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ALAR-XP SPECIFICATIONS

1. Resolution assumes -AS encoder with 2000x controller multiplication.

2. Certified with each stage. Requires the use of an Aerotech controller.

3. Repeatability and accuracy are dependent on encoder selection. To achieve the listed specifications, the electrical resolution should be 0.2 arc sec or smaller.

4. Maximum speed assumes a bus voltage of 320 VDC.

5. Digital RS422 encoder options will limit maximum speed below the listed value. Contact factory for specific stage and encoder speed combination.

Mechanical Specifications

ALAR250XP-M1

ALAR250XP-M2

ALAR325XP-M1

ALAR325XP-M2

Travel

Continuous (optional 340° max. limited travel)

Aperture

250 mm

325 mm

Resolution (Min. Incremental Motion)(1)

0.05 µrad (0.01 arc sec)

0.04 µrad (0.009 arc sec)

Accuracy(2)(3)

± 9.7 µrad (± 2 arc sec)

Bidirectional Repeatability(3)

± 2.4 µrad (± 0.5 arc sec)

Tilt-Error Motion

9.7 µrad (2.0 arc sec)

Maximum Speed(4,5)

180 rpm

100 rpm

Maximum Torque

548.6 N•m

731.5 N•m

833.0 N•m

1110.7 N•m

Continuous Torque

64.2 N•m

85.6 N•m

107.4 N•m

143.1 N•m

Axial Load

4950 N

5825 N

Radial Load

5200 N

6650 N

Moment Load

1825 N•m

2650 N•m

Shaft Inertia

0.89 kg•m2

1.71 kg•m2

Shaft Inertia with Limits

0.96 kg•m2

1.82 kg•m2

Stage Mass

100 kg

104 kg

125 kg

130 kg

Stage Mass with Limits

104 kg

108 kg

129 kg

134 kg

Electrical Specifications

ALAR250XP-M1

ALAR250XP-M2

ALAR325XP-M1

ALAR325XP-M2

Motor

Brushless Slotless

Continuous Current

Apk

11.2

14.9

11.3

15.1

Arms

7.9

10.6

8.0

10.7

Peak Current, Stall

Apk

95.7

127.6

87.8

117.1

Arms

67.7

90.2

62.1

82.8

Bus Voltage

Up to 340 VDC

Incremental Encoder Line Count

64,800 lines/rev

76,800 lines/rev

Limit Switches(1)

5 V, normally closed

1. Limited travel options only.