USER MANUAL BSD-071
Contents
1. a 14 4 ELECTRICAL AND MECHANICAL SPECIFICATION 15 4 1 ELECTRICAL RATINGS siii 15 4 2 MOUNTING isiiroricaiiii a 16 BSD 071 User Manual Interinar Electronics LLC 1 HARDWARE REFERENCE 11 OVERVIEW The BSD 071 is designed to work with most Bipolar and Unipolar step motors as long as the switching sequence and power requirements for the motor complies with driver s specification The BSD 071 is intended to replace a sophisticated and costly drivers in applications where only basic Step and Direction features are required Based on powerful MOSFET stage once configured correctly the driver does not require any further adjustments or maintenance E ie Meg 1 11 SAFETY Always remove power and discharge the circuit for about 10 sec before touching it This module contains parts susceptible to damage by ESD Electrostatic Discharge The BSD 071 must be handled in accordance to procedures specified for ESD devices Do not make any modification to the board or components DO NOT PLUG UNPLUG ANY WIRES AND CONNECTORS TO FROM THE MODULE WHILE POWER IS ON FEATURES Bipolar or Unipolar Step Motor operation Built in Translator Phase Current up to 6 3A with automatic Idle Current reduction IDL Four Stepping Modes Full Half 1 4 1 16 Automatic current decay mode detection selection Adjustable Mixed current decay mode Synchronous rectification for low power dissipation Fixed Of2. Bipolar Series connection It gives more torque at lower speeds and less torque at higher speeds In series connection motor should be operated at only 70 of the rated current because using twice as large winding of each phase produces rated torque at lower current Running motor at full rated current will saturate and overheat the motor 2 Unipolar connection STEP MOTOR A lt N Figure 7 Bipolar series connection of 8 wire motor Only one half of each phase is used This connection works better at higher speeds 12 BSD 071 User Manual 3 Bipolar Parallel connection Motor should be run at 1 4 of the rated current This connection is not recommended as higher current SN n lt N we y Interinar Electronics LLC STEP MOTOR generates more heat in the driver and the motor WARNING obtain accurate information about beginning and end of each winding before any attempt of using this method If not connected properly the motor will stall and overheat quickly Possible damage to the motor Figure 9 Bipolar parallel connection of 8 wire motor 1 Figure 8 Unipolar connection of 8 wire motor STEP MOTOR Table 9 Parameters for 8
3. wire motor MODE POWER CURRENT VOLTAGE TORQUE Bipolar Series 100 70 140 140 Bipolar Parallel 100 140 70 140 Unipolar 100 100 100 100 13 BSD 071 User Manual Interinar Electronics LLC 3 OPERATION MODES 3 1 SETUP MODE The motor phase current must be set first The value of the current can be obtained directly from the label on the motor or from a data sheet The phase current is all you need to know to setup the driver To adjust and maintain the current at correct level the BSD 071 uses reference voltage which is present on TP1 Test Point located right below terminal block J4 The relation between and the current I can be described as follows VREF V 0 33 x I A Where Veer in Volts Tin Amps Example Motor is labeled 4 0A 0 33 4 0A 1 32V Setup procedure Turn OFF the power Connect Voltmeter between TP1 and GND Slide the MCS switch to ON position swi PNWAWOD Turn ON the power Observe as the Vref will rise slowly from OV towards 2 0V When Vref reaches calculated value slide the MCS switch back to OFF position If you missed the right moment then let the voltage go up Once it reaches 2 0 it will reset to OV and start rising up again If you switched it OFF at wrong value then you have to turn OFF the power and repeat the entire process For Idle Current setup repeat steps above with both MCS and IDL switc
