LGP400 SERIES - American Control Electronics
Contents
1. If using a remote potentiometer with a chassis drive 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 If the speed adjust potentiometer wires are longer than 18 in 46 cm use shielded cable Keep the speed adjust potentiometer wires separate from power leads L1 L2 A1 A2 F1 F2 MOUNT THROUGH A 0 38 IN 10 MM HOLE NUT STAR WASHER SPEED ADJUST POTENTIOMETER INSULATING DISK POT TAB ASSIGNMENTS PANEL Figure 3 Speed Adjust Potentiometer LGP400 Series Mounting NEMA 4X Enclosures NEMA 4X cased drives come with two 0 88 inch 22 mm conduit knockout holes at the bottom of the case The units may be vertically wall mounted using the four 0 19 inch 5 mm slotted holes on the attached heat sink For motor loads less than 5 ADC the drive may be bench mounted horizontally or operated without mounting 1 2 Install the mounting screws For access to the terminal strip turn the slotted screw on the front cover counterclockwise until it is free from the case The right side of the cover is hinged to the case Pull the slotted screw to open the case Carefully remove the conduit knockouts by tapping them into the case and twisting them off with plier2. SUGGESTED SOLUTIONS Check that the line fuse is correct for the motor size Check motor cable and armature for shorts Add a blower to cool the drive components decrease TORQUE settings resize motor and drive for actual load demand or i check for incorrectly aligned mechanical components or jams See page 27 for information on adjusting the TORQUE trim pot Increase the speed adjust potentiometer setting or input Verify that the motor is not jammed Increase TORQUE setting if set too low Remove power Connect the motor to A1 and A2 Reapply Calibrate MIN SPD PROBLEM Motor connections to A1 and A2 are reversed Motor runs in i the opposite direction Motor runs too fast Motor will i not reach the desired speed Motor pulsates or surges under Motor bouncing in and out of current limit LGP400 Series SUGGESTED SOLUTIONS Remove power Reverse connections to 1 2 Reapply power Check motor load Resize the motor and drive if necessary Adjust the IR COMP setting slightly CCW until the motor speed stabilizes Make sure motor is not undersized for load adjust TORQUE trim pot CW LGP400 Series Section 8 Accessories amp Replacement Parts Displays Closed Loop CLD100 1 Open Loop OLD100 1 Kits Potentiometer amp Connector Pot Kit KTP 0012 Fuse 2 1 5 Amp 250V 3AG Fast blow Gla
3. 400 Series Speed Adjust Potentiometer For chassis models use a 10K ohm 1 4 W potentiometer for speed control Connect the counter clockwise end of the potentiometer to S1 the wiper to S2 and the clockwise end to S3 If the potentiometer works inversely of the desired functionality e g to increase motor speed you must turn the potentiometer counterclockwise power off the drive and swap the S1 and S3 connections Refer to Figure 4 on page 14 For enclosed models the speed adjust potentiometer is factory installed and prewired Analog Input Signal Instead of using a speed adjust potentiometer the drive may be wired to follow an analog input voltage or current signal that is either isolated or non isolated from earth ground For chassis models connect the signal common to NEG Connect the signal reference to POS Refer to Figure 4 on page 14 For enclosed models connect the signal common to terminal 9 Connect the signal reference to terminal 8 Refer to Figure 5 on page 15 An analog input signal range of 0 10 VDC or 4 20 mA is required to produce an armature voltage range of 0 90 VDC with 115 VAC line voltage or 0 180 VDC with 230 VAC line voltage If using an analog input current signal range of 4 20 mA a 1000 ohm resistor must be placed across RSH Refer to Figure 4 on page 14 LGP400 Series EW 40K OHM SPEED ADJUST POTENTI
