MS3ST5/10-S 3 Phase Step Motor Drive User Manual
Contents
1. 20 5 Trouble SHOOTING RE WF EENREEEEEERINRE nS EENNRINU REF MEE E DERE 21 WWW moons com cn EH MS3ST5 10 S Step Motor Drive 1 Introduction 1 1 Overview Thank you for selecting a MOONS motor drive We hope our dedication to performance quality and economy will make your motion control project successful If there s anything we can do to improve our products or help you use them better please call 86 21 52634688 or fax 86 21 62968682 You can also email info moons com cn 1 2 Features e Brand new technology Advanced current control Microstep emulation provides smooth motion even with low step resolutions Anti resonance algorithm eliminates mid range instability Command signal dynamic smoothing algorithm make motor motion less jerky Multiple operating modes Step amp Direction CW CCW Encoder following Analog velocity or digital velocity SCL host commands for real time control from a host PC or PLC using RS 232 serial communication Multi axis Mis programming when used with MisNet Hub RS 232 communication interface Software selectable microstep resolutions from 200 to 51200 steps rev in increments of 2 steps rev Power supply External 24 48 VDC MS3ST5 S 24 80 VDC MS3ST10 S Software selectable motor current 0 5 5 MS3ST5 S 0 5 10 MS3ST10 S amps phase in 0 01 amp increments Auto setup measures2. Choose a Function for EN Input Enable motor when closed Choose a Function for the Output Options for the EN Input are e Enable motor when closed current flowing through the input enables the motor and it has no power when the input is open e Enable motor when open opposite of above e Reset alarm when closing an alarm or fault can be cleared by closing the input e Reset alarm when opening an alarm or fault can be cleared by opening the input e Not Used there is no function for the input but its state can be read using the SCL IS FS FY command Options for Output are e Closed on fault the output will close if a fault occurs e Open fault the output will open if a fault occurs WWW moons com cn si Nu MS3ST5 10 S Step Motor Drive e Closed to release brake the output controls a fail safe brake relay e Open to release brake the output opens to release the brake e Closed when moving the output closes whenever the motor is moving e Open when moving the output produces pulses relative to the motor position e Tach out output produces pulses relative to the motor position e Not Used there is no function for the output but it can be controlled using the SCL SO FO IH and IL commands Velocity Mode In velocity mode the motor s speed is controlled by analog and digital inputs Felocity Control Kode MW Use STEP input as Run Stop command closed
3. NON VOLATILE Configurations are saved in FLASH memory aboard the DSP STORAGE MODE OF OPERATION Step amp Direction CW CCW Encoder Following Oscillator Joystick SCL Optically Isolated Differential 5 Volt Minimum pulse width 250 ns STEP AND DIRECTION Maximum pulse frequency 2 MHz INPUTS Function Step amp Direction Run Stop amp Direction Jog CW CCW or CW CCW Limits OUTPUT CURRENT POWER SUPPLY INPUT VOLTAGE RANGE Optically Isolated 5 12 Volt EN INPUT Function Motor Enable Speed Select Alarm Reset or Home Switch Optically Isolated 24V 10mA MAX OUTPUT Function Fault Motion Tach or Brake WWW moons com cn J MPMI MS3ST5 10 S Step Motor Drive SPEED RANGE Depends upon selected resolution Amplifier is suitable for speeds up to 50 rps ANALOG INPUT RANGE 0 to 5V MI CROSTEP Software selectable from 200 to 51200 2 steps rev increments RESOLUTION ANTI RESONANCE Raises the system damping ratio to 0 3 to 0 5 eliminates midrange instability and allows stable operation to 50 rps AUTO SETUP Measures motor parameters and configures gain parameters MI CROSTEP Performs low resolution stepping by synthesizing coarse steps from fine EMULATION microsteps COMMUNI CATI ON RS 232 INTERFACE AMBI ENT TEMPERATURE O to 55 C 32 158 F MS3ST10 S must be mounted to suitable heatsink HUMIDITY 9096 non condensing 1 5 Getting Started To use drive models MS3ST5 S
