Siemens RL-854 manual Theory of Operation, General

Page 17

RL-854 Radio Control Unit

 

Type I, Style A

Description

Intensity Control (contd.)

REILS

Adapt the Radio Control of REILS to the equipment and the needs of the airport. For one- or two-setting REIL systems, turn off the REILS at the lower intensity and leave powered at the higher intensity.

Approach Lights and Edge Lights

When a runway has approach lights that are Radio Controlled and edge lights that are not, the edge lights are left on at an intensity level selected according to the anticipated weather conditions during the hours of night operation. If the runway lights are Radio Controlled and the approach lights are not, then the approach lights may be left off or at a pre-selected brightness. The approach lights should never be on while the runway lights are off. On runways where the approach lights and runway lights are both radio-controlled, the intensities of both systems are increased or decreased simultaneously by the Radio Control.

Photocell Control

Theory of Operation

When the intensity of the lighting system is automatically controlled by a photocell or other means, the Radio Control powers the system. The intensity is selected automatically by the photocell.

This subsection describes the RL-854 Radio Control unit theory of operation.

General

The RL-854 has three major components: the mother printed circuit board (PCB), the Receiver PCB, and the Decoder PCB.

Main Assembly

See Figure 2. Power is supplied to the motherboard via terminal block TB1. Fuse F1 protects and switch S1 switches the power to the primary power of transformer T1. T1 has two 120 V ac primary windings that are operated in parallel.

 2001 Siemens Airfield Solutions, Incorporated

96A0027L

Page 12

All rights reserved

Issued 5/01

 

Page 16 Page 18
Image 17
Page 16 Page 18
Contents RL-854 Radio Control Type I, Style a Rev Description EC No Checked Approved Date Record of ChangesTable of Contents List of Figures Warranties Disclaimers RL-854 Radio Control Unit Type I, Style a Safety Safety SymbolsIntended Use Safety Symbols contd Qualified PersonnelOperation InstallationAction in the Event of a System or Component Malfunction Maintenance and RepairIntroduction DescriptionHeater Radio Controller Power Handling CapabilityIntroduction contd Options Main Assembly Equipment Specification DataCabinet ReceiverEquipment Specification Data Number Part Description Quantity Description Part NumberIntensity Control Radio Control RestrictionsInterfacing Radio Controller Clicks Intensity Control contdPeriods Microphone Clicks General Theory of OperationMain Assembly contd Interface Panel Interface Panel contd Automatic Radio Control Other L-821 Configurations Installation Unpacking Installing Standard RL-854Contd Tighten jam nuts against the hub to secure the radials Assembling AntennaAssembling Antenna Safety Precautions Installing AntennaMounting Antenna Installing RL-854PR Radio ControllerOperation Incremental Relay Option Installing RL-854PR Radio Controller contdDecoder PCB Startup Procedures Controls and IndicatorsIndicators ControlsStartup Procedures contd Startup Procedures contd Maintenance Introduction Switch Receiver Frequency SettingProblems and Possible Causes Solutions TroubleshootingParts Using the Illustrated Parts List Troubleshooting contdRL-854 Radio Control Unit Part Numbering System Description Part NumberHeater RL-854 Main Assembly Parts ListType RL-854 Motherboard Assembly Parts List RL-854 Main Assembly PartsRL-854 Motherboard Assembly Parts List contd DS1 RL-854 Control Board and Fuse Assembly Parts ListItem No Description Part Number Optional PartsRF Frequency Switch Settings for Frequency Control of Receiver PCBA-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 A-10 A-11 A-12 A-13 A-14 A-15 A-16
Top Page Image Contents