4. Add a single pole multi position switch with the correct number of positions for the desired number of fixed speeds CW 5K OHM Figure 12 Adjustable Speeds Using Potentiometers In Series LGP400 Series 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 Figure 13 Independent Adjustable Speeds LGP400 Series RUN JOG Switch Connect the RUN JOG switch and the JOG pushbutton as shown in Figure 14 When the RUN JOG switch is set to JOG the motor decelerates to minimum speed minimum speed is determined by the MIN SPD trim pot setting Press the JOG pushbutton to jog the motor Return the RUN JOG switch to RUN for normal operation SPEED ADJUST POTENTIOMETER NORMALLY CLOSED JOG PUSHBUTTON NORMALLY OPEN JOG PUSHBUTTON Figure 14 RUN JOG Switch LGP400 Series Leader Follower Application In this application use a 150202 1 to monitor the speed of the leader motor Figure 13 150202 1 isolates the leader motor from the follower drive and outputs a voltage proportional to the leader motor armature voltage The follower drive uses this voltage reference to set the speed of the follower motor An optional
5. 3 Adjust MAX SPD until the desired maximum speed is reached Note Check the MIN SPD and MAX SPD adjustments after recalibrating to verify that the motor runs at the desired minimum and maximum speed LGP400 Series Signal Minimum Speed SIG MIN The SIG MIN setting determines the minimum motor speed when the input voltage or current signal is set for minimum speed It is factory set for zero speed To calibrate the SIG MIN Set the SIG MIN trim pot full CCW Set the input voltage or current signal for minimum speed Adjust SIG MIN until the desired minimum speed is reached or is just at the threshold of rotation Signal Maximum Speed SIG MAX The SIG MAX setting determines the maximum motor speed when the input voltage or current signal is set for maximum speed To calibrate SIG MAX 1 Set the SIG MAX trim pot full CCW 2 Set the input voltage or current signal for maximum speed 3 Adjust SIG MAX until the desired maximum speed is reached Note Check the SIG MIN and SIG MAX adjustments after recalibrating to verify that the motor runs at the desired minimum and maximum speed LGP400 Series Torque TORQUE TORQUE should be set to 150 of motor nameplate current rating Continuous operation beyond this rating may damage the motor If you intend to operate beyond the rating contact your American Control Electronics representative for assistance The TORQUE setting determines the maximum torque f
6. 3 and pins 4 and 5 When enclosed models are set to Auto mode they are in Ratio mode MANUAL MODE SIGNAL MODE RATIO MODE oodd o 1 2 5 4 MANUAL SIGNAL MANUAL RATIO SIGNAL RATIO SWITCH SWITCH SWITCH MAN RATIO SIG SIG RATIO Figure 7 Operation Modes LGP400 Series Startup LGP403 10 Turn the speed adjust potentiometer full counterclockwise CCW or set the input voltage or current signal to minimum Apply AC line voltage Slowly advance the speed adjust potentiometer clockwise CW or increase the input voltage or current signal The motor slowly accelerates as the potentiometer is turned CW or as the input signal is increased Continue until the desired speed is reached Remove AC line voltage from the drive to coast the motor to a stop LGP443 3 and LGP443 10 Turn the speed adjust potentiometer to O full CCW or set the input voltage or current signal to minimum Set the POWER switch to the ON position Slowly advance the speed adjust potentiometer clockwise CW or increase the input voltage signal The motor slowly accelerates as the potentiometer is turned CW or as the input voltage or current signal is increased Continue until the desired speed is reached Set the POWER switch to the OFF position to coast the motor to stop LGP400 Series Starting and Stopping Methods Dynamic braking coasting to a stop or decelerating to minimum speed
7. line fuse sizes Cased models come with preinstalled fuses Model LGP443 3 is preinstalled with 5 amp fuses Model LGP443 10 is preinstalled with 15 amp fuses Preinstalled line fuses are rated for maximum horsepower If the horsepower rating of the motor being used is less than the maximum horsepower rating of the drive the line fuse may have to be replaced with a lower rated one Fuses should be rated for 250 VAC or higher and approximately 150 of the maximum armature current Refer to Table 1 on page 10 to install a lower rated fuse LGP400 Series Table 1 Recommended Line Fuse Sizes 180 VDC Maximum DC Motor Armature Current Fuse Size Horsepower Horsepower See Section 10 Accessories and Replacement Parts for fuse kit part numbers LGP400 Series Connections Do not connect this equipment with power applied Failure to heed this warning may result in fire explosion or serious injury American Control Electornics strongly recommends the installation of a master power switch in the voltage input line as shown in Figure 4 page 15 The switch contacts should be rated at a minimum of 200 of motor nameplate current and 250 volts This power switch is provided with NEMA 4X models Power Input For chassis models connect the AC line power leads to terminals L1 and L2 American Control Electronics recommends the use of a single throw double pole master power switch The switch should be rated at a
