TINY CONTROLS
Contents
1. TINY CONTROLS Its always possible Tstep 484 TWO PHASE BIPOLAR STEPPER MOTOR DRIVER USER MANUAL TINY CONTROLS AND TINY CONTROLS LOGO ARE TRADE MARKS OF TINY CONTROLS OTHER TRADEMARKS TRADENAMES AND SERVICES MARKS OWNED OR REGISTERED BY ANY OTHER COMPANY AND USED IN THIS MANUAL ARE THE PRPPERTY OF RESPECTIVE COMPANY C 55 Nishat Park Kakrola Mor New Delhi India 110078 WEB HTTP WWW TINYCONTROLS COM Phone 91 11 25331567 CONTENTS Item GENERAL DESCRIPTION PHYSICAL AND ELECTRICAL CHARACTERISTICS COMPONENTS DESCRIPTION TERMINALS DESCRIPTION TERMINAL WIRING DESCRIPTIONS PRODUCT DIMENSIONS INSTALLATION CURRENT SETTING TABLES NOTES CONNECTING 4 6 AND 8 LEAD MOTOR USER NOTES In the following pages Tstep 484 may be called as Tstep 484 or simply Drive er when the option function applies to both models GENERAL DESCRIPTION The Tiny Controls Tstep 484 is a high resolution step motor drive operating on fixed 10 micro stepping The Tstep 484 operates on an unregulated positive supply voltage of 18 48V DC Drive output current ranges from 0 7A to 4 2 A per phase With suitably sized motors over 200 watt peak can be delivered to user s application The control interface for the drive is opto isolated for maximum noise immunity The inputs are compatible with TTL drivers and require no additional components The Tstep 484 is programmed to provide excellent stability at2. are no minimum requirements for timing it is suggested to keep the signal high for a minimum of three microseconds to fully saturate the output transistor inside the optocoupler TERMINAL 3 amp 4 Direction signal Motor will step clockwise on high signals and counterclockwise on low signals on each step pulse If motor is stepping in opposite direction to what is desired it can be corrected by simply interchanging the wires of one phase keeping the other phase coil connection same gt TERMINAL 5 amp 6 Disable Signal These are simply disabling signal As the name suggests it is provided to disable the drive PHASE TERMINAL INTERFACE These are the phase winding outputs to the stepper One motor winding coil goes to and the other winding coil connects to No power is applied to the phase outputs until the initial one second approx after power up of the Tstep 484 power on reset Motor wires not connected to the drive should not be left exposed Cut off the striped ends and insulate them with electrical tape or heat shrink tubing The Tstep 484 will drive 4 6 and 8 wire motor With 6 motors the user has the option of connecting the winding in a high or low performance configuration Reference the relevant information from page 15 showing the connections of 4 6 and 8 wired motor connections POWER SUPPLY TERMINAL INTERFACE TERMINAL 11 It is the positive dc voltage input for the motor power supply
3. The power supply voltage range is 18 to 48 VDC for Tstep 484 The power supply may be unregulated For unregulated supplies it is recommended that the ripple voltage be limited to a maximum of 1096 of the DC output voltage The power supply should have a sufficient smoothing capacitor if a Switch mode power supply is used a capacitor 470uf 100V connected across the power terminals is suggested since SMPS usually have little output capacitance This capacitor should be located as close as possible to the motor power terminals Because of the electrical noise generated by these drives it is not recommended that the supply be shared with low level logic circuitry During rapid deceleration of large inertial loads from high speeds step motors become generators of considerable electrical power This is returned to the supply by gt the step motor drive If the supply cannot absorb this power the voltage generated may exceed the limit of the Tstep 484 i e 48 volts and damage the drive and power supply To prevent this problem make sure the ripple voltage does not exceed the rated supply voltage of drive Power supply current requirements depend on the motor being used and whether it is wired for high performance parallel or low performance series operation If the motor is wired for high performance parallel the current required from the supply will not exceed 2 3 of the motor s rated per phase current Low performance series opera
