Page 48/60 H2B USER'S MANUAL - 550145G
2) BYPASS CONTACTOR
bypass The contactor connected to connector G3 ishandled as
bypass, with activation current =<80%Imax., output
current =<90%Imax., activation delay= 800 msec.
weakening cont. The contactor connected to connector G3 ishandled
as weakening, with activation current = 50% of the pro-
grammable output current (WEAK DROP OUT) from 10%
to 100% Imax. Activation delay=800 msec.
3) HOUR COUNTER
running Hour meter active only in running.
keyon Hour meter active with key
4) MAIN CONTACTOR
present The output G5 handles a main contactor.
running status The output G5 is active when the chopper is carrying
out any function (except descent).
6.1.3 Parameter modifications
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 chopper’s nonvolatile memory.
1) ACCELER.DELAY = Pump motor acceleration time
2) EV. ACCELER DELAY = Acceleration time relative to descent (proportional solenoid
valve).
3) DECELER DELAY = Deceleration time, i.e. to annul the voltage on the motor upon
release.
4) EV.DECELER DELAY = Deceleration time relative to descent.
5) AUXILIARY TIME = Not used in the pump configuration.
6) MAXIMUM CURRENT= Defines the maximum chopper current. All current adjustments
are expressed as a percentage of this value. The adjustment range is from 50% (level
0) to 100% (level 9).
7) HYD SPEED COARSE = Coarse hydrodrive speed (from 0 to 100% Vbatt on the
motor).
8) HYD SPEED FINE = Fine hydrodrive speed (a value from 0 to 10% Vbatt is added to
the coarse speed value). The speed is given by:
motor voltage = [(coarse speed) x 10 + (fine speed)] x Vbatt /100
The interval of values ranges from 0 to total conduction.
9) HYDRO COMPENS = Compensation in current for hydrodrive request.
10) CREEP SPEED = Defines the minimum value of voltage applied to the motor with
running request active. Allows a more immediate response at start up.
11) 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).
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