Preparing the VSS/VSH Stepper Motors

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Jared Hines
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VSS / VSH xtreme nvironment Stepper Motors - Vacuum to mbar Winding Temperature 7 to + Radiation Hardened to J/kg nvironments Preparing the VSS/VSH Stepper Motors Phytron offers different categories

temperature range to Radiation resistance J/kg VSS-UHV, VSH-UHV - - Ultra High Vacuum to hpa ( mbar) Winding temperature range to Radiation resistance J/kg VSS-UHV, VSH-UHV ryo - - Ultra High Vacuum

environment operation lean room applications to clean room class The VSS/VSH series of Phytron stepper motors are designed to be used inside vacuum chambers.

Since the stepper motor is relatively simple in design, it can be adapted to operate in extreme physical environments with a few modifications.

1 VSS / VSH xtreme nvironment Stepper Motors - Vacuum to mbar Winding Temperature 7 to + Radiation Hardened to J/kg nvironments Preparing the VSS/VSH Stepper Motors Phytron offers different categories of extreme environment stepper motors: VSS-FV, VSH-FV - - Fine Vacuum to hpa ( mbar) Winding temperature range to 5 Radiation resistance J/kg VSS-HV, VSH-HV -7-7 High Vacuum to hpa ( mbar) Winding temperature range to Radiation resistance J/kg VSS-UHV, VSH-UHV - - Ultra High Vacuum to hpa ( mbar) Winding temperature range to Radiation resistance J/kg VSS-UHV, VSH-UHV ryo - - Ultra High Vacuum to hpa ( mbar) Winding temperature range 7 to Radiation resistance J/kg ustomized design Modified versions of the type VSS/VSH stepper motors: limatic applications Reduced magnetic emission ggressive environment operation lean room applications to clean room class The VSS/VSH series of Phytron stepper motors are designed to be used inside vacuum chambers. This eliminates the use of motion feed throughs that generate particulates. Since the stepper motor is relatively simple in design, it can be adapted to operate in extreme physical environments with a few modifications. Under normal conditions, only the bearings are subject to wear. For extreme environment applications, special windings, bearings and lubricants are used, as well as special insulating material and special adhesive. To accomodate most extreme environmental conditions, Phytron VSS/VSH stepper motors are provided in different grades. ach grade covers a vacuum rating, a temperature range and a radiation level. ssembly, cleaning and conditioning of the Phytron VSS/VSH stepper motors results in a low outgassing rate which makes Phytron the reliable choice for all the extreme environment applications. Optional ouble shaft VGPL low backlash gear KT thermocouple to monitor winding temperature in the range of to Pt resistor sensor to monitor winding temperature in the range of to + ouplings ustomized constructions Motors with spindle Motors with hollow shaft etc. Technical Information Two-phase stepper motors Holding torque from. mnm to 9.9 Nm iameters from 9 to 5 mm Standard number of steps Optional 7, 5 Step accuracy 5 % for.8 and.7 stepper motors esign voltage size 9 to 57: V size 5 to 5: V Protection class IP for vacuum version IP for temperature and radiation version (not for vacuum applications) Standard number of leads: optional 5, or 8 Outgassing holes to avoid pockets of trapped gas Stepper Motors VSS / - G

2 imensions / VSS 9 57 VSS 9 57 VSS 9 57 Flange g ØG Ø ØG F F Fig. Fig. VSS 9 57 imensions in mm Size Type F F G ) ) G K L M N 9 VSS M.5 5 VSS VSS VSS VSS VSS VSS VSS ) Shaft diameter tolerances: VSS 9 to :.5 to.9, from VSS : g5 Phytron-lektronik GmbH Industriestraße, 89 Gröbenzell/Germany Tel Fax info@phytron.de VSS / - G /

3 lectrical and Mechanical haracteristics lectrical haracteristics Mechanical haracteristics Size Standard Part steps/rev. Parallel Windings ) ( leads) ) ) ) Series Windings ( leads) ) ) ) Unipolar onnection (5 or leads) ) ) ) ) 5) 5) Holding Torque etent Torque Rotor Inertia axial Loads radial Mass 9 VSS 9... VSS 9.. VSS 9.. mh mh mh mnm mnm kg cm² N N kg VSS 5... VSS 5.. VSS VSS.. VSS.. VSS...5 VSS.. VSS.. VSS VSS.. VSS.. VSS...5 VSS.. VSS.. VSS VSS 5.. VSS VSS VSS 57.. VSS VSS ) : Phase current ) : Phase resistance ) : Phase inductanc e ) Holding torque in bipolar mode with parallel windings, phases ON at rated current 5) 7 mnm ~ inoz ) Standard wiring at delivery (if no wiring mode was given in the order) esign voltage V (operation with SLV type supply) Important: ll values given above were measu at room temperature of 5 (77 F) and atmospheric pressure. old letters = Prefer types VSS / - G /

