User`s Manual
Contents
1. drive so that make the voltage ripple of input power as small as possible Choose the thick wire for power connection lines Moreover important in wiring is that the line should be twisted In case when the 2 or more drives are connected at one power supply be sure to connect power for drive direct from power supply separately and for easy cooling make the room at 3cm between the drives and power Serial connections are worst power connection 7 4 Cooling The enclosure of CSMD drive is a heatsink which allows for heat dissipation produced by the internal components During operation the heatsink will become warm to the touch and should not be a concern to the user An internal temperature sensor will shut down the drive if the internal air reaches 70 C internally If this Over Temperature fault condition exists the alarm LED will be illuminated and the drive alarm out will be active Additional air cooling devices are not required except where ambient temperatures are high or high current motors are used Consult the factory if these conditions exist The most fundamental rule to follow concerning proper cooling of the devices is to keep the heatsink surface temperature less than 70 c Since the drive is convection cooled it is recommended that you allow a minimum of 3 cm on all sides for airflow Operating in an enclosure area may require external cooling in order to keep the heatsink temperature less than 70 C As a rule of2. The motor stalls at high speeds Motor RUN current is not set correctly Motor is undersized for the application Check DIP switches verify that motor current is set correctly Check the load conditions The motor stalls during acceleration Motor current is not set correctly The acceleration is set too high There is insufficient rotor inertia Motor is undersized for the application Check the RUN current select switches and verify that the current is set correctly Decrease the acceleration Add inertia to the motor shaft Verify that the motor is sized correctly The motor unloaded stalls at There is insufficient rotor inertia Add inertia to the motor shaft nominal speed The motor does not move the The motor resolution is set incorrectly Ensure that the drive resolution setting is correct commanded distance The drive moves the motor in the wrong direction The motor is not wired to the drive properly The pulse output circuit of controller does not match the input photocoupler circuit of drive Verify motor connections Swapping motor leads A and A at the drive connector to change direction if necessary Check input pulse timing and logic carefully Rotation speed and torque is different at CW CCW motion The pulse type selection SW is not correctly set Check that pulse type selection is same as that of controller Motor does not rotate smoothly The RUN cur
3. 4 5 51200 25000 102400 50000 PULSE TURN PULSE TURN Lal m a POWER SAVE ON POWER SAVE OFF on O 1 N ml oo 123 4 5 4 5 CW CCW MODE DIR PULSE 2 PULSE MODE Ori 1 PULSE MODE 123 4 5 Fig 6 Mode selection switch 3200 1000 PULSE TURN 25400 10000 PULSE TURN 6 Input Pulse Timing Chart 6 1 direction pulse input cw ccw input Controller outpu Drive Open collector CW pulse direction Direction CW tN X i precion 330 7 25mA Max Pulse CCW M ulse pulse direction 25mA Max Indicate the signals of 2 pulse type input Controller output Drive CW PULSE Open collector Vo T CW pulse direction i y we NAA IA tO VV ii R Direction 990 i D Direction CW nn ff bA Se YWV Max k ulse pulse Wy ae CCW PULSE Pulse CCW i zal i 25mA Max Uff WIT Indicate the signals of 2 pulse type input Fig 7 Input pulse timing chart lt GENERAL gt ALL available logic inputs have two possible input states which will be referred to as High and Low When a logic terminal is open it is in a Hig
4. functions properly when operated independently The motor should be disconnected from the load to isolate the drive from possible load related problems You may have to dismantle your system then reassemble and test each component piece by piece to detect the problem The following list of symptoms causes and corrections may help to guide the user through a problem solving session Resonance exists in all step motor and is a function of motor s mechanical construction It can cause the motor to stall at low speeds Most full step motor controllers jump the motor to a set minimum starting speed that is greater than the resonance region The Convex microstep capability allows you to operate a motor smoothly even at low speeds Motor that will not accelerate past 1 rps may be stalling due to resonance You can add inertia to the motor shaft by putting a drill a chuck on shaft The drill chuck may provide enough inertia to test the motor when it is not loaded In extreme cases a viscous damper may also be needed If the motor fails to move you should test the motor with an ohmmeter to examine the resistance between the motor connections If the motor is not malfunctioning the source of the problem is probably within the drive If you operate a faulty drive with a reliable motor you may damage the motor If you find that the motor is not faulty remove power and remove motor from the drive Use the following steps to test the motor Remo