8. minimum of 250 volts and 200 of motor current Refer to Figure 4 on page 14 For enclosed models connect the AC line power leads to screw terminals 1 L1 and 2 12 115 if using a 115 VAC line or to terminals 1 L1 and 3 L2 230 if using a 230 VAC line Refer to Figure 5 on page 15 Motor Drives supply motor armature voltage from 1 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 If the motor does not spin the desired direction remove power and reverse the 1 and 2 connections For chassis models connect a DC motor to terminals 1 and 2 as shown in Figure 4 on page 14 For enclosed models connect a DC motor to terminals 4 A1 and 5 A2 as shown in Figure 5 on page 15 Ensure that the motor voltage rating is consistent with the drive s output voltage LGP400 Series Field Output Connections The field output is for shunt wound motors only Do not make any connections to F1 and F2 when using a permanent magnet motor WARNING See Table 2 for field output connections Use 18 AWG wire to connect the field output to a shunt wound motor Table 2 Field Output Connections Approximate Field Connect Motor Line Voltage VAC Voltage VDC Field To F1 6 and L1 1 F1 6 and F2 7 F1 6 and L1 1 F1 6 and F2 7
9. ratio potentiometer may be used to scale the 150202 1 output voltage cc 9 92 52 Follower Leader 150202 1 91 Drive z Drive A2 TB502 4 10K Ohm optional Figure 15 Leader Follower Application LGP400 Series Single Speed Potentiometer Control Of Multiple Drives Multiple drives can be controlled with a single speed adjust potentiometer using a 150101 8 at the input of each drive to provide isolation Figure 14 Optional ratio potentiometers can be used to scale the ISO101 8 output voltage allowing independent control of each drive ratio pot A optional 10K Ohms 10K Ohms ratio pot B optional 10K Ohms 180101 8 ratio pot H optional 10K Ohms Figure 16 Single Speed Potentiometer Control of Multiple Drives LGP400 Series Reversing A dynamic brake may be used when reversing the motor direction Figure 17 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 See the Dynamic braking section on page 31 for recommended dynamic brake resistor sizes DYNAMIC DYNAMIC BRAKE RESISTOR RESISTOR SIGNAL INPUT REFERENCE Figure 17 Reversing Circuit Wiring LGP400 Series Section 7 Troublesh
10. 0 Series Section 5 Calibration Dangerous voltages exist on the drive when it is powered When possible disconnect the voltage input from the drive before adjusting the trim pots If the trim pots must be adjusted with power applied use insulated tools and the appropriate personal protection equipment BE ALERT High voltages can cause serious or fatal injury WARNING LGP400 series drives have user adjustable trim pots Each drive is factory calibrated to its maximum current rating Readjust the calibration trim pot settings to accommodate lower current rated motors All adjustments increase with CW rotation and decrease with CCW rotation Use a non metallic screwdriver for calibration Each trim pot is identified on the printed circuit board LGP400 Series Minimum Speed MIN SPD The MIN SPD setting determines the minimum motor speed when the speed adjust potentiometer is set for minimum speed It is factory set for zero speed To calibrate the MIN SPD 1 Set the MIN SPD trim pot full CCW 2 Set the speed adjust potentiometer for minimum speed 3 Adjust MIN SPD until the desired minimum speed is reached or is just at the threshold of rotation Maximum Speed MAX SPD The MAX SPD setting determines the maximum motor speed when the speed adjust potentiometer is set for maximum speed To calibrate MAX SPD 1 Set the MAX SPD trim pot full CCW 2 Set the speed adjust potentiometer for maximum speed
