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Minarik DLC500 User Manual

Digi-lok programmable digital control
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USER'S MANUAL
Model DLC500
DIGI-LOK ® Programmable Digital Control

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Summary of Contents for Minarik DLC500

  • Page 1 USER’S MANUAL Model DLC500 DIGI-LOK ® Programmable Digital Control...
  • 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 • 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

    DLC500 calibration ........
  • Page 5 DLC500 program parameters worksheet ......28 Entering the programming mode ....... .29 Viewing the programming screens .
  • Page 7 Introduction Minarik’s DLC500 control is used with variable speed drives to produce closed-loop digital systems capable of controlling motor speed precisely and with excellent reproducibility. The DLC500 includes these benefits: Excellent speed regulation: 0.05% speed regulation of set speed for tight control.
  • Page 9 Specifications AC Line Voltage 115 VAC or 230 VAC, ±10%, 50/60 Hz, single phase AC Line Power 5.5 watts nominally Acceptable Feedback Sources 5 VDC or 12 VDC NPN-type encoder 5 VDC or 12 VDC NPN-type proximity switch Hall effect sensor Electromagnetic pickup Maximum Reference Voltage of Drive +10 VDC...

  • Page 11: Dimensions

    Dimensions Figure 1. DLC500 Dimensions...

  • Page 13: Installation

    Caution Variable speed DC drives manufactured by other companies may require hookup procedures that differ from those given in this manual. Contact your local Minarik branch or distributor for assistance. A schematic diagram and the manufacturer’s instruction for interfacing the drive with an external speed-setting signal may be required before the correct wiring scheme can be determined.

  • Page 14: Wiring Guidelines

    *Minarik considers this an unfavorable condition and does not recommend bundling of power and logic leads for any length. If it is not practical to shield power conductors, Minarik recommends shielding all logic-level leads. If shielding is not practical, the user should twist all logic leads with themselves to minimize induced noise.

  • Page 15: Drive Compatibility

    Opening any one motor lead may destroy the drive. Drive compatibility The DLC500 is compatible with drives that have a positive voltage reference only (the speed adjust potentiometer wiper has a positive potential relative to its counterclockwise side). Most...

  • Page 16: Panel Installation

    Installation Panel installation Step 1. Cut a rectangular hole in the panel 1.78 inches (45 mm) high, and 3.38 inches (86 mm) wide.
  • Page 17 Installation Step 2. Slide the DLC500 into the panel opening.
  • Page 18 Installation Step 3. Insert the two mounting brackets into each side of the DLC500 case.
  • Page 19 Installation Step 4. Secure the DLC500 to the panel using the bracket screws.

  • Page 20: Feedback Device Selection

    4000 RPM, the selected feedback device must produce 30 or fewer pulses per revolution. The DLC500 can control armature shaft speeds within a 30:1 range. Under no circumstances can the DLC500 be expected to...

  • Page 21: Rear Panel Selector And Dip Switches

    The switches are visible when the nameplate is removed. The slide switch on the left rear of the DLC500 (Figure 2) is the line voltage switch. Set this switch to the left position for 115 VAC input, or to the right for 230 VAC input.
  • Page 22 Installation The dip switches on the right rear of the DLC500 (Figure 3) are the supply voltage and feedback switches. DIP switch 1 is for supply voltage selection. Set this ON for +12 VDC, or OFF for +5 VDC. DIP switches 2 and 3 are for feedback device selection.

  • Page 23: Connections

    S3 to drive terminal S0. For this reason, connect DLC500 terminal S1 to drive teminal S0, and DLC500 terminal S2 to drive terminal S2. Set the drive MIN SPD trimpot full CCW. Make no connection to drive terminals S1 and S3. Refer to Figure 5.

  • Page 24: Output Terminal Connections To Xp-Ac Series Drives

    C. The voltage at the + lead is determined by the DIP switch setting (see Figure 4). Inhibit terminal (INH) Short INH to common (C) to inhibit the DLC500. The DLC500 output will reduce to 0 volts. Remove the short to resume operation. Refer to Figure 5.
  • Page 25 Installation Connections to non-regenerative SCR drives Note: Refer to Figure 5 for connections to Minarik regenerative and XP-AC series drives. Contact your Minarik sales representative for assistance. Figure 4. Non-Regenerative Drive Connections...
  • Page 26 Installation Alternative DLC500 connections DLC500 connections to regenerative drives DLC500 connections to XP-AC series drives Inhibit connections DLC500 Figure 5. Alternative DLC500 connections...

  • Page 27: Calibration

    Calibration 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. Figure 6. Calibration Trimpot Layout...

  • Page 28: Drive Calibration

    Calibration Drive calibration Calibrate the drive for use with the DLC500. The purpose is to optimize the response on the drive to the DLC500 signal and to minimize any tendency by the drive to independently attempt to regulate motor speed. The following are the drive’s trimpot...
  • Page 29 Slowly adjust the MIN OUT trimpot until the motor just stops. 4. Set the DLC500 speed to 120% of maximum desired motor speed as outlined in steps 2–5 above. Where step 4 indicates that the DLC500 is to be set to zero, substitute the DLC500 maximum output setting.
  • Page 30 DLC500 trimpot settings do not interfere with the normal range of motor operation. 5. The motor should run at the DLC500 maximum setting. If it does not, adjust the MAX OUT trimpot until the motor runs at that speed.

  • Page 31: Programming

    All parameters except gate time must be programmed into the DLC500. Speed scaling factor The speed scaling factor (SSF) correlates the digital speed set at the DLC500 with the speed (in RPM) desired at the feedback shaft. The SSF equation is (speed entry)(3000) SSF =...