5. thumb if you are not able to measure interior temperature of drive the heatsink temperature is within limits if you can comfortably hold your finger on it more than 3 seconds Generally step motors are rate at 100 C maximum allowable case temperature When connected in parallel motors can overheat if operated at high speeds for extended periods of time Actual temperature rise is duty cycle dependent Providing forced air cooling for motors will extend duty cycles but no case should the motor be allowed to exceed the rated maximums In normal operating condition as the heating in motor and drive depends mostly on operating conditions such as normal operating speed and ratio between run time and stop time The worst case is that motor is programmed to run continuously at low speed In that case external cooling should be required 7 5 connection examples Drive Drive Controll ontroller Controller Dir CM Dir ON Pulse CCW Black Black Green ej F White Oriental motor Blue White Yellow BESESSESOEEEESES 15 36 e IAEA Oriental motor For Bipolar type drive B440 type do not use A_com B_com Fig 9 simple and minimum connection for test 13 In case when collector voltage for pulse is not 5V as shown in Fig 9 external resistor should be inserted so that the current through dr
6. vertical motion moving carriage may fall slowly Itis recommended that STOP CURRENT is set as low as possible through experiments The drive can be configured for automatic low power The current supplied to the motor windings will be reduced to a certain value specified STOP CURRENT SET 100 msec after motion is complete This operation is excellent to help 7 control heating and reduce power consumption when not in motion For example Current drive RUN CURRENT is set 3A and STOP CURRENT is set 40 Then the motor current in motion is 3A and 100 msec after motor stop the motor current will become 3A x 40 1 2A When the frequency of drive input pulse is less than 0 1pps 0 1Hz as the run current is alternating at every pulse input motor torque is also alternating In this application set the resolution of drive higher and apply input pulse of higher frequency scomesrserse EEE e E ck ERIE i E E s A 2 BUDTE a ell J Gia i ae DEUDE ee l U a E i CIC EUT e aT so T 0 MEI tai osa a Al iC f Cl Fig 4 Run Current Set value stop current set ON 1 ON 1 T Fig 5 Stop current set value 5 3 pulse type selection switch CAUTION Frequent mistakes occur Be sure to read this manual carefully and set correctly If this switch is set incorrectly motor rotates only one dir
7. Manual no CSMD2_440CE ENG 991127 CONVEX Microstep Driver FOR 2PH Step Motor CSMD2 U440 UNIPOLAR DRIVE CSMD2 B440 BIPOLAR DRIVE USERS GUIDE Bool STOR et A eee 2PH MICROSTEP DRIVER p CONVEX monsr driver series he a 3 mrt iE f r i p z a gt b a as 6 D 3 u a a y M he HE FEMTE TT DORUREOODE ji o DENE PMT s stom ined edge tl lees ld win See TON lt CONTENTS gt 1 Safety Cautions P 2 2 Unpacking and Inspection P 3 3 Drive Configuration P 4 4 Mounting P 5 5 Drive Current and Mode set P 7 6 Input Pulse Timing Chart P 10 7 Connection and Wiring P 12 8 Trouble Shooting P 15 9 Specifications P 17 Thank you for choosing the Convex Microstep Drive CSMD2 series Please read this manual carefully so that the equipment is used to its optimum A copy of this manual should be forwarded to the end user 1 Safety Cautions You must read these cautions before using the product In connection with the use of this product in addition to carefully reading this manual it is also essential to pay attention to safety and handle the product correctly These SAFETY CAUTIONS are classified into two grades DANGER and CAUTION DANGER DANGER safety caution given when incorrect handling could result in hazardous situations involving the possibility of death or serious injury CAUTION CAUTION safety caution giv
8. ad lengths Should the drive need to be positioned more than 2 m from motor consult the factory for the availability of motors with longer lead lengths 4 3 dimensions lt Unit mm gt 2PH MICROSTEP DRIVER ff Q CONVEX motor driver series MODEL NO CSMD2 U440 TEK ElectroMechanics Technology PHOTOCOUPLER INPUT OUTPUT RESISTER 330 OHM od MORE INFORMATION SEE MANUAL MADE IN KOREA reset Motor Free 1 1 Z L O TEK ElectroMechanics Technology Fig 3 drive dimension for mounting 5 Drive Current and Mode set DANGER Switch the power off before current and mode set Electric shock and damage for drive may occur Before use or operation be sure to carefully read this set method to prevent the drive and mechanical equipment from being damaged CAUTION To prevent the electric shock or drive fail use the insulated material to set drive dip switches The drive has three sets of dip switch The first set will be referred to as RUN CURRENT set the second set as STOP CURRENT set and the third set as MODE SELECTION Factory default settings are for 6400 pulses motor 1 revolution Dir pulse 1 pulse mode 1 0A RUN CURRENT 30 STOP CURRENT 5 1 RUN CURRNT set switch CAUTION Never increase the current setting to more than 10 greater than the current specified for t