11. AMERICAN CONTROL Xa ELECTRONICS LGP400 SERIES USER MANUAL LGP403 10 LGP443 3 LGP443 10 www americancontrolelectronics com Dear Valued Consumer Congratulations on your purchase of the LGP400 Series drive This User Manual was created for you to get the most out of your new device and assist with the initial setup Please visit www americancontrolelectronics com to learn more about our other drives Thank you for choosing American Control Electronics No part of this document may be reproduced or transmitted in any form without written permission from American Control Electronics The information and technical data in this document are subject to change without notice American Control Electronics makes 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 American Control Electronics assumes no responsibility for any errors that may appear in this document and makes no commitment to update or to keep current the information in this document LGP400 Series Safety First SAFETY WARNINGS Text in gray boxes denote important safety tips or warnings Please read these instructions carefully before performing any of the procedures contained in this manual DO NOT INSTALL REMOVE OR REWIRE THIS EQUIPMENT WITH POWER APPLIED Have a qualified electrical technician install adjust and servi
12. IMENSIONS IN INCHES HL 1 50 38 MILLIMETERS Figure 2 LGP443 3 and LGP443 10 Dimensions LGP400 Series Section 3 Installation applied Failure to heed this warning may result in fire explosion or serious injury Make sure you read and understand the Safety Precautions on page i before attempting to install this product Do not install rewire or remove this control with input power WARNING Mounting Chassis Drive components are sensitive to electrostatic discharge Avoid direct contact with the circuit board Hold the drive by the heat sink only Protect the drive from dirt moisture and accidental contact Provide sufficient room for access to the terminals and calibration trim pots 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 the drive with its board in either a horizontal or vertical plane Four 0 19 5 mm wide slots in the heat sink accept 8 pan head screws The heat sink should be earth grounded Use a star washer beneath the head of at least one of the mounting screws to penetrate the anodized surface and to reach bare metal LGP400 Series Speed Adjust Potentiometer Be sure that the potentiometer tabs do not make contact with the potentiometer s body Grounding the input will cause damage to the drive
13. OMETER AC LINE VOLTAGE 1 9 115 230 RSH Terminals FUSE NOTE Do not add fuse to L2 unless input voltage is 230 VAC SIGNAL COMMON SIGNAL REFERENCE NOTE DO NOT make any connections to F1 and F2 if using permanent magnet motor Figure 4 Chassis Drive Connections LGP400 Series 115 INPUT 7 1 1 1 1 1 1 yv ACLINE Y VOLTAGE 115 230 VAC FIELD COILS NOTE DO NOT make any connections to F1 and F2 if using permanent magnet motor Figure 5 Cased Drive Connections LGP400 Series Section 4 Operation Change voltage switch settings only when the drive is disconnected from AC line voltage Make sure both switches are set to their correct position If the switches are improperly set to a lower voltage position the motor will not run at full voltage and may cause damage to the transformer If the switches are improperly set to a higher voltage position the motor will overspeed which may cause motor damage or result in bodily injury or loss of life Dangerous voltages exist on the drive when it is powered BE ALERT High voltages can cause serious or fatal injury For your safety use personal protective equipment PPE when operating this drive If the motor or drive does not perform
14. act negligence strict liability in tort or otherwise shall not in any event exceed the full purchase price of such equipment Any action against American Control Electronics based upon any liability or obligation arising hereunder or under any law applicable to the sale of equipment or the use thereof must be commenced within one year after the cause of such action arises L zl um CM re ES 1 LGP403 10 LGP443 3 LGP443 10 1 AMERICAN CONTROL ELECTRONICS www americancontrolelectronics com 14300 DE LA TOUR DRIVE SOUTH BELOIT IL 61080 844 AMCNTRL 0014 Rev 0