4 VSS 9 57 Stepper Motor with VGPL Low acklash Gear Stepper Motor with VGPL Gear VGPL P Z Y O ' VGPL Th8 Uh U S ø ø ø' w U Z.5 8 R Q V Fig. VGPL / VGPL - 5 x Key IN 885 Z P Y O ' VGPL 5 VGPL 5 5 Th8 Uh S ø ø ø' W W R Q V V Fig. Gear VGPL VGPL VGPL VGPL 5 Gear VGPL VGPL VGPL VGPL 5 imensions in mm Mass (motor + gear) Stepper Motor ' ' stages O P Q R S T U V W X Y Z stages kg VSS VSS VSS VSS VSS VSS VSS VSS Stepper Motor VSS 9 VSS 5 VSS VSS VSS VSS VSS 5 VSS 57 Stages Mechanical haracteristics Gear ) Gear ) Max. torque Radial load xial load fficiency backlash inertia arc-min Nm kg cm² N N % ' 5' 5' ' ' 5' ' ' 5' ' ' 5' M.5x M x5 M x8 M 5x8 : : : : : 7: : : 5: : : 7: xx xx 5: : 8:.5: 8: : 5: : 8:.5: 5: : Reduction ratio 7: 8: : 5.: 5: : 5: :.5: : : 9: 9: 8: 5: 5: : : : : 8: 5.: 9: :.5: : : 8: 5: 5: ) no load ) center of shaft Phytron-lektronik GmbH Industriestraße, 89 Gröbenzell/Germany Tel Fax info@phytron.de VSS / - G /

5 VSH 5 5 / Large Stepper Motors for xtreme nvironments VSH Stepper Motors Large stepper motors for extreme environments VSH 5 5 N vailable for FV, HV, UHV and UHV vacuum classes iameter 5 to 5 mm (.5" to.9") Standard step angle.8 ( steps/rev.) Standard -leads motor, parallel windings ØG I J H ØG Ø M K Holding torques of.8 Nm ( in-oz) to 9.9 Nm ( in-oz) esign voltage V for operation with safe/double separation to mains F F Fig. 5 L M K Fig. VSH 5 5 imensions in mm Size Type F F G G H I J K L M N 5 VSH VSH VSH VSH lectrical haracteristics Mechanical haracteristics Type oil oil oil ) 5) 5) Loads ) ) ) ) ) ) ) ) ) Holding torque etent torque Rotor inertia axial radial Mass mh mh mh Nm Nm kg cm² N N kg 5 VSH VSH VSH VSH ) : Phase current in the bipolar mode ) : Phase resistance ) : Phase inductance ) Holding torque in bipolar mode with parallel windings, phases ON at rated current 5) 7 mnm ~ inoz ) Shaft diameter tolerances: g5 Important: ll values given above were measu at room temperature of 5 (77 F) and atmospheric pressure. old letters = Prefer types, standard coil VSS / - G / 5

6 VSS 9 5 / Torque and Power haracteristics Torque haracteristics (T) The curves correspond to the limit values of the drive torque as a function of the control pulses, for a motor voltage V. The curves were plotted using a bipolar stepper motor driver in the half step mode. Power haracteristics (P).5 rive torque [mnm] 5 T (V = V) VSS.., For each motor, the power at the motor shaft is plotted as a function of the frequency..5 P (V = V) 7 mnm ~ oz-in.5 Fig rive torque [mnm].5 T (V = V) VSS 9.., 8 rive torque [mnm] 8 T (V = 7 V) VSS.., P (V = V) P (V = 7 V) Fig Fig rive torque [mnm] 8 T (V = V) VSS 5.., 5 rive torque [mnm] 5 T (V = 9 V) VSS P (V = V) P (V = 9 V) Fig Fig Phytron-lektronik GmbH Industriestraße, 89 Gröbenzell/Germany Tel Fax info@phytron.de VSS / - G /

7 VSH 5 5 / Torque and Power haracteristics Torque haracteristics (T) The curves correspond to the limit values of the drive torque as a function of the control pulses, for a motor voltage V. The curves were plotted using a bipolar stepper motor driver in the half step mode. Power haracteristics (P) For each motor, the power at the motor shaft is plotted as a function of the frequency. 7 mnm ~ oz-in 5 rive torque [Nm],5 T (V = 9 V) VSH rive torque [Nm] 5 T (V = V) VSH.,5 P (V = 9 V) 5 P (V = V) Fig Fig rive torque [Nm].5 T (V = V) VSH rive torque [Nm] 8 T (V = V) VSH P (V = V) 5 P (V = V) Fig. Fig VSS / - G / 7

8 lectrical onnection / Rated urrent / Maximum llowable urrent / Ordering Information lectrical onnection Rated urrent 8-Leads Unipolar or ipolar ontrol Mode -Leads ipolar ontrol Mode Unipolar ontrol Mode Phase Phase Standard Wiring G H F black brown violet white Parallel Windings black W W W W W W W W M W W Start of winding Serial Windings black W W W W W W The motor rating plate has the rated phase current [] as the last digits of the motor's type number. xample: VSS.., Motor type: VSS Number of steps: Rated current: The rated current is defined as the phase current at full step operation, at bipolar control mode, with parallel connected windings (standard). ccording to the connection mode, the motor windings receive different currents. Therefore, for identical power dissipation in the motor, the allowable phase current is determined by the connection mode (see table below). t 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. Ordering Information W 5-Leads W F white W -Leads W Stepper Motor Series Size VSS / VSH 9 5 VSS..,5 - - VGPL / - HV - KT llowable Phase urrents for Identical Power issipation ipolar control mode Full step operation Unipolar control mode Full step operation Steps/revolution Rated current 7 / / 5 (depends on size) mps/phase (bipolar, parallel windings) -lead motor -lead motor 5-lead motor -lead motor Option Option VGPL nvironment Options ouble shaft Low backlash gear / Reduction ratio FV / HV / UHV / UHV / Space Thermocouple KT, Resistor Sensor Pt, Special: X parallel windings rated current series windings 5 % of rated current 7.7 % of rated current 7.7 % of rated current Phytron-lektronik GmbH Industriestraße, 89 Gröbenzell/Germany Tel Fax info@phytron.de VSS / - G / 8

Overview: Extensions. Stepper Motors

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