4. all speeds overcoming a limitation of other drives to perform in certain low speed conditions full power operations at speed normally prohibited when use other drives The H bridge output utilizes MOSFET designs to minimize heating due to switching losses To improve poor motor efficiency automatic current standby reduces phase current to s low level while the motor is at rest to keep heating of drive and motor to a minimum Over current windings short and under voltage are automatically sensed by drive When any of these conditions occurs the T step 484 shuts down and turns on a faulty LED red in color to indicate the presence of fault condition The driver is compact measuring approx 82mm x 65mm x 20mm It comes encased in an anodized powder coated enclosure small enough to be assembled with ease into compact control boxes SS PHYSICAL AND ELECTRICAL CHARACTERISTICS Supply Voltages 18 48 V DC Phase Current 0 7 4 2 Chopping Frequency 20 KHz Auto Current Reduction 7096 of set current after approx 1 second of inactivity Inputs Step and Direction opto coupled 3 3 V or compatible Short Circuit Protection Motor windings and motor outputs to ground Step Frequency 0 to 200 KHz Step pulse Step on rising edge minimum low high time 2us Direction input Stay 500ns unchanged before and after a step pulse Minimum operating Temperature 70 degree Celsius 158 F Storage temperature 0 50 degre
5. e Celsius Humidity 9096 Overall Size 82mm x 65mm x 20mm Weight 0 50 kg COMPONENT DESCRIPTION 1 MOUNTING PLATE This plate serves as a heat sink for the drive heat generating components are thermally coupled attached to this plate 2 CONNECTOR 2 different removable power terminal strips located on the front edge of the Tstep 484 each 6 pin The first connector gives connections for control interface i e Step Direction and Disable connections The 2 connector is for the power supply and motor windings 3 MOTOR CURRENT OPTION HEADERS A jumper block is provided for setting motor current 4 FAULT LED RED This LED indicates that tstep 484 has auto triggered its protective shutdown circuit cycling the power supply after correcting fault condition Will reset the driver and turn off the LED 5 POWER LED GREEN It indicates the power is connected to drive and it is in working condition 6 MOTOR COVER This powder coated cover protects the driver from external elements in contact with the drive electronics and also works as shield that can interfere the internal electronic workings TERMINAL DESCRIPTION Terminals are described from left to right in picture THE CONTROL INTERFACE Control interface are opto isolated from the power section of drive and described below TERMINAL 1 amp 2 Step is the active signal signal input the motor will rotate one step each low to high going edge Though there
6. e direction then reverse the connections of motor windings Put the connections from Terminal 9 to 10 and remain terminal 7 and 8 as it is DISABLE to disable the stepper drive TERMINAL 5 amp 6 This Terminal disables the stepper motor drive Terminal 5 Dis is for signal ground and terminal 6 Dis is for controller 5V DC signal This Terminal disables the stepper motor drive Terminal 5 Dis is for signal ground and terminal 6 015 is for controller 5V DC signal All the signals above are opto isolated from each other Don t connect the signal ground and Terminal 1 3 and 5 to MGND Terminal 2 4 and 6 are driven gt with 5V signals without needing any external signals or resistor and the driver must be able to supply a minimum of 10mA to the opto coupled STEP DIR signals for best results PHASE TERMINALS Motor leads connections TERMINAL 7 MOTOR PHASE MB Connect one end of phase B motor windings here TERMINAL 8 MOTOR PHASE Connect other end of phase B motor windings here TERMINAL 9 MOTOR PHASE MA Connect one end of phase A motor windings here TERMINAL 10 MOTOR PHASE Connect other end of phase A motor windings here POWER TERMINALS TERMINAL 11 Connect the red lead of power supply to this terminal It must be between 18V DC to 48 V DC TERMINAL 12 Connect the negative black lead of power supply to this terminal Don t short the motor leads to each other or the drive will g
7. ecting the power wrongly will destroy the drive 7 The current set CSET jumpers are treated as 1 when they are mounted on pins and 0 when they are not mounted Removed un mounted jumpers should be kept safe for future use 8 Never put a switch on the DC side of the Drive power supply always the switch should be located on the AC side of the power supply Loose power wires to the Drive also equivalent to a switch on DC side and can trigger the error inside drive in worst case it may blow the internal fuse 9 Note that the extreme left terminal MGND is power GND and the nest right to it MPWR is ve supply terminal its printed on drive cover but just making sure by mistake the power is not connected wrong way 10 Drive is NOT protected from reverse polarity on power terminals and doing so will blow the internal fuse and may destroy the driver CONNECTING 4 6 AND 8 WIRES MOTOR 4 Lead Only One Way Set rated Current NG Moo 33 6 LEAD MOTOR 24 6 Lead Series Coil Set 1 3 rated Current do i 8 Lead Parallel Coil Set 2 3 rated Current NOTE It is recommended to set the drive output current equal to above values this will result in minimum heating from the motor 17 18