4. Motion indicates when the motor is moving Fault closes when a drive fault or alarm condition occurs The red and green LEDs will flash an error code Tach produces pulses proportional to the distance traveled and thereby a frequency that is proportional to motor speed General purpose digital output controlled by the SCL SO FO IL and IH commands The output has separate and terminals and can be used to sink or source current Diagrams of each type of connection follow Do not connect the outputs to more than 24VDC The current through each output terminal must not exceed 10 mA 5 24 VDC Power Supply m oe 5 24 VDC Power Supply T Sourcing Output WWW moons com cn tg MS3ST5 10 S Step Motor Drive 2 2 Configuration With the ST Configurator versions 0 0 034 or above drives can be configured for specific applications The setup Is divided into four sections each focused on a particular area of configuration 2 2 1 Configurator Menus In the File Menu previously created configurations can be Opened and new or altered configurations can be Saved Any setup can be Printed The Exit command will close the ST Configurator ER T Configurator 0 0 34 untitled i File Drive Help Open Save Save As Print PESE The Drive menu provides three features the SCL Terminal allows you to type in SCL commands and see the drive s response For SCL applications this is a good way t
5. adapter 2 1 4 Connecting the inputs and outputs The three inputs STEP DIR EN are on the six position connector The analog input and the digital output are on the five position connector along with 5VDC and a ground for analog connections 1 connecting digital inputs 5 w D 2 di AD B cimo FT 5 3 cC DIR c 330 220 C pF aL DR gt c F e i Ch w B 680 EN Digital inputs The S drives include two high speed inputs called STEP and DIR They accept 5 volt single ended or differential signals up to 2 MHz EN is a 5 12V standard digital input that can be used for motor enable Indexer connections Indexer with Sourcing Outputs Indexer with Sinking Outputs WWW moons com cn 1 Kk MS3ST5 10 S Step Motor Drive Indaxar with Differential Dulputs Using High Speed Inputs with 12 24 Volt Signals PLCs do not commonly use 5 volt logic Signal levels as high as 24 volts may be connected to the STEP and DIR inputs if external dropping resistors are added as shown below e For 12V logic add 8200hm 1 4 watt resistors e For 24V logic add 22000hm 1 4 watt resistors Warning The maximum voltage that can be applied directly to a high speed input terminal is 5 volts Never apply high voltage AC to an input terminal PE with Sourcing Dutputs Connecting to PLC with Sourcing PNP Outputs
6. axis System with MisNet Hub This option is selected to configure the drive with the correct power up mode if a MisNet motion control hub will be used to create a multi axis system Hubs can be programmed as a stand alone multi axis system or as a router for SCL commands from a host system Refer to the MisNet Hub Programmer and SCL Programming manuals for more information 3 Error code Status LED The ST drives include two red green LEDs to indicate status Normal status is indicated by a green LED If the red LED flashes an error has occurred The errors are indicated by combinations of red and green flashes as follows Code Error O88 1 red 2 green attempted move while drive disabled 2 red 1 green ccw limit ppe 7 red 2 green cw limit 00046 3 red 1 green drive overheating 060008 4 red 1 green power supply overvoltage 6000846 4 red 2 green power supply undervoltage Oe 5 red 1 green over current short circuit 650000086 7 red 1 green senal communication error 4 Drive mounting MS3ST5 10 S drives can be mounted on the wide or narrow side of the chassis using 6 screws If possible the drive should be securely fastened to a smooth flat metal surface that will help conduct heat away from the chassis If this is not possible forced airflow from a fan may be required to prevent the drive from overheating e Never use the drive in a space where there is no air flow or where the ambient temperature exceeds 50 1
7. database or entering information about a custom motor Configuring the Motor Motor f Standard motor 24H C2301 Cancel UK ZAHLZ3LUT T Custom motor 24H 33m Help Wiring Running Current o 120 amps Torque 8 Nm Rated Current j w wzwzm Rotor Inertia EIS g emiz Smoothing Ganf 0 M Idle Current Phase og DIE 50 x 0 60 A Load Inertia Fl 00000 s e 1 0 Xrator inertia Idle Current Delay O40 secs UNS Electronic Damping inil resonance Off N waveform Smoothing Off The ST drives work best with the recommended specially matched motors To configure the drive for one of these motors select it from the drop down Standard Motor list The Rated Current for the selected motor will appear in the Motor Specs section If an application is particularly heat sensitive and there is more torque available than needed motor heating may be reduced by lowering the current If a duty cycle is short giving the motor time to cool down between moves the current may be set higher than rated to increase the torque However motors operated above their rated current will not run as smoothly and if used continuously could overheat Reducing the Idle Current reduces motor heating by lowering the current when the motor is at rest In most cases the default value of 50 works well Motor heating may be furt
