Elevation-over-Azimuth Positioners

Azimuth over Elevation Positioners
Model: MEC-EA

Our elevation-over-azimuth positioners support loads up to 68,039 kg (150,000 lb) and are equipped standard with brushless servo motors, high efficiency powertrain components, absolute position feedback, and user adjustable hardware limits. A broad selection of performance, convenience, and protection options enable you to configure the positioner for your specific application.

Features
  • Bending moment up to 305,059 Nm (225,000 ft-lb)
  • Precision native accuracy and construction
  • Industry leading power-density vs. size
  • Payloads up to 68,039 kg (150,000 lb)
  • Superior reliability & longevity
  • Standardized add-on options
  • Durable marine-grade finish
  • All-weather design


Datasheet
  • Specifications
  • Applications
  • Standard Components
  • Available Add-Ons
Light duty
Axial Load Capacity 136 – 1,361 kg (300 – 3,000 lb)
Elevation Withstand Torque 407 – 5,084 Nm (300 – 3,750 ft-lb)
Medium duty
Axial Load Capacity 5,443 – 13,608 kg (12,000 – 30,000 lb)
Elevation Withstand Torque 12,202 – 40,675 Nm (9,000 – 30,000 ft-lb)
Heavy duty
Axial Load Capacity 18,144 – 68,039 kg (40,000 – 150,000 lb)
Elevation Withstand Torque 54,911 – 305,059 Nm (40,500 – 225,000 ft-lb)
  • MEC-EA Elevation over Azimuth Positioners
  • Instruction Manual
  • Maintenance Manual
  • Interface Control Drawing (ICD)

Factory Installed Options

Position Feedback Option
  • PF1: Off-Axis Absolute Encoder
    • Standard absolute feedback with Encoder
  • PF3: High Accuracy, ±0.005 degrees native read-out accuracy for most positioners
    • Replaces standard absolute feedback with center-drive high accuracy absolute encoder Options are available, to further enhance the native accuracy using error correction techniques. See Enhanced Accuracy Options brochure for additional information.

Limit Switch Options
  • LS0: No Limits, Continuous Rotation
  • LS1: Restricted Rotation up to ±200 degrees (adjustable)

RF Path Option
  • RJ Rotary Joint (Continuous Rotation)
    • Adds a single channel RF path inside the positioner supporting continuous, unrestricted rotation of the axis. The factory installed kit contains RF rotary joint and internal RF cabling.
  • RF Path (Restricted Rotation)
    • Adds a single channel RF path inside the positioner with restricted travel of the positioner up to a ±200 degree travel range. The factory installed kit contains internal RF cabling.

Electrical Path Option
  • CRU (Continuous Rotation for Upper-Axes)
    • Adds an electrical path inside the positioner supporting continuous unrestricted rotation of the upper motorized axis. The factory installed kit includes an internal electrical slip-ring assembly and internal wiring.
  • CRT (Continuous Rotation for Thru-Contacts)
    • Adds an electrical path inside the positioner supporting continuous unrestricted rotation for dedicated thru-contacts. The factory installed kit contains an internal electrical slip-ring assembly and internal wiring.
  • RRT (Restricted Rotation for Thru-Contacts)
    • Adds an electrical path inside the positioner supporting restricted rotation up to ±200 degrees for dedicated thru-contacts. The factory installed kit contains an internal wiring harness, cap and chain protectors.

Convenience & Protection Options

Stow-Pin
 Adds manual stow-pin and mating receptacle to protect the positioner’s drive-train in susceptible environments such as high wind-gust exposure in outdoor environments and high-load pick-up mode applications. Includes electrical interlock circuit for disabling the servo system when stow-pin is inserted. Default position is zero (0) degrees. Alternate stow-pin angle locations are available upon request (zero degrees standard).

Riser
Adds a structural riser below the positioner. Risers are designed to withstand the full capacity of the mated positioner and are tailored to your required height.

Counterweight
Adds counter-balancing weight to the elevation axis to improve capacity, dynamic performance, and efficiency. The counter-balancing weights can be added or removed to meet user requirements.