STP (Stationary Top Platform)

1. No Center Shaft to top platform.

(a) Signal cables don't wrap around a shaft even on units without slip rings.

(b) 540 degrees of azimuth rotation without the use of slip rings.

(c) More room inside the unit for larger slip ring housings if continuous rotation is

required. (Optional Slip Ring)

(d) Top platform can rotate if needed (see RTP specs)

2. Independent control of two elevation platforms. Platforms can be locked together via host command.

The STP unit is designed to keep the center top platform aligned with the base. This is useful for radar and similar type payloads. Unlike other manufactures the Burchfield STP unit has no center shaft through the unit. This eliminates the wrapping of the signal cables around the center shaft on units without slip rings. This design allows for 540 degrees of rotation in azimuth without the use of slip rings. It also allows room inside the unit for larger slip ring housings on units designed for continuous rotation.

General Specifications

Max Payload Elevation                      85lbs on each elevation arm.

Max Payload STP (center)                100 lbs

Azimuth Angular Range                     540 deg without slip rings

Azimuth Angular Range  (option)      Continuous rotation with slip rings

Elevation Angular Range                   360 deg

Independent Elevations                      Separate control or Locked together thru host

Max Velocity Azimuth                         60 deg/second

Max Velocity Elevations                     45 deg/second

Encoder Resolution Elevation          .000254 degrees

Encoder Resolution Azimuth            .000318 degrees

Continuous Torque Elevation           135 ft-lbs

Continuous Torque Azimuth             102 ft-lbs

Backlash                                            Zero Backlash Harmonic Drives^TM

Angular Accuracy                              Better than .01 deg

Angular Repeatability                       Better than .005 deg

Weight                                                65 lbs

IP Rating                                            IP67

Material                                              Aluminum Housing with Stainless Steel Fasteners

Temperature Range                         -40 to +85 deg C

Motors                                                Brushless Servo Motors

Communications

RS-232, RS-485, CAN, Ethernet,  Device Net

Power Requirements

24 to 48 VDC @ 5 amps

Payload Control inside Pan/Tilt

All internal electronics can be controlled and interrogated from host thru main communication channel. No need to pull separate communication lines for payloads.

3 RS-232 ports

3 RS-485 ports

20 I/O points can be assigned as Digital IN digital OUT or Analog IN

3 External Encoder inputs

Options

Stabilization (see Stabilization Module Specs.)

Click here to download specifications...