15. as described disconnect the AC line voltage immediately Refer to the Troubleshooting section page 37 for further assistance Before Applying Power 1 Verify that no foreign conductive material is present on the printed circuit board Ensure that all switches and jumpers are properly set LGP400 Series Select Switches Input Voltage Select SW501 Set the input voltage select switch SW501 to either 115 or 230 to match the AC line voltage See Figure 6 Armature Voltage Select SW502 Set the armature voltage select switch SW502 to either 90 or 180 to match the maximum armature voltage See Figure 6 Input Voltage Select SW501 SiGMN Select SW502 Figure 6 Select Switches LGP400 Series Operation Modes Manual Mode In this mode the control will ignore any signal input and will respond only to the speed adjust potentiometer setting To operate in Manual Mode shorts pins 1 and 2 and pins 4 and 5 Signal Mode In this mode the control will ignore the speed adjust potentiometer setting and will respond only to the signal input To operate in Signal Mode shorts pins 3 and 4 Ratio Mode In this mode the signal input determines the maximum speed while the speed adjust potentiometer sets a ratio This feature is useful in multiple motor applications where it may be necessary to adjust the speed ratio between two or more motors To operate in Ratio mode short pins 2 and
16. ce 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 using proper grounding techniques 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 AN component failure American Control Electronics strongly recommends the installation of a master switch in the main power input to stop the drive in an emergency Circuit potentials are at 115 VAC or 230 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 non metallic screwdriver for adjusting the calibration trim pots Use approved personal protective equipment and insulated tools if working on this drive with power applied LGP400 Series Table of Contents Section 1 Specifications Section 2 Dimensions Section 3 Installation Mounting Chassis Speed Adjust Potentiometer NEMA 4X Wiring Shielding Guidelines Line Fusing Connections Field Output Connections Speed Adjust Potentiometer Analog Input Signal Section 4 Operation Before Applying Power Select Switches Input Voltage Select SW501 Armature Voltage Select SW502 Op
17. eration Modes Manual Mode Signal Mode Ratio Mode Startup LGP403 10 LGP443 3 and LGP443 10 Starting and Stopping Methods Line Starting and Stopping LGP400 Series Dynamic Braking Decelerating to Minimum Speed Section 5 Calibration Minimum Speed MIN SPD Maximum Speed MAX SPD Signal Minimum Speed SIG MIN Signal Maximum Speed SIG MAX Torque TORQUE IR Compensation IR COMP Section 6 Application Notes Multiple Fixed Speeds Adjustable Speeds Using Potentiometers In Series Independent Adjustable Speeds RUN JOG Switch Leader Follower Application Single Speed Potentiometer Control Of Multiple Drives Reversing Section 7 Troubleshooting Before Troubleshooting Section 8 Accessories amp Replacement Parts Unconditional Warranty LGP400 Series List of Tables Table 1 Table 2 Table 3 Recommended Line Fuse Sizes Field Output Connections Minimum Recommended Dynamic Brake Resistor Values List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure Figure Figure Figure Figure Figure Figure Figure BP WNP LGP403 10 Dimensions LGP443 3 and LGP443 10 Dimensions Speed Adjust Potentiometer Chassis Drive Connections Cased Drive Connections Select Switches Operation Modes Dynamic Brake Wiring Run Decelerate to Minimum Speed Switch Recommended TORQUE and IR COMP Settings Multiple F
