User Manual for 250 series Stepper Motor peristaltic
Contents
1. User Manual UK manufacturers of quality peristaltic pumps SMA amp SMB User Manual Voltage Control Miniature Integrated Stepper Motor Controller Williamson Manufacturing Company Ltd The Street Poynings West Sussex BN45 7AQ United Kingdom Tel 44 0 1273 857752 Fax 44 0 1273 857511 Web www wmcpumps com The Williamson Manufacturing Company Ltd provides no warranty on usage of pumps We recommend that life tests be carried out prior to use This information is given in good faith and believed to be correct and current at time of publishing We cannot accept responsibility for its inaccuracy or any errors or omissions contained herein Copyright The Williamson Manufacturing Company Ltd 2015 SMA SMB Voltage Control Integrated Stepper Motor Controller SMA SMB Voltage Control Miniature Integrated Stepper Motor Controller Miniature Integral Design Miniature size 42 3mm x 42 3mm x 16 5mm L x W x H Integrally designed to fit onto motors seamlessly as well as work standalone Die cast aluminium enclosure improved heat dissipation and durability Motor Driver Features 10 30VDC input voltage Max 2A adjustable phase current 16 micro stepping Dual full H bridge with PWM constant current control Control features Embedded microcontroller Self pulse generation automatic run on power up Speed control through on board trimmer 0 15 1900 RPM SMA Speed control through externa2. Maximum Ratings may cause permanent damage to the device This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied Exposure to maximum rating conditions for extended periods may affect device reliability Dielectric Strength Environmental Requirements Avoid dust oil mist and corrosive gases Working 40 C 85 C Environment lt 80 RH no condensation no frosting Vibration Size and Weight 42 3mm x 42 3mm x 16 5mm Lx W x 0 1KG Page 7 SMA SMB Voltage Control Integrated Stepper Motor Controller Functional Description Supply Voltage SMA SMB controller accepts a wide range input voltage from 10 to 30 VDC In general higher supply voltage improves motor performance under high speed situations but also increases the power loss and temperature rise Output Phase Current The controller is capable of providing a maximum 2A phase output current In specific application the peak output current needs to be adjusted to meet the rated motor current A trimmer potentiometer is provided to serve this purpose at the bottom of the controller as show in the figure 3 1 Measuring the mapped voltage Va when tuning the trimmer provides an easy way to set the output current A mapped voltage Va of 0 4V proportionally represents 0 2A Please note that the controller needs to be powered befo
3. K 0 15 153 Factory Default Open Short 8 4 08K 0 15 76 5 Short Open 8 1 04 0 15 38 25 Page 9 SMA SMB Voltage Control Integrated Stepper Motor Controller Functional Description The microprocessor of the SMA SMB is capable of ramping up the current speed to the desired speed in 0 3 seconds even when the speed control voltage is changing This feature makes the sudden increase of the desired speed become possible To guarantee the motor can stop as quick as possible the deceleration rate is set to infinity which means the motor will output a desired speed lower than the current speed immediately Page 10 SMA SMB Appendix A Dimension iN fl fi lf 1 as 16 4 TA y ma p pa Y 0 a 10 2 4 Units mm Page 11
4. ase always keep screws lightened Jumper J1 J2 To avoid loss of terminal screws please always keep screws lightened Page 3 SMA SMB Voltage Control Integrated Stepper Motor Controller Control Terminal Terminal Symbol Description 1 V Supply voltage 10 30 VDC 2 GND Supply voltage ground 3 ENA Enable Disable H bridge internally pulled up 4 ON Run Stop internally pulled up 5 H L High Low speed range selection internally pulled up 6 DIR Direction input internally pulled up 7 Vref 5V Reference Voltage Output NEVER link Vref to GND 8 SPD Speed Control Voltage input 0 5 TNOTICE Only SMB provides with port Motor Terminal Terminal Description Connect to stepper motor phase B B Connect to the stepper motor phase B To avoid damaging make sure the phase winds are connected correctly Resistance between leads of different phases is usually gt 100 Resistance between leads of the same phase is usually lt 1000 Page 4 SMA SMB Typical Application The SMA controller is equipped with a speed adjusting trimmer SMB allows the user to use an external potentiometer or external voltage to control the speed SMA using On board Trimmer 10 30VDC Enable Run Stop H L Speed Direction SMB with External Potentiometer SMB Controller POT For users that need to use an external potentiometer POT to control the speed SMB pro