8. different gain and phase values until the desired effect is achieved If the values are not known or determined gain and phase may be set at O Add Hew Motor Waveform Smoothing custom motor IEEE T l m Maximum Current i 1 i 2 amps Phase 0 LI LI 1 Holding T orgue 118 az in L Maximum Voltage F A otor Ane e 151 volts JUL 9 ome I 1 I 1 F m Max Lead Angle required for stall prevention 135 degrees at 40 rey sec Help Cancel 2 2 4 Motion Clicking on the Motion button will bring up the Motion menu where one of several operating modes may be selected Digital Positioning Pulse Dir Velocity Oscillator SCL and Hub are the modes available for the S drives WWW moons com cn si NH MS3ST5 10 S Step Motor Drive Digital Positioning Mode Pulse amp Direction Control Digital Signal Type Direction is CM when 8 leads B Cancel a B leads Help Step Smoothing Filters r Input Moise Filter 20000 2500 Hz 2143 MHz Choose a Function for EM Input Nat used Choose a Function for the Output Used Pulse Input Mode 15 for systems where the position of the m
9. from the Status Monitor by clicking the buttons at the bottom of the display BB T Configurator 0 0 34 untitled File Drive Help Alarm History 53575 5 Clear Alarm Restore Factory Defaults SCL Terminal Self Test Status Monitor Set Quick Decel Rate The Help Menu allows access to the help screens via Contents gives Contact information for MOONS links the user to the Website and gives technical information about ST Configurator ER ST Configurator 0 0 34 untitled File Drive Contents NS M535T5 5 Contact Us Website WWW moons com cn 3 MS3ST5 10 S Step Motor Drive 2 2 2 Drive Choose one of the ST drive models from the drop down list on the upper right The MS3ST5 S and MS3ST10 S can be used for three types of applications 1 Applications where another device controls the drive by sending electrical signals over wires The signals can be digital positioning pulses step amp direction or quadrature encoder following modes or a velocity mode where the motor speed is selected by digital or analog signals 2 Applications where a host PC or PLC sends high level commands over a serial port using the Serial Command Language SCL 3 Multiaxis applications where a control program is stored in a MisNet Hub and one or more drives are connected to it 2 2 3 Motor In the Motor dialog box operational parameters are defined either by choosing a motor from the
10. motor parameters and optimizes system performance automatically Automatic idle current reduction from O to 90 of full current after a delay selectable in milliseconds Inputs amp Outputs One 0 5V analog input Two 5V high speed digital inputs One 5 12V digital input One 24V 10mA max optical isolated digital output Strong protection over voltage under voltage over temp and over current Compact size Suitable to drive 3 lead NEMA 24 or 34 three phase step motors CE Certification RoHS Compliant WWW moons com cn XH MS3ST5 10 S Step Motor Drive 1 3 Block diagram The block diagram of MS3ST5 10 S is as below 24 ABVDCIMS3STS S 24 ABVDC MS3STT0 S fram extemai power supply MS3ST5 S MS3ST10 S Block Diagram pc S STEP OUT ANALOG IN 1 4 Specifications POWER AMPLIFIER SECTION S AMPLIFIER TYPE MOSFET Three half Bridge 4 Quadrant CURRENT CONTROL MS3ST5 S 0 5 5 0amps phase peak value in 0 01 amp increments MS3ST10 S 0 5 10 0amps phase peak value in 0 01 amp increments MS3ST5 S External 24 48VDC Power Supply Required MS3ST10 S External 24 80VDC Power Supply Required MS3ST5 S 18 53 VDC MS3ST10 S 18 88 VDC Over voltage under voltage over temp motor wiring shorts phase to phase phase to ground IDLE CURRENT Reduction to 0 90 of full current after a delay selectable in milliseconds REDUCTION CONTROLLER SECTI ON S