18. ielding Guidelines Under no circumstances should power and logic level leads be bundled together Induced voltage can cause unpredictable behavior in any electronic device including motor controls As a general rule it is recommended to shield all conductors If it is not practical to shield power conductors it is recommended to shield all logic level leads If shielding of all logic level leads is not practical the user should twist all logic leads with themselves to minimize induced noise 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 If the drive continues to pick up noise after grounding the shield it may be necessary to add AC line filtering devices or to mount the drive in a less noisy environment Logic wires from other input devices such as motion controllers and PLL velocity controllers must be separated from power lines in the same manner as the logic I O on this drive LGP400 Series Line Fusing Chassis drives should be fused for protection Use fast acting fuses rated for 250 VAC or higher and 150 of maximum armature current Fuse HOT L1 only when the line voltage is 115 VAC Fuse both L1 and L2 when the line voltage is 230 VAC Table 1 on page 10 lists the recommended
19. ims any responsibility whatsoever to the customer or to any other person for injury to the person or damage or loss of property of value caused by any product that has been subject to misuse negligence or accident or misapplied or modified by unauthorized persons or improperly installed C Limitations of Liability In the event of any claim for breach of any of Americn Control Electronics s obligations whether expressed or implied and particularly of any other claim or breach of warranty contained in Paragraph A or of any other warranties expressed or implied or claim of liability that might despite Paragraph B be decided against American Control Electronics by lawful authority American Control Electronics shall under no circumstances be liable for any consequential damages losses or expenses arising in connection with the use of or inability to use American Control Electronics s product for any purpose whatsoever An adjustment made under warranty does not void the warranty nor does it imply an extension of the original 12 month warranty period Products serviced and or parts replaced on a no charge basis during the warranty period carry the unexpired portion of the original warranty only If for any reason any of the foregoing provisions shall be ineffective American Control Electronics s liability for damages arising out of its manufacture or sale of equipment or use thereof whether such liability is based on warranty contr
20. is recommended for frequent starts and stops Do not use any of these methods for emergency stopping They may not stop a drive that is malfunctioning Removing AC line power both lines is the only acceptable method for emergency stopping For this reason American Control Electronics strongly recommends installing an emergency stop switch on both AC line inputs see Figure 4 on page 14 Frequent starting and stopping can produce high torque This may cause damage to motors especially gearmotors that are not properly sized for the application Automatic Restart Upon Power Restoration All drives automatically run to set speed when power is applied and the inhibit is not active Line Starting and Stopping Line starting and stopping applying and removing AC line voltage is recommended for infrequent starting and stopping of a drive only When AC line voltage is applied to the drive the motor accelerates to the speed set by the speed adjust potentiometer or analog signal When AC line voltage is removed the motor coasts to a stop LGP400 Series Dynamic Braking Wait for the motor to completely stop before switching back to RUN This will prevent high armature currents from damaging the motor or drive Dynamic braking may be used to rapidly stop a motor Figure 8 on page 22 For the RUN BRAKE switch use a two pole two position switch rated for at least the armature voltage rating and 150 of the arma
21. ixed Speeds Adjustable Speeds Using Potentiometers in Series Independent Adjustable Speeds RUN JOG Switch Leader Follower Application Single Speed Potentiometer Control of Multiple Drives Reversing Circuit Wiring Section 1 Specifications LGP400 Series Maximum Armature Current ADC LGP403 10 LGP443 10 DC Armature Voltage with 115 VAC Line Voltage with 230 VAC Line Voltage Field Voltage with 115 VAC Line Voltage with 230 VAC Line Voltage Analog Input Range Input Impedance S1 to 52 Speed Range HP Range with 90 VDC Motor HP Range with 180 VDC Enclosure Chassis NEMA 4X 0 180 VDC 50 VDC F1 to L1 100 VDC F1 to F2 100 VDC F1 to L1 200 VDC F1 to F2 Vibration 0 5G maximum 0 50 Hz 0 1G maximum gt 50 Hz Safety Certifications UL cUL Recognized Equipment File E132235 PCM23411A CSA Certified Component File LR41380 Ambient Temperature Range Chassis Drive Cased Drive 10 C 55 C 10 C 40 C LGP400 Series Section 2 Dimensions 6 90 175 0 70 18 6 30 160 2 30 58 Ji ALL DIMENSIONS IN INCHES MILLIMETERS Figure 1 LGP403 10 Dimensions 6 90 175 LGP400 Series 6 30 160 C wmm PXA ELECTRONICS wore 1 40 36 H 1 45 37 1 50 38 ALL D
