Braun RA200 service manual Introduction, Ramp Components

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Terminology

Introduction

The RA200 provides fully au- tomatic operation of all ramp functions. Basic ramp operation procedures are identical for all RA200 models. The operating instructions contained in this man- ual address the operator input switches and the corresponding ramp functions. Instructions are provided for manual operation of the ramp in the event of power or equipment failure.

Terminology: Become familiar with the terminology that will be used throughout this manual.

Become familiar with the iden- tification of RA200 components and their functions. Contact your ramp sales representative or call The Braun Corporation at 1-800- THE LIFT if any of this informa- tion is not fully understood.

Direction: The terms “left”, “right”, “front” and “rear” will be used throughout this manual to indicate direction (as viewed from the outside of the vehicle looking directly at the ramp’s front cover). Refer to the Ramp Terminology Illustrations for clarification to direction terms.

Ramp Components

Refer to the Ramp Terminology Illustrations and discriptions on pages 2 and 3.

Control Box (Electronic Con- troller): The remote mounted control box provides the logic to manage the inputs in order to produce the desired outputs in terms of ramp function and performance. In general terms of abilities and features, the control box is commonly referred to as the “controller.”

Ramp Cassette (Housing):

The ramp cassette is the metal structure (casing) mounted under the vehicle which contains and protects the platform and carriage assemblies. The cassette con- tains all ramp components except the control box when the ramp is in the stowed position.

Carriage Assembly: The car- riage assembly consists of the steel weldment that contains the four track rollers, the main rotation axle and the electric drive motors. The carriage assembly powers the platform assembly in and out of the housing during operation.

Platform Assembly: The plat- form assembly consists of the flat aluminum laminate upon which the wheelchair travels, the sensitivity edge, the supporting hinge, the associated skid pads, and pres- sure mat.

Cable-activated Manual Release System: A cable-activated man- ual release system disengages or “unlocks” the carriage assembly drive chains to allow the platform and carriage assemblies to be manually moved out (extended) or moved in (retracted), should it be necessary. Complete details and manual operating procedures are provided on page 10 and 11.

Ramp Actions and Functions

Extend: Extend is the action of the platform and carriage assem- bly moving out of the ramp cas- sette (housing).

Retract: Retract is the action of the platform and carriage assem- bly moving into the ramp cassette.

Deploy: Deploy is the action of the platform and carriage assem- bly extending and raising (elevat- ing) to floor level when the DE- PLOY (OUT) switch is activated.

Stow: Stow is the action of the platform and carriage assembly lowering to stow level, and fully retracting when the STOW (IN) switch is activated.

Stow Level: Stow level is the height at which the platform and carriage assembly extends and retracts.

Floor Level: Floor level is the height that the platform assembly raises (elevates) to in order for the wheelchair to enter or exit the vehicle.

Obstruction Sensing: An ob- struction sensing feature is stan- dard with the RA200. The control- ler monitors the instantaneous current of all the electric motors, and calculates a ‘real time’ run- ning average of the current. It then compares programmed peak (maximum vs. instantaneous) and delta (instantaneous minus run- ning average) limits to determine if an obstruction has been encoun- tered. The programmed limits for the different models of the RA200 are selected while configuring the controller during ramp installa- tion procedures (see Installation Instructions for detailed informa- tion).

Obstruction Force: The obstruc- tion force is the maximum allow- able force (pounds or Newtons) the ramp exerts on a object during a specific movement. There is a different force for each of the four movements (extend, retract, raise, lower). This force is a direct result of the obstruction sensing current limits, usually specified by the customer.

Note: Further details regarding ramp control switches and the corresponding ramp functions are provided in the Ramp Operating Instructions below and on page 8 and 9.

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Contents Ual Congratulations Contents ER1301WS Terminology Illustration TerminologyRamp Components IntroductionSafety Precautions RA200 Operation Safety Precautions Safety PrecautionsSafety Symbols Safety FIRST! Know That Installation and Service Safety Precautions Photo D Installation InstructionsPhoto C User Inputs/Outputs Controller to Vehicle Connections 929.505-3 Amp ConnectorOperation Operation Functionality Manual Operating Instructions Reengage Carriage Assembly by Drive ChainsTo Manually Raise or Lower Ramp Exterior Maintenance and Lubrication Maintenance, Lubrication & AdjustmentsPhoto a Photo BPhoto E Exterior AdjustmentsPhoto F Photo GPhoto J Photo K Photo HPhoto Photo M Photo N Photo LPhoto P Interior Maintenance and LubricationPhoto O Photo Q Interior AdjustmentsPhoto R Photo SPhoto U Photo TPhoto Y Photo WPhoto Z Inspection List Bottom Cover Sensor BottomLatches RA200Deployed Movement TroubleshootingRamp/controller will not Parts List ER1301WS Overall Exploded View Repair PartsExploded View ER1301WS Overall Exploded View ER1301WS Carriage & Ramp Assembly Parts List ER1301WS Carriage & Ramp Assembly Parts List ER1301WS Frame Assembly Exploded View ER1301WS Frame Assembly Exploded View ER1301WS Ramp Subassemblies Parts List ER1301WS Ramp Subassemblies Blank for Layout / Notes Electrical Schematic ER1301WS Ramp Caradap Controller 35A Providing Access to the World RA200 Transit Ramp