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Direct drive torque motor technology allow user to reach highly dynamic motion featured with: high positioning accuracy, bi-directional repeatability, motion stability and low friction. Rotary stages 8MRL80 have clear aperture of 5mm while 8MRLP80 have dedicated pneumatic collet holder dedicated for ER11 collets. Within variety of acceptable diameters (0.2 to 7 mm) 8MRLP80 is perfect for high precision laser turning applications, like: laser cutting, scribing, marking, stent cutting etc.
Rotary non-contact optical encoder as a feedback system guarantees direct control of position with nanoradian resolution. Naturally aged aluminum alloy guaranties high temperature stability, lightweight of 8MRL80 stage and excellent long period kinematics without drift of its performance. Compact crossed roller bearing provide perfect resistance to load in vertical direction. Rotary Stage of series 8MRL80 can be prepared for clean rooms and vacuum up to 10-3 torr with minor changes.
Precision of stage are tested in near to real working conditions while Standa provides measurement reports in both: disassembled and assembled (tested as a system) conditions.
Stages can be assembled to gimbal type configuration with outstanding axis intersection characteristic. Motion control of 8MRL80 series translation stages is available with Standa or ACS motion Controllers & Drivers.
Specifications
| Model |
8MRL80-6 |
| Kinematics & Feedback information |
| Angular Range, deg |
360 |
| Encoder Type |
Optical |
| Encoder Model |
LEN3 |
| Encoder Resolution 1), deg |
0.0000625 |
| Encoder Interface |
Differential RS422 |
| Internal Multiplier |
YES (optionally analog SIN/COS) |
| Multiplication factor |
200 |
| Encoder Grating Period, deg |
0.05 |
| Reference Mark (Index) |
Yes |
| Absolute Accuracy 2) |
| Before Calibration, µrad / arcsec |
±218 / ±45.00 |
| After Calibration, µrad / arcsec |
request |
| Uni-Directional Repeatability, µrad / arcsec |
N/A |
| Bi-Directional Repeatability (peak to peak) 2), µrad / arcsec |
±7.30 / ±1.50 |
| Bi-Directional Repeatability (RMS) 2), µrad / arcsec |
±2.90 / ±0.60 |
| Eccentricity 3), µm |
±10.00 |
| Wobble 3), µrad / arcsec |
request |
| Maximum Velocity (no load, @600VDC) 4), deg/s |
<6200 |
| Maximum Acceleration (no load) 5), deg/s2 / kRPM/s2 |
108000 / 18
|
| Maximum torque (continuous)5), Nm |
<0.27
|
| Maximum torque (peak)5), Nm |
<0.39
|
| Limits Switches |
N/A |
| Load, Guiding & Transmission Information |
| Design Type |
Torque Motor (Direct-Drive) Rotation Stage |
| Linear Motor Model |
TM 65.17N |
| Linear Motor Design Type |
Torque Motor |
| Maximum Bus Voltage, VDC |
>600 |
| Load Capacity (Centrally Placed) 6) |
| Horizontal, kg |
15 |
| Vertical, kg |
8 |
| Moving Mass 7), kg |
request |
| Guiding System |
Crossed roller bearings |
| Material & Environment Conditions |
| Housing Material |
Aluminum Alloy, Stainless Steel |
| Housing Coating (Finish) |
Black Anodizing |
| Environment Pressure |
Normal Atmosphere |
| Operating Temperature, °C |
+5…+30 |
| Control, Communication and Cabling |
| Recommended Controllers 8) |
ACS Products Line or 8SMC5-USB series |
| Recommended Drivers 8) |
ACS Products Line or 8SMC5-USB series |
| Recommended Power Supply 9) |
2 phase / 3 phase source |
| Recommended Communication Interface 11) |
EtherCAT / RS232 / USB / TCP-IP |
| Cable Length, m |
0,2 (other by request) |
| Differential Outputs 10) |
On request |
| Accessories Information |
| Ox, Oy Stack |
Through angle bracket |
| Additional Details |
| Dimensions of Moving Platform Ø, mm |
60 |
| Central Aperture Ø, mm |
5 |
| Overall Stage Dimensions (D x H), mm |
94 x 57,5(+4,5) |
| Measurement System |
Metric |
| RoHS |
Compliant |
| Weight, kg |
request |
1) System can be delivered with standard analog SIN/COS encoder interface for personal interpolation or with integrated external interpolator (up to x200).
2) Absolute accuracy & Bi-Directional Repeatability, Wobble measurements processed by 11D-ALI-COL electronic autocollimator. Stages can be assembled with additional precision Please contact Standa for more information.
3) Eccentricity is measured by Zygo Michelson interferometer.
4) Maximum Velocity is electrically limited by encoder and driver CUT-OF frequency (125kHz in analog interface; 50MHZ in RS422 digital interface); maximum velocity is also limited by bearing
5) Maximum Torque is limited by Drivers` Peak Current, Motors` Peak Current and External Load (inertia). Please contact Standa for explanation.
6) Load Capacity is limited by position of load and integrated guiding system. Please contact Standa for loading calculation.
7) Moving Mass is constant parameter of system which characterize m0 or inertia of unloaded system.
8) Recommended controllers & recommended drivers can be optimized for a certain application. Please contact Standa for recommendation.
9) Recommended power supply depends on required duty cycle and load. Please contact Standa for recommendation.
10) Differential Outputs are available in passive (buffered) or active (modulated) way with LCMv2.
11) Scalar Control can be implemented with USB/ TCP-IP / RS-232 communication interface; for vector control we recommend to use EtherCAT.
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