22. ooting Dangerous voltages exist on the drive when it is powered When possible disconnect the drive while troubleshooting High voltages can cause seroius or fatal injury Before Troubleshooting Perform the following steps before starting any procedure in this section Disconnect AC line voltage from the drive Check the drive closely for damaged components Check that no conductive or other foreign material has become lodged on the printed circuit board Verify that every connection is correct and in good condition Verify that there are short circuits or grounded connections Check that the selection switch settings are correctly set Check that the drive s rated armature is consistent with the motor ratings For additional assistance contact your local American Control Electronics distributor or the factory direct 800 AMCNTRL or FAX 800 394 6334 LGP400 Series PROBLEM Line fuse blows Line fuse does i not blow but the motor does i notrun Motor does not stop when the i speed adjust i potentiometer is full CCW Motor cable or armature is shorted to ground Nuisance tripping caused by a combination of ambient conditions and high current spikes i e reversing Speed adjust potentiometer or input signal is set to zero Drive is not receiving AC line voltage Motor is not connected MIN SPD is set too high 3
23. or accelerating and driving the motor To calibrate TORQUE refer to the recommended TORQUE settings in Figure 10 on page 29 or use the following procedure With the power disconnected from the drive connect a DC ammeter in series with the armature Set the TORQUE trim pot to minimum full CCW Set the speed adjust potentiometer full CW or input voltage signal to maximum speed Carefully lock the motor armature Be sure that the motor is firmly mounted Apply line power The motor should be stopped Slowly adjust the TORQUE trim pot CW until the armature current is 150 of motor rated armature current Turn the speed adjust potentiometer CCW or decrease the input voltage signal Remove line power Remove the stall from the motor Remove the ammeter in series with the motor armature if it is no longer needed LGP400 Series IR Compensation IR COMP The IR COMP setting determines the degree to which motor speed is held constant as the motor load changes Use the following procedure to recalibrate the IR COMP setting 1 Set the IR COMP trim pot to minimum full CCW 2 Increase the speed adjust potentiometer or input voltage signal until the motor runs at midspeed without load for example 900 RPM for an 1800 RPM motor A handheld tachometer may be used to measure motor speed Load the motor armature to its full load armature current rating The motor should slow down While keeping the load on the motor ro
24. s Set the POWER switch to the OFF position before applying the AC line voltage Install conduit hardware through the 0 88 inch 22 mm knockout holes Connect external wiring to the terminal block Grasp the slotted screw and tilt the front cover back into place Avoid pinching any wires between the front cover and the case Turn the slotted screw clockwise until tight to secure the front cover LGP400 Series Do not install rewire or remove this control with input power applied Failure to heed this warning may result in fire explosion or serious injury Circuit potentials are at 115 or 230 VAC above ground To prevent the risk of injury or fatality avoid direct contact with the printed circuit board or with circuit elements Do not disconnect any of the motor leads from the drive unless power is removed or the drive is disabled Opening any one motor lead while the drive is running may destroy the drive This product does not have internal solid state motor overload protection It does not contain speed sensitive overload protection thermal memory retention or provisions to receive and act upon signal from remote devices for over temperature protection If motor over protection is needed in the end use product it needs to be provided by additional equipment in accordance with NEC standards Use 18 24 AWG wire for logic wiring Use 14 16 AWG wire for AC line and motor wiring LGP400 Series Sh
