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5.1.3 Parameter modification (PROGRAM MENU)
The parameters can be modified with the chopper in standby or running.
In the latter case, you must return to standby before switching off the chopper so that
the modifications are stored in the nonvolatile memory.
Regenerative traction parameters.
1) ACCELER DELAY = acceleration time, i.e. the minimum time during which the
motor voltage varies from 0V to the maximum.
2) INVERS BRAKING = basic braking current in direction inversion. A value is added
to this value based on the accelerator plus a fixed increment every second.
3) RELEASE BRAKING = release braking current (should have the lowest value).
4) PEDAL BRAKING = release braking current with brake pedal pressed.
5) CUTBACK SP.1 = reduction of speed no.1 (relative to input E3). A braking is also
associated (curve braking); the accelerator is reduced.
6) CUTBACK SP.2 = reduction of speed no.2 associated to input E2.
If the pin E2 input option is configured in the backing way , this parameter defines
the backing speed whose adjustment values are defined at the point "BACKING
SPEED" of the adjustment chart.
7) CUTBACK SP.3 = reduction of speed no.3 associated to input E1.
8) AUXILIARY TIME = Auxiliary contactor activating time connected to the G7 output
(request option or hardware modifications are necessary, see p.18)
9) COMPENSATION = compensation of the speed (motor voltage) on the basis of the
current when the speed reductions are active.
10) BRAKING MODULATION = defines the maximum current in inversion braking with
the acelerator pedal pressed. When the accelerator is pressed all the way down in
inversion, braking becomes more brusque the higher the value of the parameter.
11) IMAX = defines the maximum current of the chopper both when running and in
braking. All the current adjustments are expressed as a percentage of this value.
The adjustment interval is from 50% (level 0) to 100% (level 9).
12) MAX SPEED FORW = Max speed wit forward direction on. This speed reduction
goes under adjustable compensation with the COMPENSATION parameter.
13) MAX SPEED BACK = Max speed wit backward direction on. This speed reduction
goes under adjustable compensation with the COMPENSATION parameter.
14) CREEP SPEED = defines the minimum voltage applied to the motor with the run-
ning request activated. Provides a more immediate response in starting off.
15) WEAK DROPOUT = threshold of current for opening the weakening contactor (if
programmed as such and not as bypass, in which case the output threshold is fixed
and not programmable).
16) CURVE BRAKING = current for curve braking, activated with RV1 request, if the
PWM is greater than 80% and the motor current less than 40%Imax.
17) CURVE TIME = curve braking time associated to RV1. If 0, braking is not carried
out.
18) BACKING TIME = backing request activating time delay. If programmed at level 9
there is no time delay and the on status is present if a request is present.
H2B regenerative traction
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