9. ase mounting panel incorrect installation could result in malfunctions failure or detachment 4 1 environmental considerations Indoor use only Operating temperature 0 c 40c In case when the surface temperature of the case of drive reaches 70 C external cooling is crucially needed Do not use this drive in the place where drive can be easily contaminated by fluid such as water and oil easily The place where easy cooling is possible Do not use this drive under the circumstance of continuous vibration and mechanical shock Mount drive using shock absorbing material Do not use this drive under the presence of radiation magnetic field or in vacuum In case when there is unacceptable large noise special cautions about shielding grounding and wiring will be required 4 2 drive attachment The Convex drive is a self contained package requiring minimal concern for mounting methods and positions A dimensional outline of CSMD2 series is given in Fig 3 The recommended mounting position is vertical with the heatsink exposed to allow convection and heat removal from the drive It is recommended that you allow a minimum of 3 cm on all sides for airflow The user should refrain from mounting where the heatsink is unexposed or where easy access to the connectors or adjustments is not practical In general the drive should be positioned close to the motor although step motors are fairly tolerant of long le
10. ay include manual and drive Immediately report any discrepancies to the shipping location 3 Drive Configuration Part name and Its Function CWw Dir PHOTOCOUPLER INPUT OUTPUT MORE INFORMATION SEE MANUAL MADE IN KOREA RESISTER 330 OHM 3 te 3 66 O gt Eo 1 9 Fig 1 drive up side view for part name 3 1 LED indicate name LED color illumination condition 3 lt POWER Power on Green When the power is supplied normally 3 ALARM alarm state Red When abnormal state occur such as over current arm short over heat abnormal motor connection 3 2 connectors indication name function amp y DIR Dir 1 pulse mode Direction of Rotation MODE dip sw 1 off CW 2 pulse mode Clockwise pulse MODE dip sw 1 on amp PLS Pls 1 pulse mode Pulse input MODE dip sw 1 off CCW 2 pulse mode Counterclockwise pulse MODE dip sw 1 on Alarm Alarm out When drive is abnormal state with Alarm LED on between will be Low Impedance Reset Reset input Input for drive alarm release and motor free Motor Free input condition Apply 8 20mA current through At moment that current flow drive reset and in state that current flow motor is in free state T MOTOR Motor winding connector Drive ou
11. ctor is measured as Volt then the diode current is calculated as 5 volt 1 volt 1 2 volt photocoupler diode on voltage 330 ohm 8 5 mA This may cause the malfunction of drive Make the voltage of connector be zero 6 2 drive control signal FAULT out RESET MF in Controller output Drive Open collector Vo 1 Reset Motor Free VR H AWe y L Motor free reset at the 330 4 C x state positive edge Reset MF Way ene i 25mA Max Alarm out 330 J YV Alarm la yoo F Wr la H Drive Alarm state P y 25mA Max L ja flows r Motor free state Fig 8 Drive in out signal for control The drive has one dedicated hardware fault output The output is an optically isolated open collector transistor The Fig 8 is a schematic showing the optically isolated fault output Refer to Fig 8 the alarm output transistor is normally cut off state The transistor turns on when alarm occurs The following conditions will cause alarm output to turn on LJ over current Current limit is 8A for 4A drive J overheat heat limit is 70 C at the case L arm short short between power and motor connectors between motor connectors L motor wire is not properly connected Reset input can be used Motor free signal input As shown in Fig 8 the drive alarm is reset at the negative falling edge of reset output of controller and the drive cuts off motor po
12. ection or CW CCW rotation speed is different at same input pulse speed 5 4 power save ON OFF switch The power save function is helpful to reduce motor and drive heating input power dissipation So that in general general applications be sure to use this function power save on off switch is on But in case when the motor is applied at vertical motion and there is some sliding at motor stop state and IN POSITION control power save function is OFF 8 5 5 microstep resolution set switch The resolution means the number of pulses per motor one turn For example if current drive resolution is 6400 then it means that drive requires 6400 pulses for motor to rotate 1 turn and 6400pps input made motor turn at the speed of rps revolution per sec The drive allows the user the versatility to select a microstep resolution that best matches his application requirements For a standard 1 8 step motor there are 8 selectable resolutions that range from 800 to 102400 pulses decimal type 400 50000 pulses per revolution Refer to the following Fig 6 and determine the resolution best meets your need and set switches as indicated 4 o L PULSE TYPE SELECTION 800400 is 1600 500 POWER SAVE ON OFF PULSE TURN PULSE TURN ft 1 MICROSTEP RESOLUTION 2 3 5 ojm E 6400 2000 12800 5000 PULSE TURN PULSE TURN 2
