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40
Curtis enAble
®
40 Manual,
Rev. E
STEP
7. Return to the Motor Test parameter and turn it Off.
STEP
8. To set the controller to automatically compensate for motor
resistance changes due to motor temperature, turn the Motor R
Measure parameter On. Set the Motor Test Current parameter
to 25%. Drive the chair. If the ride is more jumpy than before,
increase the Motor Test Current until the chair drives normally.
The controller will now accurately detect a hot motor and com-
pensate for changes in motor resistance.
6
Trim the Chair
Trimming the chair ensures that it truly runs straight forward when it is com-
manded to so; see page 4. There are two ways to do this: the easiest way (Steps
1–3), and the fastest way (Steps 4–7). Use whichever technique you prefer.
The programmable parameters that are adjusted in Procedure
6
are located
in the Program
»
Motors & Brakes menu.
STEP
1. The easiest way to trim the chair is to let the Auto-Trim feature
do it for you. Turn the Auto-Trim parameter On.
STEP
2. Drive the chair forward as straight as possible for at least 20 sec-
onds, release the joystick, and let the chair come to a complete
stop with the EM brakes set.
STEP
3. Repeat Step 2 for five or ten minutes, and the chair will be
trimmed for you by the Auto-Trim feature.
STEP
4. The fastest way to trim the chair is to do it manually. Turn the
Auto-Trim parameter Off.
STEP
5. Drive the chair straight ahead briefly and then release the joy-
stick. Note whether the chair veers when stopping or requires
the joystick to be off center to drive straight.
STEP
6. If the chair is not tracking properly, adjust the Motor Trim param-
eter up or down to correct it. After you’ve had some experience
doing this, you will probably develop a feel for this adjustment
and be able to do it quite quickly.
STEP
7. When the chair is tracking properly, turn the Auto-Trim pa-
rameter On so that any further trim adjustments will be done
automatically.
7
Set Up MyChair
This guide tunes only Profile 1. To tune Profile 2, repeat all the Drive and Steer
procedures (
9
through
bn
), using the Profile 1 settings as a starting point.
STEP
1. Set the MyChair parameter to 1.0, which is Profile 1. Later, after
Profile 2 has also been defined, MyChair can be set to Profile 1,
to Profile 2, or to a point between; see page 3.
7 — TUNING GUIDE
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