4. BSD 071 User Manual Interinar Electronics LLC USER MANUAL BSD 071 SINGLE AXIS DRIVER FOR BIPOLAR AND UNIPOLAR STEP MOTORS INTERINAR ELECTRONICS LLC http www interinar com rev 3 20 2012 BSD 071 User Manual Interinar Electronics LLC Copyright Information 2006 2011 Interinar Electronics LLC All rights reserved This document is furnished exclusively for the customers of Interinar Electronics Other uses are unauthorized without written permission of Interinar Electronics Information contained in this document may be updated from time to time due to product improvements and may not conform in every respect to former issues Disclaimer of Liability Interinar Electronics is not responsible for special incidental or consequential damages resulting from any breach of warranty or under any legal theory including lost profits downtime goodwill damage to or replacement of equipment or property or any costs of recovering reprogramming or reproducing any data stored in or used with Interinar products Interinar Electronics is also not responsible for any personal damage including that to life and health resulting from use of any of our products Customer takes full responsibility for any application where Interinar products are implemented Interinar Electronics Technical Support Email support interinar com Website http www interinar com USER MANUAL enn 1 1 HARDWARE REFERENCE 3 1 1 OVERV
5. Default OFF Allowed position during boot up ON or OFF Allowed position in normal operation ON or OFF Used in selecting step mode see Table 6 Connected directly to MS1 Pin 8 on J2 header Must be OFF if controlled externally via J2 header Table 6 Microstepping Resolution SW1 5 SW1 6 MS2 MS1 RESOLUTION STEP MODE ON ON 1 FULL OFF ON 1 2 HALF ON OFF 1 4 QUARTER OFF OFF 1 16 SIXTEENTH Sw1 sw1 sw1 sw1 6 6 6 6 5 5 5 5 4 4 4 4 3 3 3 3 2 2 2 2 1 1 1 1 FULL 1 2 1 4 1 16 14 05 06 LED INDICATORS LED indicators are located next to the TP1 Table 7 LED Indicators GREEN RED D5 D6 DESCRIPTION ON OFF Power is ON Normal Mode FLASH ON Setup Mode ON ON Thermal Overheat Thermal Overheat indicator turns ON at 65 C 149 F and turns back OFF at 55 C 131 F 2 CONNECTING TO BSD 071 21 POWER SUPPLY Stabilized power supply 14 to 45 Vdc Non stabilized power supply 14 to 31 Vdc Note for a non stabilized power supply specifically rectifier capacitor type Max Allowed Voltage is lower in order to prevent overvoltage and damage to the driver This type of overvoltage condition may occur when the driver is disabled the load is not present or very low The additional electrolytic capacitor might be added to lower ripple cur
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7. Implemented Reserved for future use DO NOT CONNECT TO THIS PIN 1 2 3 10 PIN 10 GND Signal Ground Signal Ground return path for all inputs and 5V output Must be always connected to the Gnd of the controlling device Should not be used as a power ground or for any other purpose 13 SW1 DIP SWITCH The 6 position dip switch is used for setting motor current and configuring the driver Each individual switch is numbered from 1 to 6 For example SW1 2 means switch 2 on SW1 Table 4 DIP SWITCH SW1 Switch SWITCH DESCRIPTION LABEL 1 motor current setup MCS 2 idle motor current IDL 3 current decay setup FD2 4 current decay setup FD1 5 step mode MS2 6 step mode 51 1 3 1 1 SW1 1 MCS Motor Current Setup Default OFF Allowed position during boot up OFF ON Allowed position in normal operation OFF Used in modes Motor Current Setup and Idle Motor Current Setup Function during boot up when ON the driver will enter Motor Current Setup mode or Idle Motor Current Setup if IDL is also ON The Red Led will stay ON while the Green Led will flash BSD 071 User Manual Interinar Electronics LLC SW1 eNwWw AAD SETUP 1 3 1 2 SW1 2 IDL Idle Motor Current Setup or Idle Motor Current Mode Default OFF Allowed position during boot up OFF ON Allowed position in normal operation OFF ON Used in modes Idle Motor Curr
