or 3,000 hours, whichever comes first, from date of manufacture thereof. Within this warranty period, the Corporation will repair or replace, at its sole discretion, such products that are returned to Minarik Corporation, 901 East Thompson Avenue, Glendale, CA 91201-2011 USA. - Page 56 901 E Thompson Avenue Glendale, CA 91201-2011 Tel: (800) MINARIK or (800) 646-2745 Fax: (800) 394-6334 www.minarikcorp.com Document Number 250-0009, Revision 6 Printed in the U.S.A – 5/01 North America $10.00 Outside North America $11.00...
Need help?
Do you have a question about the SL-15U and is the answer not in the manual?
Questions and answers