Siemens RL-854 Introduction contd Options, Radio Controller Power Handling Capability, Heater

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RL-854 Radio Control Unit

 

Type I, Style A

Description

Introduction (contd.)

Options

The Radio Control has three output relays operated by keying the transmitter in specific sequences. To power these relays, pilots can set their communications transmitters to the frequency to which the RL-854 is tuned.

Three clicks of the mike button within five seconds powers the lighting system on the low brightness setting. Five clicks of the mike button within five seconds powers the lighting system on the medium brightness setting. Seven clicks of the mike button within five seconds powers the lighting system on the high brightness setting. The RL-854 Radio Control can be field programmed for three, five, and seven clicks to change the light settings.

The contacts of the relays in the RL-854 are for control purposes only. They are rated 10 amps (inductive) and are capable of operating the coils or power relays. They are not intended to switch lighting-load currents.

Two options are available for the RL-854 Radio Control Unit: radio controller power handling capability and heater.

Radio Controller Power Handling Capability

An option is available to provide for power handling capability in the Radio Controller, changing the designation to RL-854PR. It adds three 2-pole relays with contact ratings of 25 amps per pole. These power relays are powered by the control relays. Contacts of the power relays are terminated in a terminal block.

The entire Radio Controller is completely solid state and has no moving parts other than the relays.

Heater

A heater is available as an option for the RL-854 Radio Control Unit. Thermostat TH1 in the unit is used to supply the heater with 120 Vac when the outside air temperature drops below 0 °F. This prevents the receiver PCB from freezing.

 2001 Siemens Airfield Solutions, Incorporated

96A0027L

Page 6

All rights reserved

Issued 5/01

 

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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 Receiver Equipment Specification DataMain Assembly CabinetEquipment 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 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 SystemHeater 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
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