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4.3 "PARAMETER CHANGE" MENU
The following parameters are an example of a typical Parameter Change menu; some
of this parameters could be changed from customer requests.
The parameters with (p) symbol are related to the pump, those with (t) are related to
the traction motor.
1) ACCELERATION DELAY (t) = Sets the acceleration ramp.
2) FLD ACCELERATION (t) = Field acceleration ramp: is the time needed to lower the
field till to the weakened value, is a function of "Acceler. delay".
3) DECELERATION DELAY (t) = Sets the deceleration ramp according to the
accelerator potentiometer position.
4) RELEASE BRAKING (t) = Sets the deceleration ramp when the driving request is
released.
5) INVERS BRAKING (t) = Sets the deceleration ramp when is inverted the driving
direction.
6) CUTBACK SPEED 1 (t) = Speed reduction 1.
7) CUTBACK SPEED 2 (t) = Speed reduction 2.
8) MAX. SPEED FORW. (t) = Maximum Forward speed, obtained by weakening the
field current after reaching 100% conduction on the armature. With the parameter
set at level 0, the armature is in full conduction but the field current does not
decrease below the nominal value (low speed).
9) MAX SPEED BACK (t) = Maximum Reverse speed, obtained by weakening the
field current after reaching 100% conduction on the armature. With the parameter
set at level 0, the armature is in full conduction but the field current does not
decrease below the nominal value (low speed).
10) TRACTION I MAX (t) = Sets the maximum current of the Chopper (Armature).
11) ARMA NOM. CURR (t) = Nominal armature current. This parameter fixes a limit for
the armature current above which the field current is at least the nominal value
(FIELD NOM. CURR.), regardless of accelerator position.
12) WEAK DROPOUT (t)= This parameter fixes a limit on the armature current above
which the field current is increased linearly up to the nominal field current
(proportionally to the armature current).
13) FIELD CURR. MAX. (t) = Maximum field current. This parameter fixes the
maximum field current when the armature reaches the maximum value.
14) FIELD NOM. CURR. (t)= Nominal field current. This parameter fixes the minimum
field current when the accelerator is between 0% and 60% without full conduction
on the armature. Adjustment should be made with reference to the data on the
motor label. (The indication of Nominal Field Current).
15) CREEP SPEED (t)= Minimum speed. This parameter sets the minimum start
voltage applied to the motor.
16) SOFT WORKING (t) = Sets the entity of the acceleration and deceleration curves
with the Snail (H&S) function selected.
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