11. or MS3ST10 5 the following items are needed lt power supply 24 48VDC for MS3ST5 S and 24 80VDC for MS3ST10 S compatible step motor A small flat blade screwdriver for tightening the connectors a MOONS screwdriver suitable for this purpose is included with your drive lt APC running Windows 98 2000 ME XP or NT with a 9 pin serial port ST Configurator software included with the drive The communication cable included with the drive To become familiar with the ST drive and Configurator Software before utilizing it in an application the following steps are recommended Install the ST Configurator Software from the CD Launch the software by clicking Start Programs MOONS ST Configurator Connect the drive to your PC using the programming cable supplied Connect the drive to the DC power source may be switched Connect the drive to the motor Apply power to the drive peo E D E Follow the instruction in the ST Configurator Software 2 Installation 2 1 Connections wires 2 1 1 Connecting the power supply The MS3ST5 S accepts a DC supply voltage from 24 to 48 VDC The MS3ST10 S accepts a DC supply voltage from 24 to 80 VDC WWW moons com cn KH MS3ST5 10 S Step Motor Drive Using the connector supplied and AWG 16 or 18 wire connect to the power supply as in the diagram below Fusing Internal fuse the MS3ST5 S and MS3ST10 S contain internal 10 amp fast acting fuses External f
12. 209F e Never put the drive where it can get wet e Never allow metal or otherwise conductive particles near the drive WWW moons com cn KE98 MS3ST5 10 S Step Motor Drive MS3ST5 S and MS3ST10 S 3 39 86 1 3 0 76 19 26 575 g 5XSLoT 0 16 E WIDE FULLR 16 84 0 663 3 65 92 71 Note inch mm 5 Trouble Shooting Why does the drive indicate an over voltage error after stopping from high speed motion High speed motion generates high back EMF which can be transferred to the drive and destroy it after a sudden stop MOONS recommends using an RCO50 to protect the drive in a high speed application How to the function of Electronic damping Anti resonance used The anti resonance feature is most effective in restraining midrange resonance of 5 20rps if the load inertia can be set precisely If the exact inertia is unknown the best results are achieved through experimentation WWW moons com cn 8
13. MS3ST5 10 S 3 Phase Step Motor Drive User Manual SHANGHAI AMP amp MOONS AUTOMATION CO LTD 2008 12 MS3ST5 10 S Step Motor Drive Contents 1 NEE OG ON mE 3 Dey l ee ee o 3 Le Fea Co re E eT eS ee ee ee ee ee eee ee 3 1 3 BOCK Cla Ol GIN PT 4 Tee SOS CINIC AMONG e E o o sa a TEE 4 UM MEC IU T Tm 5 2 Bicis mte R G X 5 2l SUD edo E 5 2 1 1 Connecting the power supply n aa aaa aaa nnns 5 Pu MERC edijeBuj deie cr E Eai 7 2 1 3 Connecting to tne PC USING 432 ETa 8 2 1 4 Connecting the inputs and 8 PEE S eiecit o mtr 12 221 COMMOUPALOn MCAS Re 12 VOC a E seat 14 Dt MOOT corran E E E E E 14 ii H O 15 3 Error COG G BB R w eow w S X X 20 4 Dive MOUNTING
14. Most PLCs use 24V logic Connecting to PLC with Sinking NPN Outputs Most PLCs use 24V logic run stop switch desed run 2200 Using Mechanical Switches at 24V WWW moons com cn KH MS3ST5 10 S Step Motor Drive Standard Digital Input As mentioned above the STEP and DIR inputs are configured for 5 volt logic The EN input is designed for operation between 5 and 12 volts Add 1500ohm to EN for 24 volt operation EN Input Connection Examples switch or relay closed logic low Supply Oi S EM LI ho m EFE GE ENS GM Gm mw a 4 5 12 Power NPN Supply Proximity 1 1 PNP Proximity Sensor 5 Position Connector The MS3ST has one 0 to 5 volt analog input that can be used by the drive for controlling the motor speed in velocity mode WWW moons com cn NH MS3ST5 10 S Step Motor Drive Connecting an Analog Signal 0 5v speed signal signal return Connecting the Analog Input to a potentiometer or joystick 1k 10k ohm pat WARNI NG The analog input must be used with care It is not optically isolated and may operate improperly or could be damaged when system grounds are not compatible 3 Connecting the Digital Output The MS3ST5 S and MS3ST10 S drives include one digital output that can be used in one of five ways Brake Brake controls an electric brake relay automatically releasing and engaging as the drive requires
