Positioner System
AL-20-1MOD
The AL-20-1MOD is a compact and cost effective tracking pedestal for portable and fixed ground solution.
The positioner elevation over azimuth drive is based on a 24V DC brush motor integrated with a suitable gear train to achieve the required output velocity and the necessary torque to move up to 1m diameter antenna under the specified wind conditions.
Angular readout is implemented by rotary potentiometer utilizing the +5V DC reference to provide a voltage that is proportional to the angular position. Once the motor drive voltage is removed the azimuth axis is locked in its designated position. Clockwise and counter-clockwise limit switches stop the positioner motion once it has reached its specified sector limits either +185° or -185°.
The basic weight of the AL-20-1MOD is 12Kg
A mechanical Interface Control Drawing of the AL-20-1MOD is shown below
Specifications
| PARAMETERS | VALUES | |
|---|---|---|
|
ELEVATION |
AZIMUTH |
|
| Maximum Payload: (lbs) |
(100) |
|
| Delivered torque: (lb-ft.) |
(80) |
(80) |
| Peak velocity (deg/sec.) |
4 |
4 |
| Power gearing backlash (Single drive) |
0.15º |
|
| Data take-off accuracy |
±0.2º |
±0.2º |
| Limit-to-limit travel Azimuth (cable wrap) |
±185º |
|
| Limit-to-limit travel Elevation |
-5º to +15º |
|
| Motor type
Positioner weight |
DC 24V |
DC 24V |
|
UNITS |
VALUES |
|
| Temperature Range Operating |
°C |
-15 to +55 |
| Temperature Range Storage |
°C |
-20 to +65 |
| Relative humidity (including condensation) |
% |
Up to 100 |
| Rain |
mm/hr |
100 |
| Wind speed Operating |
(Km/h) |
(80) with gusts up to (90) |
| Wind speed Non-operating, Survival, Storage |
(Km/h) |
(160) |
| Altitude Operating |
Feet |
10,000 |
| Altitude Non-operating (Transport) |
Feet |
10,000 |
| Insects and fungi |
For tropical regions |
|
| Salt sea atmosphere, sand, dust, snow, solar radiation, vibration & shock |
According to outdoor, ground-fixed applications, |
|