13. en when incorrect handling could result in hazardous situations involving the possibility of moderate or light injury or damage to property Note that depending on the circumstances failing to follow a CAUTION may also have very serious consequences Both of these classes of safety caution are very important and must be observed Store this manual carefully in a place where it is accessible for reference whenever necessary and forward a copy of the manual to the end user DANGER lt GENERAL gt Use the drive in the environment specified in this manual Using it in an environment which does not meet the general specifications could cause electric shock fire or malfunctions and damage or deterioration of the drive Power off before installing or removing the drive Electric shock and damage to drive may occur If there is overloaded condition the step motor may stop abruptly or stall When the motor stalls the holding torque is very small So that when the motor is applied in vertical motion before operation be careful to calculate the load effect lt CONNECTIONS gt Connect correctly according to the connection diagram in this manual Electric shock and fire may occur The cable should not have excessive force applied to it and should not be bent beyond a 2 5cm radius of curvature during normal operation Electric shock excessive noise and fire may occur Never connect disconnect the motor from the d
14. h state by default since it is clamped High internally with a pull up resistor Pulse input pulse cw ccw The motor will step on the rising edge of each incoming pulse up to a rate of 500kHz kpps The minimum input pulse width is microsecond Direction Dir A High or open connection on this terminal would cause a clockwise CW rotation of the motor as viewed from the output shaft end When taken Low the direction will be counterclockwise CCW The direction input may be switched while the motor is rotating but may cause the motor to loose synchronism if operating above its Start Stop torque capability The inputs are optically isolated and may be driven by providing a negative signal with respect to the input The output driver of controller must be capable of providing a minimum sink current of 10mA to ensure proper operation When the output pulse type of controller is Line Driver connect signal directly to the connectors of drive 10 Use the twisted pair cable for pulse inputs of drive If you don t have twisted pair cable twist the pulse input lines The line for pulses should be made as short as possible for electric noise immunity For proper operation when the input photo diode is on drive pulse input current should be 10mA 25 mA Check the current as follows For example the power supply voltage for pulse input is 5V the voltage of conne
15. he motor you are using Excessive current may cause the motor to overheat and result in motor failure It is recommended that drive RUN current be set as same as rated motor phase current The motor torque increases according to RUN CURRENT set value However do not set run current larger than motor rated phase current the motor will run roughly and may overheat The first thing that you must do is set the RUN current on the drive to match the motor that you are using Use the directions below to set the dip switch for your motor If the closest current is within 10 of the rated current it will probably suffice for most applications Current settings 10 greater than the rated value should not be used unless special cooling precautions are taken or intermittent operation allows for In general If the run current of drive is set lower than motor phase current less heating in motor low audible noise and more smooth motion of motor can be achieved but the motor torque will be smaller thanthe rated torque of the motor So that if you want the motor to move more smoothly then select higher torque motor and apply lower current 5 2 STOP CURRENT set CAUTION Do not set STOP CURRENT level unnecessarily high High STOP CURRENT causes heating of motor and drive and finally it shortens the life of them If STOP CURRENT level is set too low at the moment of start and stop motor can make a shock impact on machines or in
