ACS 300 User’s Manual 53
Chapter 7 - Drive Parameters
AUTO BOOST
Automatic start current boost, which may be necessary in
drives with high starting torque. Automatic torque boost is
active only from 0 Hz to 20 Hz or until the reference speed is
reached. Torque boost is not activated if the output fre-
quency falls below 20 Hz while running. See also Page 2
parameter IR COMP.
FLY+BOOST
Activates both the Flying Start and Automatic Start Current
Boost.
STOP (FUNCTION)
COASTING
The ACS 300 stops supplying voltage when a Stop com-
mand is given and the motor coasts to a stop.
DEC RAMP
Ramp deceleration as set in Page 1 / Page 4 parameter
DEC 1 (or DEC 2) as selected by digital inputs in Standard
and Alternate
I/O mode, refer to page 26
and page 30
.
DC BRAKE
DC injection braking stops the motor by applying DC voltage
to the stator windings. By using DC braking, the motor can
be stopped in the shortest time possible, without using a
dynamic braking resistor.
DEC+BRAKE
This should be used only when a Braking Resistor (and with
frame size R2+Braking Chopper) is connected in order to
get the best result.
DEC+HOLD
Ramp deceleration as set in Page 1 / Page 4. After ramp DC
HOLD is set on for a period defined by parameter DC
BRAKE. Parameter DC HOLD defines the intensity of the
DC HOLD.
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