8. arm Output ALM 10 Ground GND 1 2 3 1 1 Enable Input active LOW Pull up to 5V thru internal 4 7kQ resistor When LOW all motor outputs are ENABLED motor is energized When HIGH all motor outputs are DISABLED but translator is still processing Step Direction PFD1 PFD2 51 and 52 signals This condition may result in initial position error when ENABLE is used to start and stop the motor not recommended The driver must be ENABLED in advance before Step and Direction changes The driver will always stop powering the motor when ENABLE signal is HIGH absent or not connected Available also on terminal 4 of 1 2 3 2 PIN 2 5V Output 5V DC Up to 100mA can be drained from this pin to supply power to the external logic May be left disconnected if not used 1 2 3 3 PIN S Not Connected Reserved for future use 1 2 3 4 PINF4 RST Reset Input active LOW Pull up to 5V thru internal 4 7kQ resistor When LOW all motor outputs are OFF and translator is set to predefined home state STEP input is ignored until RESET goes back HIGH Minimum pulse width is 200ns If longer than 1us the driver will enter sleep mode When coming out of sleep mode wait 1 ms before issuing a STEP command May be left disconnected when not used 1 2 3 5 PIN 5 DIR Direction Input active LOW Pull up to 5V thru internal 4 7kQ resistor Determines the direction of the rotatio
9. ection Table 7 Parameters for bipolar 4 wire motor MODE POWER CURRENT VOLTAGE TORQUE Bipolar 100 100 100 100 2 3 2 6 WIRE MOTORS Motors with 6 leads can be connected in two different ways 1 Bipolar Series connection The center tap is not used Both ends of each phase are connected to the driver In series connection motor should be operated at 70 of the rated current Running motor at full rated current will saturate and overheat the motor The series connection is preferred method because it produces less heat in the driver and produces higher torque Not recommended for high speed operation STEP MOTOR Figure 5 Bipolar series connection of 6 wire motor 2 Unipolar connection One end of each phase is insulated The other end and center tap are connected to the driver The driver should be adjusted to full rated current of the motor This connection works better at higher speeds 11 BSD 071 User Manual Interinar Electronics LLC STEP MOTOR Figure 6 Unipolar connection of 6 wire motor Table 8 Parameters for 6 wire motor MODE POWER CURRENT VOLTAGE TORQUE Bipolar Series 100 70 140 140 Unipolar 100 100 100 100 2 3 3 8 WIRE MOTORS This motor can be connected in three ways 1
10. ent Setup normal operation with Idle Current reduction 1 3 1 3 SW1 3 FD2 Current Decay Selection Default ON DO NOT CHANGE IT IF DRIVER IS ENABLED WILL CAUSE DRIVER DAMAGE Allowed position during boot up OFF ON Allowed position in normal operation OFF ON Used in modes current decay selection see Table 5 1 3 1 4 SW1 4 FD1 Current Decay Selection Default OFF DO NOT CHANGE IT IF DRIVER IS ENABLED WILL CAUSE DRIVER DAMAGE Allowed position during boot up OFF ON Allowed position in normal operation OFF ON Used in modes current decay selection see Table 5 Table 5 CURRENT DECAY SELECTION SW1 3 AND SW1 4 SW1 3 SW1 4 MODE ED2 FDI MODE 1 2 1 4 1 16 OFF OFF Fast 1 2 1 4 1 16 ON OFF 11 default 1 2 1 4 1 16 OFF ON 26 1 2 1 4 1 16 ON ON Slow Full 1 X X Slow SWi SWi SW1 sw1 6 6 6 6 5 5 5 5 4 4 4 4 3 3 3 3 2 2 2 2 1 1 1 1 FAST 11 26 SLOW 1 3 1 5 SW1 5 Microstepping MS2 Default OFF Allowed position during boot up ON or OFF Allowed position in normal operation ON or OFF Used in selecting step mode see Table 6 Connected directly to MS2 Pin 7 on J2 header Must be OFF if controlled externally via J2 header BSD 071 User Manual Interinar Electronics LLC 1 3 1 6 SW1 6 Microstepping MS1
11. f Time current regulator for Constant Current operation Internal Under Voltage Lock Out protection Thermal Shutdown protection Thermal Overheat indicator Crossover Current protection Single voltage power supply Large heat sink Easy mounting N BSD 071 User Manual Interinar Electronics LLC 12 CONNECTORS All connectors are easy accessible and located on the front of the driver 32320 3232 53 laces o NOULIT FRAN ENE HNE Figure 1 Connectors and Indicators 121 J1 POWER AND MOTOR CONNECTOR Connector type Standard 5mm 6 pole terminal block wire size 26 to 12 AWG Table 1 J1 POWER AND MOTOR CONNECTOR Terminal PIN DESCRIPTION LABEL 1 OUTB phase B B 2 OUTB phase B B 3 OUTA phase A A 4 OUTA phase A A 5 Positive Voltage Supply VB 6 Negative or Common Voltage Supply GND 1 2 1 1 VB POWER Positive voltage supply in reference to GND Should be connected directly to the positive terminal of the power supply 1 2 1 2 GND POWER Power supply ground Should be connected the shortest way to the ground or common of the power supply Use minimum 18AWG wirer or thicker For longer distance use 16AWG Polarity reversal is NOT ALLOWED and will cause permanent damage to the driver 1 2 1 3 OUTA OUTA OUTB OUTB MOTOR OUTPUTS Two pairs of terminals each belonging to the same motor phase are l
