MACS

Overview

The Antenna Control System (PTS – 03) for mobile station is an intelligent and powerful antenna control system. This system is designed to track the VSAT antenna to the desired satellite.

Function

The function of the system is to control the antenna’s movement in azimuth, elevation and polarization to track satellites through various functional modes. It continuously monitors and displays axis angles, beacon signal strength, the functional mode selected, and the universal time and it indicates errors like limits & interlocks.

Application

The system offers various manual and auto-track modes for tracking purpose viz. standby Mode, manual mode, position track mode, POL position track, insat program track mode, acquire satellite mode and step track mode. It also enables the user to set the site related parameters through configuration option and add, delete and edit any number of satellites and advanced diagnostic features.

Features

DCU is a 19”, 4U high rack mountable Stand-alone unit, which operates 230V AC, 1Ø, 50Hz mains supply & 415V AC, 3Ø, 50Hz mains supply.
Absolute measuring system of Azimuth & Elevation axes angles through rotary encoders (13 Bit SSI) and Polarization axis angle through Potentiometer.
Interlock for both commands for axes to the same motor.
Protection through MCBs & contactors for AZ, EL & POL motors.
Motor reversal logic using SSRs for POL axis.
Self illuminated switches for commands at the DCU front panel.
Hard wired logic to disable commands upon the occurrence of Limits.
Reliable and easy mountable connectors at the rear panel of DCU.
Operated either Local mode or Remote mode.
Hardware limits monitoring.
User-friendly menu driven Software.
Front-end software written using Microsoft Visual C++ 6.0.
Supports operational modes viz. Manual mode, Position track mode, POL position track, Insat Program track mode, Acquire satellite mode & Step track mode.
It provides advanced diagnostics features to detect any faults and errors in the antenna control system
It allows the user to enter site related parameters and configure up to 10 numbers of satellites.
It will interact with Remote PC for M & C Operation through RS-422 / RS-232 serial communication Port.

System Specifications

Antenna Control System (PTS – 03)
1 Input Power Supply 230V AC, 1Ø, 50 Hz
2 Axes Supported Azimuth, Elevation and Polarization
3 Angle Measurement: AZ, EL & POL
  1. Sensors
  2. Range
  3. Resolution
  4. Accuracy
13 bit, SSI I/F Absolute Rotary Encoder for AZ & EL.
Potentiometer for Polarization.

Azimuth – 0 to 359.99°
Elevation – 0 to 359.99°
Polarization – 0 to 359.9°

Resolution:
±0.05° (AZ, EL), ±0.2° (POL)
Accuracy:
±0.1° (AZ, EL), ±0.5° (POL)
4 Axis Driving
  1. Output Commands
  2. Output Interface
  3. Speed Output
AZCW, AZCCW, ELUP, ELDOWN, POLCW, POLCCW
+24 V DC
0–10V DC (DAC output) separate for AZ and EL
5 Beacon Signal Input Voltage 0 to 10V DC from External BTR
6 Remote Computer Interface (M & C) RS-232 / RS-422 Serial Interface
7 Hardware Limits & Interlocks
  1. Limit Switch Inputs
  2. Input Interface
  3. System Interlock
  4. Other Interlocks
AZCW, AZCCW, ELUP, ELDOWN, POLCW, POLCCW
Potential free contact (NC)
Sense 24V DC supply
Encoder errors, emergency stop, drive errors
8 GUI Software & Configuration AZ, EL, POL angle display
UTC display
Beacon signal strength (digital & bar graph)
Status messages, software & hardware limits
Diagnostics, logs, alarms

Configuration menus for: Position Track, INSAT Program Track, Step Track, Acquire Satellite
9 Operational Modes Local Mode, Standby Mode, Manual Mode,
Position Track Mode, POL Position Track,
INSAT Program Track, Step Track, Acquire Satellite
10 Diagnostics Limit & interlock status
Encoder angles, beacon voltage
Power supply monitoring
Compass, GPS, inclinometer values
Fault & event logs
11 Size IPC: 19″ rack, 7U, 300 mm depth
DCU: 19″ rack, 4U, 550 mm depth
12 Environmental Operating temperature: up to 50°C
Storage temperature: −40°C to 85°C
Operating RH: 0–95% non-condensing

Specifications of IPC

# Parameter : Specification
1 Type of Processor : Intel Pentium IV based, 512 KB Cache, On-board HDD/FDD Interface, Programmable Watchdog Timer
2 RAM : 512 MB SDRAM – Provision for Expansion
3 Hard Disk Capacity : 80 GB
4 Drives : 3½” Floppy Drive, CD-ROM Drive
5 Type of Mount : 19” Rack Mountable, Industrial Grade PC System
6 Environmental : Should meet NEMA 4 or IP 65 standards
7 Display : 12” TFT LCD with built-in Membrane Keypad (63 Keys, including 20 Function Keys)
8 PCI Bus Slots : Provision for 2 JUKI 760 E PCI & ISA full-size interfaces
9 Ethernet Controller : 10/100 Mbps
10 Provision for : Disk-on-Chip Flash Disk
11 Power Supply : 250 W, 95–260V AC Industrial Grade Power Supply
12 Keyboard : External Standard Keyboard – 108 Keys (Additional)
13 Mouse : External Mouse – Logitech or Standard Company (Additional)
14 Serial Ports : Two Serial + Four USB Ports
15 Parallel Ports : One Parallel + One PS/2 Mouse Port (Clearly marked)
16 Operating System : Windows 2000 (Pre-loaded)