User's Manual
Table Of Contents
- KH1264 ISSUE 1
- CHAPTER 1
- CHAPTER 2
- CHAPTER 3
- CONTENTS
- ILLUSTRATIONS
- Figure 1 - Transceiver (DTX-A3): Module Locations 34
- Figure 2 - Drive Control Unit (GTX-A24): Module Locations 35
- Figure 3 X-band Upmast Transceiver (DTX-A3): Functional Diagram Figure 3 38
- Figure 4 X-band Upmast Transceiver (DTX-A3): Interconnection Diagram Figure 4 39
- Figure 5 - Drive Control Unit (GTX-A24): Block Diagram 319
- CHAPTER 4
- CONTENTS
- TABLES
- ILLUSTRATIONS
- Figure 1 - Transceiver (DTX-A3): Installation Dimensions 49
- Figure 2 - Transceiver (DTX-A3): Mast Mounting 410
- Figure 3 - Transceiver (DTX-A3): Fitting Kit 411
- Figure 4 - Suggested Antenna Lifting Arrangement 412
- Figure 5 - Drive Control Unit (GTX-A24): Installation Dimensions 413
- Figure 6 - Mains Isolator: Installation Dimensions 414
- Figure 7 - Transceiver (DTX-A3): Cableform Routing 419
- Figure 8 - Drive Control Unit (GTX-A24): Cableform Routing 420
- Figure 9 - Cable Gland: Assembly 421
- Figure 10 - Transceiver (DTX-A3): External Connections 423
- CHAPTER 5
- CHAPTER 6
- CONTENTS
- INTRODUCTION 63
- PLANNED MAINTENANCE 63
- DIAGNOSTIC MAINTENANCE 64
- CORRECTIVE MAINTENANCE 611
- TRANSCEIVER (DTX-A3) 612
- Access 612
- Removal of Rotating Joint (45-750-0034-001) 612
- Replacement of Rotating Joint (45-750-0034-001) 613
- Removal of Gearbox and Motor (55-100-0273-001) 613
- Replacement of Gearbox and Motor (55-100-0273-001) 613
- Removal of Azimuth Encoder (GTX-A188) 613
- Replacement of Azimuth Encoder (GTX-A188) 613
- Transceiver (DTX-A115) - Removal 614
- Transceiver (DTX-A115) - Replacement 614
- Power Supply (45-690-0062-002) and PSU Sense PCB (DTX-A121) - Removal 615
- Power Supply (45-690-0062-002) and PSU Sense PCB (DTX-A121) - Replacement 615
- CAN Adapter PCB (NNR-A981) - Removal 615
- CAN Adapter PCB (NNR-A981) - Replacement 615
- SharpEye Azimuth Interface PCB (DTX-A151) - Removal 616
- SharpEye Azimuth Interface PCB (DTX-A151) - Replacement 616
- DRIVE CONTROL UNIT (GTX-A24) 618
- CHECKS AFTER UNIT REPLACEMENT 620
- TRANSCEIVER (DTX-A3) 612
- ILLUSTRATIONS
- CONTENTS
- CHAPTER 7
- INSTALLATION AND SERVICE REPORTS
SYS TEM DE SCRIP TION
Transceiver
9 The transceiver electronics and the transceiver power supply are mounted in a cast
enclosure with one removable side cover, secured by seven captive bolts. The transceiver
electronics are contained in a unit mounted on the side of the enclosure and the power supply is
mounted on the base of the enclosure. The gearbox and motor are mounted on top of the
enclosure with the antenna secured to the top of the gearbox on a swing casting.
WARNING
THERE IS NO SAFETY SWITCH ON THE UPMAST TRANSCEIVER/TURNING
MECHANISM.
MAN ALOFT SAFETY IS PROVIDED BY AN ON/OFF KEYSWITCH ON THE
ASSOCIATED DRIVE CONTROL UNIT (FOR DETAILS SEE BELOW).
THE ON/OFF KEYSWITCH MUST BE SET TO OFF AND THE KEY REMOVED
BEFORE WORKING ON THE UPMAST TRANSCEIVER/TURNING
MECHANISM.
THE INVERTER IN THE DRIVE CONTROL UNIT MUST BE SET TO REMOTE
OPERATION DURING COMMISSIONING, OTHERWISE THE KEYSWITCH
FUNCTION WILL BE OVERRIDDEN.
10 The gearbox has a hollow output shaft through which the rotating joint (rojo) passes. The
output shaft also incorporates the mounting for the azimuth encoder, which provides
angular position information in the form of azimuth and heading line pulses.
11 The azimuth encoder provides azimuth and heading line pulses to the transceiver, which
uses the data internally. The azimuth and heading line pulses are also opto-isolated to
provide outputs to the display system. There are two sets of azimuth pulses in quadrature (each
set providing normal and inverse outputs with 1024 pulses per antenna revolution) and two
heading line pulses (normal and inverse outputs).
12 The motor and gearbox operate in conjunction with the Drive Control Unit to rotate the
antenna at speeds of up to 45 RPM in winds of up to 100 knots. The motor uses a variable
frequency 3-phase supply of 220 V between phases from the Drive Control Unit.
13 The Drive Control Unit uses the ship's single phase mains, which is fed via an inverter to
generate the 3-phase output. The frequency of the 3-phase output determines the antenna
rotation speed. The Drive Control Unit provides a 'soft start' by controlling the supply frequency
from 0 Hz to the operating frequency over a period of nominally 2 seconds.
KH1264
Chap ter 1
Page 1.4 Is sue 2