8. o into short circuit error Drive can be reset back to normal operation after removing the fault condition like short at output by recycling the power The power supply must be between 18V DC to 48 V DC Power supply excess of 48 V DC will damage the drive The choice i e what should be the power supply voltage depends on the inductance of the motor The power supply voltage should not be less than 4 times of rated voltage of motor Product Dimensions Installation MA qup puc 9999999999999 9999949999999 qo ppc V LZ qr J i CT 15 75 When operating the Tstep 484 at high power more than 3 0 A levels external heat sink must be attached to the mounting plate The mounting plate dimension are as given above the dimensions are in millimeter Tstep 484 can be mounted on any of the mounting position horizontally or vertically connections are available on the front side of the drive for easy access and clean routing of wire harness Note Don t run Signal and motor Power cables parallel in the same conduit as the high frequency power switching generated noise can get into signal interfering the working of the driver Use shielded cables for the Signal lines for better noise immunity No connectors are required on the wiring to the drive A wire size of 16 22 AWG around 1 sq mm is recommended Either stranded or solid conductor wire may be used The ins
9. tion requires a maximum of 1 3 the motor s rated current Use the manufacturer s phase current rating of the motor in conjunction with the motor wiring option to estimate the size of power supply required Page 15 explains in more details the various configurations for connecting motor to the driver More than one Tstep 484 can be run from a common power supply if the filter capacitor is sized large enough to account for the combined load Each Tstep 484 must have separate power supply leads back to the power supply TERMINAL 12 is the ground connection for motor power supply TERMINAL WIRING DESCRIPTION The Tstep 484 comprises a 2 piece main connector The first connector has 1 to 6 terminals for control interface and the other connectors have terminals 7 to 12 for motor leads and power supply connections Each can be removed separately by pulling the connectors upwards STEP Connect the STEP signal to these terminals TERMINAL 1 amp 2 Step pulse Connect the step signal to Step terminal 1 or Step terminal 2 as per your requirement Terminal 1 is for signal ground and Terminal 2 is for controller 5V DC signal DIR Connect the DIR signal to these terminals TERMINAL 3 amp 4 Dir pulse Connect the Direction signal here Terminal 3 is for signal Ground and Terminal 4 is for controller 5V DC signal Direction pulse provides the clockwise or anticlockwise direction from step controller If the motor turns in opposit
10. ulation should be stripped back 5 mm around quarter of an inch and the wire left un tinned CURRENT SETTING USING CSET JUMPER BLOCK Following Table shows the jumper settings for the corresponding currents in A CURRENT SCrPFPORFR OR OR OR OR OR OR PF ORR RB COCO OrR COR OR OR RRR BP When using above table 1 means Jumper mounted and 0 means jumper removed The Tstep 484 is a high frequency switching type drive Because of the rapid rate of voltage and current change inherent with this type of drive considerable RFI is generated The following precautions should be taken to prevent noise from coupling back to the inputs and causing erratic operation 1 Never run the motor leads in the same cable or wiring harness as the STEP DIR or COM GND or 5 V lines 2 Keep power supply leads as short as possible If the power supply lead length exceeds 12 inches use a 100 pf 100V capacitor across Terminals 1 amp 2 at the drive please ensure correct polarity 3 Never wire capacitors inductors or any other components to the motor output terminals 4 Ground the Tstep 484 case 5 The metal casing of Tstep 484 acts as an electrical noise filter and it is recommended not to run the drive without the cover casing 6 Drive is protected from over current and short circuits but not from reverse polarity on POWER Terminals and conn
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