User guide

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> Rotary Positioners

EL/AZ Positioners – Medium Duty

AL- 4271-1

•

AL- 4272-1

•

AL- 4273-1

•

AL- 4274-1

•

AL- 4275-1

•

AL- 4275-1SP

MEDIUM DUTY

➊ APPLICATIONS

• General Purpose Positioning

Subsystems

• Far-Field & Near-Field Antenna

Measurements

• Indoor & Outdoor Use

➋ PRODUCT HIGHTLIGHTS

• Broad Selection – 6 Models

• Vertical Loads Ranging from

1,000 to 10,000 lbs (450 to 4,540 kg)

• Platform Sizes Ranging from

12.6 x 13.3 in to 28 x 28 in

(320 x 339 mm to 711 x 711 mm)

• Excellent Angular Position Accuracy

• Low Backlash Design

• Precision Bearings

• Closed Loop Servo Control

• Industry-Standard Wiring

• Tachometers for Optimum Speed

Regulation & Control

• Wide Operating Temperature Range:

- 4° F to 140° F (- 20° C to 60° C)

• Fully Enclosed Design of Drive Gear

Train & Data Take-Off

• Wide Variety of Available Options

Our Legacy Series EL/AZ positioners provide accurate

rotation, velocity, and direction for customers involved

in antenna design and development.

Their rugged yet simple construction ensures maximum

reliability and trouble-free operation, yielding the best

size and weight versus performance ratio.

Typically, the primary components include the body, precise slew bearings, DC motors, gear reducers,

synchro assemblies, and limit switch assemblies. The turntable surface is designed with a threaded

mounting hole pattern for customer use. A Safe/Operate switch is included to ensure the safety

of working personnel.

AL-4272-1

LEGACY SERIES EL/AZ

Summary of content (4 pages)

PAGE 1
LEGACY SERIES EL/AZ MEDIUM DUTY > EL/AZ Positioners – Medium Duty AL- 4271-1 • AL- 4272-1 • AL- 4273-1 • AL- 4274-1 • AL- 4275-1 • AL- 4275-1SP ➊ APPLICATIONS • General Purpose Positioning Subsystems • Far-Field & Near-Field Antenna Measurements • Indoor & Outdoor Use ➋ PRODUCT HIGHTLIGHTS Our Legacy Series EL/AZ positioners provide accurate rotation, velocity, and direction for customers involved in antenna design and development.
PAGE 2
Speciﬁcations - Legacy Series EL/AZ Positioners Medium Duty Positioner Model Parameter Units AL- 4271-1 AL- 4272-1 AL- 4273-1 AL- 4274-1 AL- 4275-1 AL- 4275-1SP Outline Dimension Drawing Number 10-0445 09-1220 10-1936 10-1822 10-1823 19-6292 Technical Notes 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 ft-lbs 600 2,000 4,200 7,500 12,000 12,000 kg-m 80 280 580 1,040 1,660 1,660 lbs 1,000 1,250 3,000 5,000 10,000 10,000 kg 450 570 1,360 2,270 4,540 4,540 ft
PAGE 3
Positioner Model Parameter Units AL- 4271-1 AL- 4272-1 AL- 4273-1 AL- 4274-1 AL- 4275-1 AL- 4275-1SP Opt Opt Opt Opt Opt Opt Incremental Encoder (Standard Accuracy) EN001 Accuracy – Azimuth deg ± 0.03 ± 0.03 ± 0.03 ± 0.03 ± 0.03 ± 0.03 Accuracy – Elevation deg ± 0.03 ± 0.03 ± 0.03 ± 0.03 ± 0.03 ± 0.03 Opt Opt Opt Opt Opt Opt Direct Incremental Encoder (High Accuracy) EN002 Accuracy – Azimuth deg ± 0.005 ± 0.005 ± 0.005 ± 0.005 ± 0.005 ± 0.
PAGE 4
supplied accessories > CD-ROM Documentation Set: User Manual (Installation, Setup, Operation & Maintenance) technical notes 1 All accuracy data is based on no-load conditions. Contact ORBIT/FR for accuracy under load conditions. 2 All models are equipped with adjustable limit switches capable of approx 20° to 900° total travel. When rotary joint and slip ring options are speciﬁed, limit switches remain but are electrically disabled.