15. ferent speed which must be entered in the change motor speed to box e Enable motor when closed the motor is enable when current is flowing through the input and has no power when input is open e Enable motor when open opposite of above e Reset alarm when closing an alarm or fault can be cleared by closing the input e Reset alarm when opening an alarm or fault can be cleared by opening the input e Not Used there is no function for the input but its state can be read using the SCL IS FS or FY command Options for OUT are e Closed on fault the output will close if a fault occurs e Open on fault the output will open if a fault occurs e Closed to release brake the output controls fail safe brake relay e Open to release brake the output opens to release the break e Closed when moving the output closes whenever the motor is moving e Open when moving the output opens whenever the motor is moving e Tach out the output produces pulses relative to the motor position e Not Used there is no function for the output but it can be controlled using the SCL SO FO IH and IL commands WWW moons com cn NH MS3ST5 10 S Step Motor Drive SCL Mode Here the power up mode for the drive is set correctly for use with SCL applications SCL is MOONS host command language for applications requiring drives to receive instructions from a host controller in real time With SCL drives can be operated in RS 232 mode Multi
16. hen transferred back to the drive and can damage it To prevent this the use of an RC 50 regen clamp is recommended as illustrated below AX r PrPLIED OTIDNA 3 X ELI M 2 1 2 Connecting the Motor Never connect the motor to or disconnect it from the drive the power is on Insulate unused MOTOF leads separately and then secure Never connect motor leads to ground or to a power supply A 3 phase step motor s winding is either a star or delta configuration A delta connection is best for high speed applications while a star connection is best for low speed The MS3ST drives are set up for delta connection Connect the motor leads to the drive screw terminals U V and W You can also reverse any two leads to change the motor s running direction The star and delta wiring diagrams need to be included for further understanding WWW moons com cn 7 MS3ST5 10 S Step Motor Drive 2 1 3 Connecting to the PC using RS 232 Position the PC within 6 feet 1 83 meters of the step drive Locate the black adapter plug that came with the drive Plug the large end of the adapter into the COMI serial port on the PC Secure the adapter with the screws If the COMI port is already in use the COM2 port may be used If the COM2 port has a 25 pin connector and this port must be used purchase a 25 to 9 pin serial adapter Another option is to use a USB port via a USB to RS 232
17. her reduced by lowering the Idle Current percentage even more WWW moons com cn IPS MS3ST5 10 S Step Motor Drive The Idle Current Delay is the amount of time between when the motor stops and the current is reduced It is recommended to allow a little time for the motor to settle out before the current is reduced Note The Rated Current is in RMS formal and the Running Current is the peak value The Running Current must not exceed 1 5 times the Rated Current Load nertia The anti resonance feature is most effective if the load inertia is set precisely If this is a known value the first option circle should be clicked the inertia entered and units of measurement selected If the exact inertia is not known the second option circle should be selected and an approximate load to motor inertia ratio entered This number can be adjusted as needed Defining a Motor not in the Recommended List When a Custom Motor is used detailed information from the manufacturer will be needed This includes electrical specifications holding torque rated current and rotor inertia as well as a wiring diagram To define a Custom Motor that circle should be checked and the Define Custom Motor button clicked In the Add New Motor dialog box current torque and inertia values are entered For the smoothest motion the harmonic distortion gain and phase should be entered This may need to be determined by running the motor at a slow speed 1 rev sec with
18. ld be entered in accordance with the pulse source or indexer The motor will provide smoother more precise motion with a higher step count but when the frequency of the indexer is limited the steps rev may need to be reduced to achieve the desired speed range For example in an WWW moons com cn WU MS3ST5 10 S Step Motor Drive application requiring a maximum speed of 20 revs second where the indexer is limited to a 100kHz maximum pulse rate the steps rev should be no higher than 5000 A particular value may also be entered to make one step result in a convenient increment of motion For example in a linear motion application using a lead screw with a pitch of 5 turns per inch 20 000 steps rev will provide a nominal movement of 00001 inches per step Move lengths can be more easily calculated with this method For a metric application with the same lead screw 50 800 steps rev would result in 0001 mm per step Encoder following applications can also be easily configured with a particular Steps Rev value To drive the motor two turns for every one turn of a 2000 count rev 500 line encoder the value of 1000 steps rev would be entered Other I O Settings Functions can also be assigned to the EN input and the output in the Pulse amp Direction Control box Pulse amp Direction Control Digital Signal Pulse amp Directia U 20000 1000 Hz 1r Step Smoothing dT Hoise Filter 2 Mke