12. hes in ON position Allows for adjusting Idle Current from 0 to 100 of the value set above For example if motor current was set at 4 0A the idle current can be set to any value from 0 to 4 0A but not above 4 0A 32 NORMAL MODE The BSD 071 will function properly only in Normal Mode The MCS must be OFF before the power is turned ON The IDL may be OFF no Idle Current reduction or ON Idle Current reduction activated The position of the SW1 2 thru SW1 6 is irrelevant for selection of Normal Mode and can be changed at any time except for FD1 and FD2 which should be changed only with driver Disabled swi Nu AUA Hor 1 NORMAL 14 BSD 071 User Manual Interinar Electronics LLC The BSD 071 will energize the motor only when ENABLE signal is low The motor will start rotating if the STEP pulse is present on STP input If IDL switch is ON the driver will lower motor current 1 3 sec after last step pulse The new current level will remain at level as set during Idle Current setup The driver will restore original current within 90us after receiving next step pulse The direction of the rotation depends on signal level on DIR input Either one J4 or J2 can be used to connect inputs EXTERNAL CONTROLLER GROUND DIRECTION STEP y 8 1 y open collector used as an example ENABLE Figure 10 Normal operation of
13. lockwise and while High Counterclockwise Swapping wires of just one phase will also reverse direction Available also on pin 5 of J2 1 2 2 3 STP Step Input active LOW Pull up to 5V thru internal 4 7kQ resistor A Low to High transition rising edge advances the motor one increment The size of the increment is determined by MS1 and MS2 see Table 6 Minimum Step pulse High Time width is 1 0us Minimum Step pulse Low Time is 1 0us Available also on pin 6 of J2 1 2 24 Enable Input active LOW Pull up to 5V thru internal 4 7kQ resistor When LOW all motor outputs are ENABLED motor is energized When HIGH all motor outputs are DISABLED but translator is still processing Step Direction PFD1 PFD2 MS1 and MS2 signals This condition may result in initial position error when ENABLE is used to start and stop the motor not recommended The driver must be ENABLED in advance before Step and Direction changes The driver will always stop powering the motor when ENABLE signal is HIGH absent or not connected Available also on pin 1 of J2 BSD 071 User Manual Interinar Electronics LLC 1 2 3 J2 INPUT CONNECTOR Connector type double row 10 pin male header 0 100 pitch shrouded Table 3 INPUT CONNECTOR J2 Pin PIN DESCRIPTION LABEL 1 Enable ENA 2 5V 5V 3 Not connected NC 4 Reset RST 5 Direction DIR 6 Step STP 7 MS2 MS2 8 MS1 MS1 9 Al
14. n of the motor Any changes to this input do not take effect until the next Step rising edge If the motor connections follow correct phase order then when this input is Low the direction will be Clockwise and when High Counterclockwise Swapping wires of just one phase of the motor will reverse direction Available also on terminal 2 of BSD 071 User Manual Interinar Electronics LLC 1 2 3 6 PIN 6 STP Step Input active LOW Pull up to 5V thru internal 4 7kQ resistor A Low to High transition rising edge advances the motor one increment The size of the increment is determined by MS1 and MS2 see Table 6 Minimum Step pulse High Time width is 1 0us Minimum Step pulse Low Time is 1 0us Available also on terminal 3 of 1 2 3 7 PIN 7 MS2 Input active LOW Pull up to 5V thru internal 4 7kQ resistor Together with MS1 determines the size of the increment of the rotation see Table6 Changes to these inputs do not take effect until the next STEP rising edge If this pins is used the SW1 5 must be OFF Available also on dip switch SW1 5 1 2 3 8 PIN 8 MS1 Input active LOW Pull up to 5V thru internal 4 7kQ resistor Together with MS2 determines the size of the increment of the rotation see Table6 Changes to these inputs do not take effect until the next STEP rising edge If this pins is used the SW1 6 must be OFF Available also on dip switch SW1 6 1 2 3 9 PIN 9 ALM Not
