ALS130H Mechanical-Bearing Direct-Drive Linear Stage

Description

Design Features

  • Bidirectional repeatability to 75 nm
  • Direct-drive linear motor for ultra-precise motion
  • High-accuracy noncontact glass-scale linear encoder
  • Anti-cage-creep crossed-roller bearings for smooth motion
  • Outstanding performance in a small footprint
  • Linear servomotor for smooth motion

The ALS130H, with its sub-nanometer resolution, superior bidirectional repeatability and exceptional low-velocity performance, is the unparalleled solution for high performance test, measurement, inspection and other demanding applications.

Linear Motor Drive

Unlike many stages that utilize a side-drive lead screw, the ALS130H employs a center-driven, non-cogging linear motor as the driving element. Since the linear motor is a direct-drive device there is no backlash, windup or "stiction" that is normally associated with a lead screw or ball-screw drive.

The linear motor drive also offers the advantage of higher speeds and accelerations. The compact yet powerful linear motor drives the ALS130H to a peak unloaded acceleration of 1 g and a maximum velocity of 300 mm/s. The result is a high-performance stage with outstanding throughput that significantly outperforms comparable high-accuracy screw-driven stages.

Exceptional Resolution

For alignment applications, outstanding step-to-step resolution is critical. The ALS130H meets this demand with a resolution of 0.5 nm when coupled with Aerotech controls.

The direct-drive linear motor allows the ALS130H to make precise, small resolution steps. This is particularly important in alignment applications where step accuracy is critical. Furthermore, the linear motor and high resolution encoder system also provide excellent in-position stability.

Superior Geometry

Aerotech's ultra-stiff construction and compact two-piece design result in a stage with unmatched geometric tolerances. As a result, straightness and flatness for the standard stage is <±1 μm over the entire travel.

Smooth Travel

Designed for smooth, vibration-free motion, the ALS130H utilizes precision anti-cage-creep crossed-roller bearings for outstanding smoothness of motion. Since neither the bearing system nor the drive system utilize any recirculating elements, the ALS130H exhibits the outstanding ripple-free motion required for scanning and inspection applications.

Designed for Long Life

Like all stages in the Aerotech product family, the ALS130H was designed for outstanding long-term performance. Both the linear motor and linear encoder are noncontact devices - they not only exhibit long-life, but are totally maintenance free. A moving magnet track design eliminates the need for cable management, further improving long-term reliability.

Precision Alignment

ALS130H series stages are easily configured as XY assemblies. Options include precision orthogonality alignment to 5 arc seconds and available vertical axis solutions.

Specifications

ALS130H Specifications

ModelALS130H-025ALS130H-050ALS130H-100ALS130H-150
Travel 25 mm 50 mm 100 mm 150 mm
Drive System Linear Brushless Servomotor (BLMUC-95-A)
Bus Voltage Up to 80 VDC
Continuous Current Apk 2.94
Arms 2.08
Feedback Noncontact Linear Encoder
Resolution 0.5 nm - 1.0 µm
Maximum Travel Speed(1) 300 mm/s
Maximum Linear Acceleration 1 g (No Load)
Maximum Load(2) Horizontal 12.0 kg
Side 10.0 kg
Accuracy HALAR(3) ±0.3 µm
Standard ±1.0 µm ±1.0 µm ±2.0 µm ±3.0 µm
Repeatability Mean 75 nm
Peak to Peak ±100 nm
Straightness and Flatness Maximum Deviation ±1.0 µm ±1.0 µm ±1.5 µm ±2.0 µm
Pitch 5 arc sec 6 arc sec 8 arc sec 10 arc sec
Roll 5 arc sec 6 arc sec 8 arc sec 10 arc sec
Yaw 3 arc sec 3 arc sec 4 arc sec 5 arc sec
Nominal Stage Weight 3.0 kg 3.0 kg 3.8 kg 4.6 kg
Moving Mass 0.9 kg 1.1 kg 1.3 kg 1.6 kg
Construction Aluminum Body/Black Anodize Finish
  1. Maximum speed based on stage capability. Maximum application velocity may be limited by system data rate and system resolution.
  2. Maximum load based on bearing capability. Maximum application load may be limited by acceleration requirements.
  3. Available with Aerotech controllers.
  4. Specifications are for single-axis systems measured 25 mm above the tabletop. Performance of multi-axis systems is payload and workpoint dependent. Consult factory for multi-axis or non-standard applications.
  • ALS130Hspec1
  • ALS130Hspec2
  • ALS130Hspec3

Dimensions

  • ALS130H

Ordering Information

Ordering Example

ALS130H -100 - -NC

Ordering Options

Series Travel (mm) Options Limits
ALS130H -025
-050
-100
-150
-XYCMS -NC
-NO

ALS130H Series Linear Motor Stage

Option Description
ALS130H-025 25 mm (1 in) travel stage with linear motor, high-accuracy linear encoder with amplified sine output 1 Vpp (4 μm signal period), limits and single 25-pin connector (-25DU)
ALS130H-050 50 mm (2 in) travel stage with linear motor, high-accuracy linear encoder with amplified sine output 1 Vpp (4 μm signal period), limits and single 25-pin connector (-25DU)
ALS130H-100 100 mm (4 in) travel stage with linear motor, high-accuracy linear encoder with amplified sine output 1 Vpp (4 μm signal period), limits and single 25-pin connector (-25DU)
ALS130H-150 150 mm (6 in) travel stage with linear motor, high-accuracy linear encoder with amplified sine output 1 Vpp (4 μm signal period), limits and single 25-pin connector (-25DU)

Note: The amplified sine output linear encoder requires external multiplier. External signal multipliers available with A3200 amplifier products.

Note: -25DU single 25-pin connector not valid for systems using bus voltages greater than 80 V.

Options

Option Description
-XY-CMS Cable management system

Note: Not available with 25 mm travel stages. Order with lower axis stage.

Limits

Option Description
-NC Normally-closed end of travel limit switches (standard)
-NO Normally-open end of travel limit switches

Accessories (to be ordered as separate line item)

Option Description
HALAR High-accuracy system - linear error correction for accuracy and repeatability
ALIGNMENT-NPA Non-precision XY assembly
ALIGNMENT-PA10 XY assembly; 10 arc sec orthogonal
ALIGNMENT-PA5 XY assembly; 5 arc sec orthogonal