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WARNING! Risk of Death or Serious Injury if the Maximum Recommended Limits are Exceeded
• Safety Lockouts and Limit Switches may only be adjusted by a Qualified Technician, and should
be set up to best meet the needs of the user without compromising the overall stability of the wheelchair.
WARNING! Risk of Serious Injury or Damage.
• Following any limit or lockout adjustments,
always
test the seating system over the full range of motion
(i.e.; tilt, recline, elevate, stand) to verify the revised set-up is functioning properly and ensure that
there are no resulting stability or interference issues.
WARNING! Risk of Serious Injury or Damage.
• ALWAYS ensure the wheelchair base is on a level surface when setting/adjusting safety limits.
4.0
4.0
ELECTRONICS
ELECTRONICS
4.3 Safety Lockouts and Limit Switches
4.3.2 ELEVATE/STAND REDUCED DRIVE SPEED (RDS) LIMIT
The Rovi-MPS system is configured to put the wheelchair into
Reduced Drive
Speed (RDS)
when the seating system begins ELEVATE or STAND function
is activated. The RDS Limit is controlled using a feedback actuator (electronic
limit) to trigger the MPS system into reduced drive speed as soon as the seating
system is raised (elevated or standing) beyond the home position
*
.
Front
Out of
Home
RDS Limit
(for Elevate/Stand)
Tilt DLO
(Angle measured from vertical)
Max. DLO = 30°
Front
Recline DLO
4.3.1 TILT/RECLINE DRIVE LOCKOUT (DLO)
AND
REDUCED DRIVE SPEED (RDS) LIMIT
Both the TILT and RECLINE functions are programmed with a
Drive Lockout (DLO
) Limit to prevent the
wheelchair from being driven when the seating system is Tilted and/or Reclined beyond a pre-determined safe
angle
*
. The DLO limit is configured using a programmable
Tipsy Angle Sensor
(see
section 4.3.4
).
Note:
The Tipsy Angle Sensor also allows programming of a
Reduce Drive Speed (RDS)
limit that will trigger
the wheelchair base to drive at approx. 25-30% of its maximum speed when the back angle extends beyond
a preset angle
*
(between the Home angle and the DLO angle)
. For the Rovi-MPS System, Reduced Drive
Speed is typically set to engage between 10-20° and will stop when the Drive Lockout limit/angle is reached)
Tilt and/or Recline Function (With Reduced Drive Speed):
Max. DLO Angle = 30°
Tilt and/or Recline Function (Without Reduced Drive Speed):
Max. DLO Angle = 25°
Max. DLO = 25°
(if No Reduced Drive)
ELEVATE FUNCTION: RDS Engaged when Elevate/Stand - ‘Out of Home’
*NOTE:
To regain full drive function of the wheelchair, return the seat angle to a more upright position
(when the Tilt/Recline DLO or RDS Limits are activated), or lower the seat to its home (fully retracted)
position (when the Elevate or Stand RDS Limit is activated).