Siemens RL-854 manual Interface Panel

Page 19

RL-854 Radio Control Unit
Type I, Style A	Description

Main Assembly (contd.)

The secondary power source for T1 is 25.2 V ac, center-tapped. This voltage is applied to the Decoder PCB, which contains a full-wave rectifier. Capacitor C1 provides the filtering for the rectifier via connector J2 pin 9, which is 17.5 V dc and acts as the DC source for relays and lamps. All relays have a 62-Ωresistor in series with their coil to drop the coil voltage to 12 V dc.

Interface Panel

See Figure 3. The RL-854 Interface panel is used to interface an air-to- ground Radio Control unit with an L-821 control panel and L-828 constant current regulator (CCR). The CCR control voltage can be either +48 V dc or 120 V ac.

 2001 Siemens Airfield Solutions, Incorporated	96A0027L	Page 14
All rights reserved	Issued 5/01

Image 19

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 DescriptionIntroduction contd Options Radio Controller Power Handling CapabilityHeater Receiver Equipment Specification DataMain Assembly CabinetEquipment Specification Data Number Part Description Quantity Description Part NumberInterfacing Radio Controller Radio Control RestrictionsIntensity Control Periods Microphone Clicks Intensity Control contdClicks 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 Controls Controls and IndicatorsStartup Procedures IndicatorsStartup Procedures contd Startup Procedures contd Maintenance Introduction Switch Receiver Frequency SettingProblems and Possible Causes Solutions TroubleshootingDescription Part Number Troubleshooting contdParts Using the Illustrated Parts List RL-854 Radio Control Unit Part Numbering SystemType RL-854 Main Assembly Parts ListHeater 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