  • Page 32: Load Response Number

    The load response number range is 0 through 30. The factory setting is 8. Display scaling factor The display scaling factor (DSF) correlates the speed displayed by the DLC500 with the speed at the feedback shaft. The DSF equation is: (speed display)(3000) DSF =...

  • Page 33: Gate Time

    Decimal point location number The decimal point location number fixes the decimal point within the DLC500 display. The DLC500 may be set for no decimal point, or for a decimal point in the tenths, hundredths, or thousandths position. The factory setting is for no decimal point.

  • Page 34: Dlc500 Program Parameters Worksheet

    Programming DLC500 program parameters worksheet 1. Find the equation variables. PPR = ____________ speed entry = ____________ Do not use the decimal point. For example, use 1254 if the speed entry is actually 1.254 meters per second or 12.54 liters per minute.

  • Page 35: Entering The Programming Mode

    Warning! Disconnect power to the drive and DLC500 prior to entering programming mode. 1. Press and hold the ENTER pushbutton (labeled E) while applying AC power to the DLC500. Do not apply power to the drive. 2. Release the ENTER pushbutton after AC power is applied.

  • Page 36: Entering Calculated Program Parameters

    Programming Entering calculated program parameters 1. Press ENTER until the display shows one decimal point in the lower right corner. 2. Press the up and down pushbuttons until the calculated speed scaling factor is displayed. 3. Press ENTER until the display shows the second decimal point.

  • Page 37: Save The Program Settings And Exit To The Operation Mode

    Programming Save the program settings and exit the programming mode 1. Press and hold the ENTER pushbutton. 2. Press the UP pushbuttons to exit to the program mode. Repeat steps 1 and 2 if you are still in the programming mode. If a numeral is flashing, press ENTER repeatedly until all digits stop flashing.

  • Page 38: Set The Speed

    7. Press ENTER once. The least significant digit will blink. 8. Use the up and down pushbutton to set the desired value for this digit. 9. Press ENTER once to return to the operating mode. 10. Remove power to the DLC500.
  • Page 39 Programming 11. Reconnect the drive and apply power to the DLC500 and drive simultaneously. 12. The motor will accelerate to the set speed. 13. To change the set speed, repeat steps 1 through 9.

  • Page 41: Programming Examples

    Shaft RPM = 100 (same as speed entry) (100)(3000) (speed entry)(3000) SSF = = 100 (100)(30) (shaft RPM)(PPR) (speed display)(3000) (100)(3000) = 100 DSF = (shaft RPM)(PPR) (100)(30) gate time = DSF = 2 seconds These are the standard program parameters for the DLC500.
  • Page 42 Programming Examples Example 2. An application uses a 60 tooth magnetic pickup mounted on a motor shaft. The application requires that the motor speed and the display to be equal to the speed entry. Calculate the program parameters. Solution: PPR = 60 Speed entry = 100 (arbitrarily chosen) Speed display = 100 (same as speed entry) Shaft RPM = 100 (same as speed entry)
  • Page 43 Programming Examples Example 3. An application uses a 30 tooth magnetic pickup mounted on a motor shaft that is part of an exercise treadmill. The pulley is driving a belt that has a radius of 4 inches. The application requires the user to enter the speed in miles per hour, and the display to read in miles per hour.
  • Page 44 Programming Examples gate time = DSF = 0.06 second The gate time is too small. We may introduce a decimal point on the display. The user could enter 100 which would appear as 10.0 miles per hour on the display. The speed entry and speed display numbers in the formulae now become 100.
  • Page 45 Programming Examples Example 4. An application uses a 30 tooth magnetic pickup mounted on the high speed shaft of a gear motor. The gear ratio is 40:1 and the high speed RPM is 1800. The user will enter the speed of the low speed shaft. The speed of the low speed shaft will show on the display.
  • Page 46 Programming Examples Recalculating the program parameters: (100)(3000) (speed entry)(3000) SSF = = 25 (400)(30) (shaft RPM)(PPR) (speed display)(3000) (100)(3000) = 25 DSF = (shaft RPM)(PPR) (400)(30) gate time = DSF = 0.5 seconds This is much more acceptable. Note that there is no error due to rounding here because the SSF and DSF came out to be whole numbers.
  • Page 47 DLC500 system. The more common problems are described below. Should your DLC500 fail to operate as it should after you have taken the suggestions found in this section, contact your Minarik branch or distributor for technical assistance. You may also contact the factory directly by phone (702) 823-9475 or fax (702) 823-9495.
  • Page 48 The gap between the sensing tip and the gear tip should be no greater than 0.010 inches. 4. Electrical noise may cause the DLC500 to attempt corrections that are not justified. Check the continuity and shielding of the pickup leads.
  • Page 49 Troubleshooting 2. Verify that the drive’s common terminal is connected to the DLC500’s S1 terminal (if the drive does not have its own clamping resistor). If the drive has a clamping resistor, leave the DLC500 terminal S1 open. The motor runs at top speeds regardless of the set speed 1.
  • Page 50 Notes...
  • Page 51 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 from date of manufacture thereof. Within this warranty period, the Corporation will repair or replace such products that are returned to Minarik Corporation, 901 East Thompson Avenue, Glendale, CA 91201-2011 USA.
  • Page 52 901 East Thompson Avenue Glendale, California 91201-2011 Tel: (702) 823-9475 Fax: (702) 823-9495 www.minarikcorp.com Document number 250–0258, Revision 2 Printed in the U.S.A – 3/99 $12.00 North America, $13.00 Outside North America...

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