25. ss Fuses KTF 0001 2 3 Amp 250V 3AG Fast blow Glass Fuses KTF 0002 2 5 Amp 250V Fast blow Glass Fuses KTF 0003 2 8 Amp 250V 3AG Fast blow Glass Fuses KTF 0004 2 10 Amp 250V 3AB Normal blow Ceramic Fuses KTF 0005 2 15 Amp 250V 3AB Normal blow Ceramic Fuses KTF 0006 Logic Cards Current Sensing CMC100 5 CMC100 20 Isolation Cards Unidirectional 8 outputs 150101 8 Bidirectional 1 output 150202 1 LGP400 Series Unconditional Warranty A Warranty American Control Electronics warrants that its products will be free from defects in workmanship and material for twelve 12 months or 3000 hours whichever comes first from date of manufacture thereof Within this warranty period American Control Electronics will repair or replace at its sole discretion such products that are returned to American Control Electronics 14300 De La Tour Drive South Beloit Illinois 61080 USA This warranty applies only to standard catalog products and does not apply to specials Any returns of special controls will be evaluated on a case by case basis American Control Electronics is not responsible for removal installation or any other incidental expenses incurred in shipping the product to and from the repair point B Disclaimer The provisions of Paragraph A are American Control Electronics s sole obligation and exclude all other warranties of merchantability for use expressed or implied American Control Electronics further discla
26. tate the IR COMP trim pot until the motor runs at the speed measured in step 2 If the motor oscillates overcompensation the COMP trim pot may be set too high CW Turn the IR COMP trim pot CCW to stabilize the motor 5 Unload the motor See Figure 10 on page 29 for recommended IR COMP settings MODELS LGP403 10 LGP443 10 IR COMP TORQUE COMP 1 HP 90 VDC 10 AMPS 1 8 HP 90 VDC 1 25 AMPS TORQUE COMP MODEL LGP443 3 1 4 HP 90 VDC 2 50 AMPS 1 8 HP 90 VDC 1 25 AMPS 1 10 HP 90 VDC 1 00 AMP TORQUE COMP LGP400 Series 2HP 180 VDC 10 AMPS 1 HP 180 VDC 5 AMPS 1 4 HP 180 VDC 1 25 AMPS 1 2 HP 180 VDC 2 50 AMPS 1 4 HP 180 VDC 1 25 AMPS 1 6 HP 180 VDC 1 67 AMP Figure 10 Recommended TORQUE and IR COMP Settings actual settings may vary with each application LGP400 Series Section 6 Application Notes Multiple Fixed Speeds Replace the speed adjust potentiometer with a series of 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 R1 R2 TOTAL SERIES RESISTANCE R3 10K OHMS R4 Figure 11 Multiple Fixed Speeds LGP400 Series Adjustable Speeds Using Potentiometers In Series Replace the speed adjust potentiometer with a series of resistors with a total series resistance of 10K ohms Figure 12
27. ture current rating For the dynamic brake resistor use a 40 watt minimum high power wirewound resistor Sizing the dynamic brake resistor depends on load inertia motor voltage and braking time Use a lower value higher wattage dynamic brake resistor to stop a motor more rapidly Refer to Table 3 on page 22 for recommended dynamic brake resistor sizes LGP400 Series Table 3 Minimum Recommended Dynamic Brake Resistor Values 15 ohms 180 VDC 30 ohms For motors rated 1 17 horsepower and lower a brake resistor is not necessary since the armature resistance is high enough to stop the motor without demagnetization Replace the dynamic brake with 12 gauge wire DYNAMIC BRAKE Wiper of Speed Adjust Potentiometer Figure 8 Dynamic Brake Wiring LGP400 Series Decelerating to Minimum Speed The switches shown in Figure 9 may be used to decelerate a motor to a minimum speed If using a speed adjust potentiometer closing the switch between S1 and S2 decelerates the motor to minimum speed If using an analog input signal opening the switch in line with the signal input will decelerate the motor to minimum speed If the MIN SPD trim pot is set full CCW the motor decelerates to zero speed 10K OHM SPEED ADJUST POTENTIOMETER DECEL TO MIN SPEED DECEL TO MIN SPEED e _ SIGNAL INPUT REFERENCE RUN Figure 9 Run Decelerate to Minimum Speed Switch LGP40
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