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DUAL STEPPER MOTOR DRIVE MODEL SMD210 USER MANUAL ISSUE 1.6 For use with program version 1.76 COPYRIGHT RESERVED 2015

© Arun Microelectronics Ltd 2015 Section 3 Setting the motor phase current Instruments are shipped with the phase current set to 1 amp. The reco

© Arun Microelectronics Ltd 2015 Section 3 3.5 Acceleration profiles Under program control, an exponential acceleration/retardation table

© Arun Microelectronics Ltd 2015 Section 3 3.6 Stepping rate resolution The stepping rate is derived from a crystal-controlled clock frequency o

© Arun Microelectronics Ltd 2015 Section 3 End-of-travel The End-of-Travel inputs, EOT+ and EOT- are intended to prevent mechanisms being driven

© Arun Microelectronics Ltd 2015 Section 4 4. OPERATION OF VACUUM-COMPATIBLE STEPPER MOTORS (VCSM) It is assumed that the reader i

© Arun Microelectronics Ltd 2015 Section 4 4:3 RESONANCES. Stepper motors are classic second-order systems and have one or more natural re

© Arun Microelectronics Ltd 2015 Section 4 4:4 MECHANISMS FOR USE WITH VCSMs. The following section is an introduction to this topic and i

© Arun Microelectronics Ltd 2015 Section 4 Recirculating ball nuts for vacuum use have recently become available. These offer much higher effici

© Arun Microelectronics Ltd 2015 Section 4 4:6 LOW - POWER TECHNIQUES. In the design of small mechanisms there are several factors

© Arun Microelectronics Ltd 2015 Section 4 4:7 POSSIBLE CAUSES OF DAMAGE TO VCSMs. Vacuum motors must be de-magnetised before dis-assembly

© Arun Microelectronics Ltd 2015 | Section 1 1 Contents 2. INSTALLATION 2:1 Checks on receipt of the instrument. 2:2 Instrument installati

© Arun Microelectronics Ltd 2015 Section 5 5. PROGRAMMING THE SMD210 5:1 THE SMD210 DEMONSTRATION PROGRAM. The computer

© Arun Microelectronics Ltd 2015 Section 5 5:2 GENERAL NOTES ON SMD210 APPLICATION PROGRAMS. Familiarity with the commands and the operati

© Arun Microelectronics Ltd 2015 Section 5  Slow stepping and the Hold Command. The hold command ( h ) function is intended for power reduction

© Arun Microelectronics Ltd 2015 Section 5  Emergency stops. The fastest way to stop a motor while executing a program is to move the Program/Ma

© Arun Microelectronics Ltd 2015 Section 6 6. TROUBLESHOOTING.  Motor does not rotate. Check that the motor is wired to the conn

© Arun Microelectronics Ltd 2015 Section 6  No communication with host computer. Check that the SMD210 is set to “Remote” Ensure that the &quo

Appendix A Connectors ALL THE CONNECTORS REQUIRED ARE INCLUDED IN THE ACCESSORY KIT SUPPLIED WITH THE INSTRUMENT. A.1 Mains connector This is a

A.5 Limits connector This is a 5-pin DIN audio connector, types with or without latches are suitable. The use of these inputs is explained in secti

Appendix B  B.1 Host Computer Commands. To control the SMD210 from a remote computer a 3-wire serial link is required. The baud rate is intern

 B.5 Command Summary. Command and Arguments Type Description ± xxxxxx DP Move in specified direction x steps (1 - 999999) e.g. +2400 A x DP Set

© Arun Microelectronics Ltd 2015 | Section 1 4. OPERATION OF VACUUM-COMPATIBLE STEPPER MOTORS (VCSMs). 4:1 Operating temperature and run times.

J xxx,y P Jump to instruction number xxx (1 to N) if user input y (1, 2 or 3) is high (H) or low (L). e.g. J1,24H j xxx P Jump to instruction num

V<100C or V100C or V125C or V150C or V175C As indicated on the SMD210 front panel. V 4 DP Send software version number. Typical Response: V1.7

© Arun Microelectronics Ltd 2015 Section 2 2 Installation 2.1 Checks on receipt of the instrument On receipt of the instrument remove a

© Arun Microelectronics Ltd 2015 Section 2 2.4 Wiring of the motors to the vacuum feedthrough Feedthrough requirements Each motor requires s

© Arun Microelectronics Ltd 2015 Section 2 Connection to MLF18VCF or MLF18F If you are connecting crimp terminals directly to the feedthrough (i.e

© Arun Microelectronics Ltd 2015 Section 2 2.5 Wiring between the vacuum feedthrough and the drive Using AML cables Users of the MLF18 kit ne

© Arun Microelectronics Ltd 2015 Section 3 3 Operation 3.1 Front panel indication and controls Motor Moving Indicator A green &

© Arun Microelectronics Ltd 2015 Section 3 Joystick connector Connecting the AML model SMD210JOY joystick to this connector allows direction and