5. e the accuracy of the measurements of the speed control voltage the user should select the proper speed range Since the voltage measurement accuracy is 8bit The controller uses a 10bit A D converter and abandon the last two digits to supress the noise the speed adjusting is not continuous but has an incremental of 1 255 of the max speed Figure 3 1 Speed Range Jumper 412 Speed Range Jumpers High Speed Range When the desired speed is high the speed range should be selected by leaving the terminal 5 open I E not connected or linking to 5V In the high speed range there are two jumpers at the bottom of the controller which can further limit the range of the speed The relationship between the two jumpers and the speed range is given in the following table J1 J2 Pulse Frequency Hz Speed for 1 8 stepper RPM Note Open Short 100 102K 1 875 1912 5 Short Short 100 102K 1 875 1912 5 Factory Default Open Short 100 51K 1 875 956 25 Short Open 100 25 5K 1 875 478 13 Low Speed Range When the desired speed is low the low speed range should be selected by linking the terminal 5 to ground I E terminal 2 In the low speed rage there are two jumpers at the bottom of the controller which can further limit the rage of the speed The relationship between the two jumpers and the speed range is given in the following table J1 J2 Pulse Frequency Hz Speed for 1 8 stepper RPM Note Open Short 8 8 16K 0 15 153 Short Short 8 8 16
6. l potentiometer 0 15 1900 RPM SMB Speed control through 0 5 voltage input 0 15 1900 RPM SMB Acceleration function Switch control run stop direction enable shutdown Automatic current reduction power saving Description The SMA SMB stepper motor controller is a microprocessor embedded voltage control miniature stepper motor controller With the SMA SMB the motor speed can be controlled by an analogue voltage in three optional ways 1 The on board trimmer 2 an external potentiometer or 3 an external voltage Run stop direction high low speed range and enable disable can be controlled simply by shorting the corresponding terminal to the ground The controller can run the motor without user control device The microprocessor of the controller is capable of ramping up the current speed to the desired speed within 0 3 seconds even when the speed control voltage is changing This feature makes the sudden increase of the desired speed possible The controller can provide 0 2A adjustable phase current The mixed decay current control reduces the back EMF effect under high motor speed and improves the performance The controller can be mounted onto a NEMA 17 series stepper motor seamlessly The enclosure is made of die cast aluminium which provides a rugged durable protection and improves the heat dissipation Page 2 SMA SMB Terminal Description SMA Wiring Terminal avoid loss of terminal screws ple
7. re mapped voltage Va can be measured Reboot of the controller is required after the setup of the phase current Figure 3 1 Setup Phase Current 10 30VDC Current Adjusting Trim mer a Speed Control The controller s on board processor is able to produce 8Hz 102KHz step driving pulses Under 16 micro stepping that pulse rate equal to 0 15 1900 RPM for a speed for a 1 8 degree stepper motor The controller provides three methods to adjust the speed On board trimmer For SMA adjusting the on board trimmer will give the desired motor speed External potentiometer For users who need to use external potentiometer POT to control the speed SMB provides a 5V reference voltage output and a speed control voltage in out port The resistance of the POT should be between 5K and 10K ohms Less than 5K will result in excessive power consumption and larger than 1K will cause inaccurate measurement External control voltage For users who want to use an external voltage to control the speed facilitate the needs such as microprocessor D A control SMB provides a speed control voltage input port The external control voltage must share the common ground with the SMB controller In other words the ground of the external control voltage must be linked to the terminal 2 In addition the external Control range must be between 0 3V and 5 3V or damage could occur Page 8 SMA SMB Speed Range Selection To preserv
8. vides a 5V reference voltage output and a speed control voltage input port The resistance of the POT should be between 5K and 10K ohms Less than 5K will result in excessive power consumption and larger than 10K will cause inaccurate measurement Page 5 SMA SMB Voltage Control Integrated Stepper Motor Controller SMB with External Control Voltage NEVER LINK Stepper Motor Vref to GND Enable Run Stop Speed Direction External i Voltage For users who want to use an external voltage to control the speed to facilitate needs such as microprocessor D A control SMB provides a speed control voltage input port The external control voltage must share common ground with the controller In other words the ground of the external control voltage must be linked to the terminal 2 In addition the external control range must be between 0 3V and 5 3V Voltage outside the range could cause damage Page 6 SMA SMB Characteristics Absolute Maximum Ratings SUPPI VOL aoe 1 Ambient temperature under 1 4 C to 85 C Storage TOMO Sl AUC sesccncsnssnicscdewseswhoomeaataaiieintsaanaiteodesdidanepaivoxciulonndsaneeaaibusieeacouunadistonsoanaiunrepsiasnasdoossovansdnereersiaveiavedeamaatsunieonan OO C tO 150 Stresses above those listed under Absolute
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