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How to Handle Space Stepper Motors 

 

10 

MA 1313-A001 EN 

2.1  Heating in Vacuum Environment 

Normally, the heat generated by a stepper motor in a vacuum is largely dissipated by con-
duction through the mounting surface. 
To avoid overheating the motor, the maximum specified temperatures must be taken into 
account when determining duty cycles for setting the peak, run and stop (holding) current 
values.    

Содержание phySPACE

Страница 1: ...Extreme Precision Positioning Manual 1313 A001 EN How to Handle Space Stepper Motors...

Страница 2: ...phytron 11 2019 Manual 1313 A001 EN How to Handle Space Stepper Motors TRANSLATION OF THE GERMAN ORIGINAL MANUAL...

Страница 3: ...the accuracy of this technical manual All infor mation contained in this manual is correct to the best of our knowledge and belief but cannot be guaranteed Furthermore we reserve the right to make im...

Страница 4: ...nsport Cover 13 3 4 Rating Plate 14 4 Configuration and Use Limitation 15 4 1 Motor Selection 15 4 2 Use limitation 16 5 Mounting 17 6 Electrical Connection 18 6 1 Maximum Allowable Phase Current 19 6...

Страница 5: ...injury or death from electric shock WARNING Serious injury pos sible Indicates a possible risk of serious injury or death WARNING Serious injury from electric shock Indicates a possible risk of seriou...

Страница 6: ...nstallation and operation of systems may only be performed by qualified and trained personnel These persons should be able to recognize and handle risks emerg ing from electrical mechanical or electro...

Страница 7: ...s This can result in injury Make sure that before operation all moving parts are fixed WARNING Injury from the rotating shaft Hair clothes and jewellery can be wound up and trapped by the rotating mot...

Страница 8: ...ntact protection 1 3 Handling instruction i CAUTION Possible damage The stepper motor s rotor is strongly magnetic Metal or soft iron particles penetrating through openings might damage motor function...

Страница 9: ...ustomer When operating a motor that was as sembled improperly danger to life could be caused by electric shock The customer must not carry out mechanical or electrical modifica tions of the motor The...

Страница 10: ...ge protects the stepper motor against contamination moisture and mechanical damage On opening the packaging several precautions must be observed to maintain the defined stepper motor s specifications...

Страница 11: ...the heat generated by a stepper motor in a vacuum is largely dissipated by con duction through the mounting surface To avoid overheating the motor the maximum specified temperatures must be taken int...

Страница 12: ...p or similar material protects the motor during transport 3 2 Outer Package The outer package is a gas tight evacuated 100 LDPE foil package with the rating plate fixed A desiccant bag and humidity in...

Страница 13: ...How to Handle Space Stepper Motors 12 MA 1313 A001 EN Fig 3 Humidity indicator...

Страница 14: ...a space stepper motor with bare hands Wearing safety gloves helps to keep away finger sweat and oil residues from the stepper motor Such residues cannot be completely removed with IPA and may need the...

Страница 15: ...tor Keep the rating plate Space stepper motors are only marked with a serial and item num ber as well as model FM QM EM Therefore we recommend to remove the rating plate from the outer packaging and t...

Страница 16: ...nfiguration and Use Limitation 4 1 Motor Selection Our sales team will assist you with the configuration The following scheme will help you select the suitable motor Fig 5 Selection of the motor size...

Страница 17: ...2 IN in vacuum Short term operation with higher current Ion is possible depending on the duty cycle ratio ton to toff applies to speed 400 rev min IN nominal motor current Ion IN overcurrent How long...

Страница 18: ...h openings into motor or gear ing When handling stepper motors the environment should be kept very clean Penetrating foreign substances dirt or humidity could seriously damage motor function or cause...

Страница 19: ...s The windings can be connect ed differently 4 leads parallel windings or cold redundant 4 leads parallel windings Cold redundant 8 leads unipolar or bipolar control mode 4 leads serial windings bipol...

Страница 20: ...low control pulse frequencies The motor has up to 40 more torque in the bipolar mode compared to unipolar control with the same phase current at low frequencies 5 lead or 6 lead stepper motors Fig 6...

Страница 21: ...mode At half step or mini step operation of the control unit the rated current is the r m s value The current tables in Phytron s power stage manuals show r m s values 6 2 Leads 6 2 1Marking of the L...

Страница 22: ...be determined by measurement Recommendation Keep the PTFE tubes If disconnecting the stepper motor the markings should be reattached 6 2 2 Connecting the Leads i CAUTION Possible damage The leads of...

Страница 23: ...size 19 to 32 Phytron stepper motors turns counter clockwise if viewed from the front DIN 42 401 part 1 The motors of size 42 and above turn clockwise The motor direction can be reversed by exchanging...

Страница 24: ...ny one time In case of cold redundant windings both winding systems are fitted with a temperature sensor 7 1 Type K Thermal Element With space stepper motors Type K NiCr Ni thermal elements in the tem...

Страница 25: ...ions They con sist of a wound resistance wire that is mounted and supported inside a cylindrical ceramic case Pt resistor Rated resistance at 0 C R0 Resistance at 100 C R100 Pt100 100 0 1 138 5 0 27 P...

Страница 26: ...t 0 3 K 0 80 K The platinum sensors are connected with four leads in order to enable independent meas uring of the wire resistance The leads are insulated with Kapton foil and marked with PTFE tubes...

Страница 27: ...imal outgassing levels 8 2 Baking out The stator with assembled coils is placed in vacuum better 10 6 mbar and baked at 200 C for 24h This first outgassing procedure is performed on stator level to ma...

Страница 28: ...otors can be stored for up to 2 years in the original foil package without influence to function or specified characteristics The storing temperature should be between 5 and 50 C After removing the fo...

Страница 29: ...Phytron GmbH Industriestra e 12 82194 Gr benzell T 49 8142 503 0 F 49 8142 503 190 www phytron eu...

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