15. ocated next to each other Use thicker wires possibly shielded for longer distance and high currents Mixing wires of two phases together is prohibited and will result in permanent damage to the driver BSD 071 User Manual Interinar Electronics LLC 1 2 2 J4 SIGNAL INPUT CONNECTOR Connector type Standard 5mm 4 pole terminal block wire size 26 to 12 AWG All three inputs have 4 7kQ pull up resistors to 5V This way controlling the input is as simple as shorting it to the Ground Any sinking device may be used for that purpose Specifically this can be done with a jumper switch open collector open drain direct output of TTL gate In all other cases it is important to make sure there will be no voltage exceeding 5V present on any input at any time Table 2 J4 SIGNAL INPUT CONNECTOR Terminal PIN DESCRIPTION LABEL 1 Ground GND 2 Direction DIR 3 Step STP 4 Enable ENA 1 2 2 1 GND Ground Signal Ground return path for all three inputs Must be always connected to the Gnd of the controlling device Should not be used as a power ground or for any other purpose 1 2 2 2 DIR Direction Input active LOW Pull up to 5V thru internal 4 7kQ resistor Determines the direction of the rotation Any changes to this input do not take effect until the next Step rising edge If the motor connections follow correct phase order then while this input is Low the direction will be C
16. rent at least 3300uF 50V This capacitor should be mounted directly to the power terminal block without any extension wires see Figure 2 BSD 071 User Manual Interinar Electronics LLC 7 TO POWER SUPPLY J1 j EL CAP Co Co Figure 2 Power Supply Connection 22 EXTERNAL CONTROLLER The BSD 071 requires external Enable Step and Direction signals connected to the corresponding poles of J4 terminal block or J2 header All inputs are pulled up internally to 5V thru 4 7kQ resistors The TTL 5V level interface open collector opto coupler relay or switch can be used directly The CMOS 3 3V operation is possible but not guaranteed TTL LOGIC _ a OPEN COLLECTOR OPTO COUPLER vt Y ENA STP DIR J4 RELAY E SWITCH TO GND J4 Figure 3 Compatible circuits 23 STEP MOTOR The step motor should be connected to J1 terminal block NEVER CONNECT OR DISCONNECT THE MOTOR WHILE THE POWER IS ON INSULATE UNUSED MOTOR LEADS SEPARATELY DO NOT CONNECT ANY MOTOR LEADS TO GROUND OR POWER SUPPLY 2 3 1 4 WIRE MOTORS This type of motor can be connected only in one way see Figure4 10 BSD 071 User Manual Interinar Electronics LLC 1 STEP MOTOR Figure 4 Bipolar 4 wire motor conn
17. the driver 4 ELECTRICAL AND MECHANICAL SPECIFICATION 41 ELECTRICAL RATINGS Table 10 Absolute maximum ratings CHARACTERISTIC SYMBOL RATING UNITS Motor Supply Voltage VB 45 Motor Current Tout 6 3 A Logic Input Voltage Vin 0 3 to 5 5 V Operating Ambient Temperature Ta 20 to 85 C Table 11 Electrical characteristics CHARACTERISTIC SYMBOL Condition Min Typ Max UNITS Supply Voltage VB 14 45 V Motor Current Tout Standard 95 6 3 A Logic Input Voltage VIH 1 3 5 V VIL 0 1 5 V STEP Minimum HIGH pulse width tA 1 us STEP Minimum LOW pulse width tB 1 us Setup time tC 200 ns Hold time tD 200 ns Maximum frequency fSTP 500 kHz Thermal Overheat Indicator On Tov on 65 C Thermal Overheat Indicator Off Tov off 55 C 15 BSD 071 User Manual Interinar Electronics LLC 42 MOUNTING Recommended mounting position is vertical In such position the natural air convection cooling is most efficient Mounting on metal surface will further improve cooling When forced air cooling is used then the air flow should be oriented along the fins of the heat sink Screws 6 32 or metric M3 5 at least 2 screws placed diagonally screws are not included 2 00 1 60 1 0 150 o oO o R0 075 ae 0 15 U Figure 1 Moun
18. ting base dimensions 16
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