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Page 3
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.
Terminology