16. ive pulse or direction circuit is less than 25mA Recommend when 5V R no 12V R 1Kohm 1 5Kohm 24V R 2Kohm 2 4Kohm If the motor is turns in the opposite direction from the desired direction after you connect motor wires to the drive you can change the direction by reversing the leads going to A and A on the motor connector 7 6 POWER ON DANGER Do not supply power to the drive without having all of the motor leads firmly connected to their appropriate terminals Connect center tap wires to Phase COM_A and COM_B as required connect the motor s shield to the terminal provided When the main power of factory or laboratory is OFF by various reasons be sure to turn OFF the local power for step drive The abrupt start of machine may occur when the main power OFF state is released During 30 sec after main power OFF do not contact the connectors of drive There will be remained diminishing power If power is left on the drive will break down or malfunction CAUTION When the power applied properly POWER ON LED is illuminated Once the drive is properly mounted and all of the required connections have been made the drive may be powered up Initial power should be applied with no pulses being fed to the drive The motor will lock into position at its rated static torque If the automatic low power mode has been selected then statistic torque will decrease to STOP level of its rated static torque af
17. n motor fault LED is off The motor run current is set too low The motor winding or cable is open The Auto Power save is enabled Motor free is enabled Check the RUN current select switches and verify that the RUN current is set correctly Check motor and cable with an ohmmeter Check the STOP current select switches and verify that the STOP current is set correctly Disconnect the cables at Motor free connector of the drives The motor fault LED is on The motor cable is disconnected or not strongly fastened The motor cable is incorrectly connected at the drive The drive has detected a motor wiring short circuit The internal drive temperature is greater than 70 C Check the motor cable Check the motor wires are correctly connected according to their diagram Check the motor and cable wiring Remove drive cooling obstructions or add fan cooling to the drive Excessive electrical noise Verify the drive case is properly grounded earthing The motor moves erratically at low speeds Motor current is set incorrectly One motor phase open Motor resolution is set for 200 or 400 steps per revolution Check the RUN current select switches and verify that the current is set correctly With motor connector removed from the SX use an ohmmeter to measure continuity of motor windings Full and half step modes will cause the motor to run roughly at low speeds Use microstep resolution
18. nally it shortens the life of motors During operation modifying set switch of the drive may cause electric shock or drive failure lt OTHERS gt During the power on do not contact the conduct area of the connectors When external force or torque is applied to motor shaft motor regenerates the electric power So that do not make the situation that after motor wires are attached at drive the shaft of motor is rotation over 1000rpm For example when the motor is applied to open the door of machine and power is OFF to open the door by hand will make the motor run over 1000rpm Generally motor running at 1000rpm generates the power of 40volt Repair disassemble and hardware modifications can be made only in factory Users are not allowed to make such actions Dispose of this product as industrial waste 2 Unpacking and Inspection Carefully remove the contents of the carton in which the drive was shipped Inspect the carton and the drive and make note of any apparent physical damage If severe defect is present then you should consider rejecting the shipment and making contact with shipping company considering in transit damage claims We have made every effort at the factory before shipment to fully inspect test and properly package this product so that it reaches you defect free and without damage All packaging materials should be saved and set aside in case a return shipment has to be made The contents m
19. nnectors on the drive Shield the motor cable and ensure that the shield is taken to a low impedance earth ground Earth the motor casing to a low impedance earth ground Mount equipment that is sensitive to EMI as far as possible from the drive and motor 7 2 Frame Ground FG DANGER The case of drive is electrically isolated with interior circuit by 0 1 uF capacitor for Earth So you can use the case for Earth Be sure to connect the earth to enhance the drive noise immunity When you connect the Earth with wire Use the thick wire and connect shortly If the panel is conductor that is connected at the earth of the main power additional earth for drives is not required 7 3 power supply for drives CAUTION Make the capacity of the power supply for drive sufficiently large If possible the output current of power supply is at least one half larger than the run current set value of drive If the capacity of power is not sufficient for the drive and motor to run drive may break down For example current motor phase current is 2A and RUN CURRENT of drive is set as 2A then the output current of power supply is at least 3A if possible choose 4A Power input voltage is 12 36Volt The torque at high speed increases as the magnitude of input voltage Be sure that the peak input voltage is less than 36 volt Also as the magnitude of ripple voltage of input power determines the life of 12