19. lt supply To select an appropriate power supply the following procedure is recommended 1 If only a few drives will be used a power supply with at least twice the rated phase current of the motor is needed 2 When designing for mass production at low cost current requirements may first be determined by using the power supply recommended above The motor should be installed in the application and monitor the current coming out of the power supply and into the drive at various motor loads An appropriate power supply can then be selected When designing for mass production at low cost current requirements may first be determined by using the power supply recommended above The motor should be installed in the application and monitor the current WWW moons com cn NH MS3ST5 10 S Step Motor Drive coming out of the power supply and into the drive at various motor loads An appropriate power supply can then be selected Regeneration When a step motor decelerates it converts the kinetic energy of the load into electrical power much like a generator Some of this power is consumed in the motor and some in the drive In applications involving large loads running at high speeds considerable energy is transferred to the power supply Generally simple linear power supplies have large capacitors capable of absorbing this energy without damage Switching power supplies usually shut down due to an over voltage condition Excess energy is t
20. o learn the commands before you start writing your host control software Alarm History will display the last eight alarms and or faults If an alarm or fault condition is being displayed Clear Alarm will clear it Restore Factory Defaults will return the drive to its original factory configuration SCL Terminal allows SCL commands to be entered to test the drive s response creating an opportunity for commands to be learned before host control software is written Self Test rotates the motor a half revolution in alternating directions at a low speed to allow verification that the motor is connected and functioning properly Status Monitor displays real time drive status including Status Monitor m Drive Status Monitor Input Status Drive Status Alarms F aults 4 low closed Enabled Fault E Motion mm P2P Move Jogging Stopping C Walt Input L 6 low closed Alarm E Homing C mm Wait Time L 5000000000 1 S Disable WWW moons com cn si NH MS3ST5 10 S Step Motor Drive The status Monitor displays real time drive status including the following accessed from the Drive menu displays real time drive status including e State open or closed of all inputs e State of outputs click the HI LO buttons to force an output e Motor speed e Voltage at the analog input e Alarms or faults e Status flags enabled motion jogging etc The motor can be enabled or disabled
21. otor is determined by a digital input signal in the form of pulses The three modes available are Pulse and Direction A signal such as that generated by a step motor controller is used In this mode the frequency of the pulses fed into one input determines the speed of the motor Direction of rotation is determined by a signal fed into another input Either an ON or OFF signal can be configured to represent clockwise motion CW and CCW Pulse The drive has two inputs allocated to this feature and the motor will move CW or CCW depending on which input the pulse is fed into A amp B Quadrature This is sometimes called Slave Mode Signals fed to the drive from a master encoder control the movement of the motor The encoder may be mounted on a shaft on the machine or can be another motor in the system With quadrature input it is possible for a number of motors to be daisy chained together with the encoder output signal from each drive being fed into the next one For all the Pulse Input modes you will need to determine a value to enter into the Electronic Gearing Box an explanation on how to do this is given in the next section Steps Rev Steps Rev allows adjustment of the way the drive responds to incoming step pulses If a step motor drive in an existing application is being replaced with a new drive here the new drive can be configured to have the same number of steps rev as the old one In a new application this value shou