20. rent is set high Th pulse output is not correctly received in drive The motor makes a mechanical impact at the edge of motor start and stop The STOP current is set too low The torque is small when motor stops The STOP current is set too low 16 9 Specifications Model no CSMD2 U440 CSMD2 B440 Power input Excitation method Output current Microstep resolution Input pulse type Control input Control out Function Protection LED display Temperature Weight Dimension DC 12V 36Volt Constant current PWM unipolar U440 bipolar B440 1 4A motor 1 phase 800 1600 3200 6400 12800 25600 51200 102400 500 1000 2000 4000 5000 10000 20000 50000 Dir pulse 1 pulse mode CW CCW 2 pulse mode Reset Motor free photocoupler isolated Alarm out photocoupler isolated Automatic power save Over heat over 70 C over current arm short Power on Alarm 0 c 40 c 0 4 Kg 145 x 105 x 20 UNIT mm Factory CONVEX Co S B I b 203 Dungchon Dong 647 26 Kangseo Ku Seoul Korea 157 030 TEL 82 2 3664 6345 82 2 3662 3223 FAX 82 2 3662 3224 Email convex2k chollian net
21. rive when power is applied If you do the motor connector may be damaged Power should never be applied to the drive when all wires of motor are not connected Verify that there are no wire whiskers that can short out the motor connections Never probe the drive Never connect anything other than the motor to the motor terminals Probing or opening the drive in any other way will void the warranty Hazardous voltages are present within drive The terminal interface will be broken if you open the drive The terminal interface is critical to reliability of the drive The case of drive is electrically isolated with interior circuit by 0 1 uF capacitor for Earth So you can use the case for Earth Be sure to connect the earth to enhance the drive noise immunity When you connect the Earth with wire Use the thick wire and connect shortly lt OPERATIONS gt Never increase the current setting to more than 10 greater than the current specified for the motor you are using Excessive current may cause the motor to overheat and result in motor failure Before operation read carefully this manual After power OFF set Current and Mode selection When the drive generate the heat excessively high case temperature 70 C OFF the power immediately and check if STOP CURRENT level is unnecessarily set high if the mounting is effective for cooling Do not contact any material to modify drive set switches in operation When the main po
22. t to motor windings For B440 bipolar drive donot connect A_com B_ com POWER Power input DC 12 Volt 36Volt Caution Power polarity FG Frame Ground Case of drive is Frame Ground FG 3 3 Dip switch name and function STOP RUN MODE aranean nnn o o 10 11 12 1314 Fig 2 side view for dip switch selection indication name Initial function see setting STOP STOP current level selection 30 lImsec after motor stops motor current is down as 30 c RUN RUN current value selection 0 9A phase Drive supply set current to motion in rotation a MODE Input pulse type selection 1 pulse mode OFF 1 pulse type SW no 1 dir pls mode ON 2 pulse type lt POWER Power save ON OFF ON ON automatically power saved SAVE OFF always 100 power lt 3 MODE microstep resolution selection 6400 Selection for microstep resolution SW no 3 5 Pulse Motor of motor amp drive 1 Revolution 4 Mounting DANGER Do not use the drive in explosive inflammable caustic circumstance Fire or drive fault may occur Switch the power off before installing or removing the drive Electric shock and damage for drive may occur Only qualified service and installation personnel should mount this device Electric shock may occur CAUTION Do not place the other controller or material on the drives Install the drive correctly in the holes of b
23. ter 1 msec Once the input pulse rate begins the motor should begin to step in the step direction At this point If the motor does not have any torque or will not properly rotate refer to Section 8 for troubleshooting and possible remedies Do not make abrupt stop the motor unnecessarily The regenerated power of motor in sudden stop may break down the drives When the abnormal operations or emergency occur check the general points listed in the last chapter of this manual The motor torque increases according to RUN CURRENT set value However do not set run current 10 larger than motor rated phase current it will causes the more vibration mechanical noise and excessive heating in motor Finally it shortens the life of motors To prevent the electric shock or drive fail use the insulated material to modify the dip switches of drive During operation modifying set switch of the drive may cause electric shock or drive failure In any condition the surface temperature of motor should be less than 100 C 8 Trouble Shootings If a problem occurs or your system does not function properly the operator should immediately turn off and disconnect all power to the drive before attempting any troubleshooting or repair Only when you have identified and isolated the problem you can effectively begin to resolve the problem Initial step in troubleshooting is to isolate each system component and verify that each component
24. ve power from the system Detach the motor from the drive With the motor detached from the system use an ohmmeter to check the resistance between A and A_com and between A and A_com it should be approximately the same as resistance shown in motor catalog Now use the ohmmeter to check the resistance across Phase B according to the same method in the resistance across Phase A and Phase B should be nearly identical for bipolar motor check the resistance between A and A B and B Use the ohmmeter to check the resistance between Phase A and Phase B It should be infinite Use the ohmmeter to check the resistance between Phase A and Earth the motor case shaft It should be infinite Use the ohmmeter to check the resistance between Phase B and Earth the motor case shaft It should be infinite Turn the shaft manually There should not be any torque Common Problems and Solutions The following table contains common problems probable cause and solutions to the problems It should help you eradicate most problems you might encounter Symptoms Probable Causes Solutions The power LED is not on The drive is not receiving DC voltage Verify that the connector on the drive is strongly illuminated fastened Verify that there is DC voltage at the DC outlet that the drive is plugged into Verify that there is DC voltage at the drive at the DC power connector Little or no holding torque Power LED is o
25. wer in the low state input photodiode of reset input of drive is turn on state of reset output of controller 11 7 Connection and Wiring 7 1 motor input signal out signal Power connections DANGER All connections should be made with any power sources turn off and disconnected from the drive Electric shock may occur Only qualified service and installation personnel should install this device The cable should not have excessive force applied to it and should not be bent beyond a 2 5cm radius of curvature during normal operation Choose twisted pair wire for pulse input reset input and fault out and the length of these wires should be shorter than lm Shield these wires ensure that the shield is taken to a low impedance earth ground Specially when current resolution of drive is set high and mid or high speed is required more attention is crucially required to wiring pulse input signal Choose motor and power connection wire sufficiently thick Do not bundle the control wire and communication cable with the main circuit or power line Keep the control wire and the communication cable at least 100 mm away from the main circuit or power line otherwise noise or malfunctions will occur Failure to engage the connectors properly could result in faulty connection leading to erroneous inputs and outputs Engage the drive unit connector and peripheral device connector securely with the co
26. wer of factory or laboratory is OFF by various reasons be sure to turn OFF the local power for step drive The abrupt start of machine may occur when the main power OFF state is released lt OTHERS gt During 30 sec after main power OFF do not contact the connectors of drive There will be remained diminishing power If power is left on the drive will break down or malfunction CAUTIONS lt GENERAL gt Be sure that drive current is not more than 10 of motor rated phase current Take all possible measures to prevent chips or wire scraps from entering the drive Entry of foreign material will cause fire failure or malfunctions lt MOUNTING gt Do not place the other controller or material on the drives Install the drive correctly in the holes of base mounting panel incorrect installation could result in malfunctions failure or detachment lt OPERATION gt Do not make abrupt stop the motor unnecessarily The regenerated power of motor in sudden stop may break down the drives When the abnormal operations or emergency occur check the general points listed in the last chapter of this manual To prevent the electric shock or drive fail use the insulated material to modify dip switches of drive The motor torque increases according to RUN CURRENT set value However do not set run current larger than motor rated phase current it will causes the vibration mechanical noise and excessive heating in motor Fi
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