22. run IIR input controls direction of rotation Aecel Decel 100 rev s s 100 rey sys jw Speed proportional to analog input Analoz Input Range 0 to 5Y Speed 10 rev sec at 01 Advanced Settings Choose a Function for EH Input Change motor speed to fa rey se Choose Function for the Output Tach Out 100 pulses res v In the Velocity Dialog box the drive is setup and all available I O are configured e Checking the Use STEP input as Run Stop will command the drive to run using a switch or signal from another electronic device If this box is not checked the motor will run at all times unless the S peed proportional to analog input box is checked and the analog input voltage is set at O e Input DIR always controls the motor direction e The motor can be run at a fixed speed if a number is entered in the Speed box Acceleration and Deceleration rates are also set here e When is desired the drive to run in analog input mode the Speed proportional to analog input box must be checked The maximum speed corresponding to 5V analog input is set in the Speed box When the value 10 rev sec at 5V is set 2 5V analog input will produce 5 rev sec The analog input can also change the motor direction if values are entered under the Advanced Settings tab WWW moons com cn Ng MS3ST5 10 S Step Motor Drive Advanced Analog Set
23. tings Advanced Analog Settings Offset O mv Auto Offset Deadband 5 n Filter Freq 500 Hz Help Cancel Offset When a joystick will be used operate the drive in both directions offset must be entered that is half the voltage range of the joystick If the drive s 5V output is being used to power an analog joystick the offset should be 2 5V The maximum speed is half the value entered in the Analog Input box above and so 2 5V analog input will correspond to zero speed Deadband When it is necessary to stop the motor with an analog signal that doesn t go to 0 volts or an offset value potentiometers can usually go to O volts but electronic circuits usually can t a deadband is required This is the range of voltages in which the motor does not run and is useful for stopping the motor when the joystick is released e Filter Frequency If the analog signal is noisy the motor speed may not remain constant Industrial systems often pick up electrical noise on an analog wire and the ST s high resolution 12 bit analog input may respond to the noise If this occurs the analog filter frequency should be lowered until the issue is resolved If the frequency is set too low the motor may change speed more slowly than specified in the acceleration and deceleration boxes due to excessive filtering Options for the EN Input are e Change motor speed when the input is closed motor will run at a dif
24. use optional if desired we recommend MS3ST5 S MS3ST10 S 3AG 4 amp 3AG 6 25 amp Littlefuse 313004P Littlefuse 3136 25P Be careful not to reverse the wires Reversing the connections may destroy the drive and void the warranty Choosing a Power Supply Voltage A power supply with a voltage rating at least five times that of the motor is necessary for efficient and silent switching Higher speed needs will require even more voltage However the required voltage will not exceed 48V for the MS3ST5 S or 80V for the MS3ST10 S If an unregulated power supply is used it should not exceed 34V for the MS3ST5 S or 57V for the MS3ST10 S due to the fact that unregulated supplies are rated at full load current At lower load as when the motor is not moving the actual voltage can be as much as 1 4 times the rated voltage For smooth quiet operation a lower voltage gives the best results Current The maximum supply current required is the sum of the two phase currents The requirements will generally be less than that depending on the motor type voltage speed and load conditions This is due to the Switching amplifiers present in these drives which convert high voltage and low current into lower voltage and higher current As the power supply voltage exceeds the motor voltage less current is required from the power supply A motor running from a 48 volt supply can be expected to draw only half the supply current that it would with a 24 vo
Download Pdf Manuals
Related Search