t
New features include:
DIncr
eased Low Speed T
orque.
The parameter P71 – [IR Compensation]
was
added, allowing adjustment of the amount of
IR compensation desired. This is used to
compensate for stator resistance and allows
much higher levels of starting torque. The
default level of P38 – [Boost Select]
has
changed.
DImproved Acceleration.
The acceleration current ramp regulator has
been retuned and the current feedback filter
time constant was reduced, allowing improved
performance with short acceleration times
under all load conditions. The drive power-up
diagnostics were also shortened considerably
,
which improves response time to a START
signal.
DImproved Current Sensing
The current sense accuracy has been improved
for low speeds and light loads. Capacitive
current cancellation has been added to
eliminate errors due to long shielded cables.
DRobust Current Limit.
A fast frequency foldback was added to
operate with the hardware current limit. This
allows the drive to continue operating under
adverse conditions.
DImproved Speed Regulation.
The parameter P72 – [Slip Compensation]
was added, which compensates for inherent
slip in an induction motor
. This assists in
maintaining a constant motor shaft speed
under heavy loading conditions.
DConfigurable Terminal Block Input
The parameter P46 – [Input Mode]
has been
expanded to provide greater flexibility
. New
input modes include the ability to select
secondary accel/decel times, switch between
local and remote control or enable/disable of
the controller.
DImproved Drive Functionality.
The “DC Injection Braking” setting for P34 –
[Stop Mode Select] has been improved by
incorporating a current limit function. In
addition, the delay time before applying
voltage has been eliminated.
The parameter P44 – [DC Hold Time]
is now
settable up to 25 seconds in 0.1 second
increments and
P37 – [Maximum Voltage]
is
now settable to 1
10% of the drive rating.
DImproved Analog Input Operation.
The input range and scaling of the analog
inputs has been improved. Refer to P60 –
[Zero Offset], P74 – [Analog Select],
P75 – [Analog Input Minimum]
, and
P76 – [Analog Input Maximum].
DEnhanced Frequency Selection.
P58 – [Internal Frequency] is now controlled
in real time. This means that the output
frequency will change while the parameter is
being adjusted. Pressing the ENTER key will
retain the new frequency
. Pressing the ESCape
key will cause the drive to accel/decel back to
the previous setting.
In addition, P58 – [Internal Frequency]
and
P59 – [Frequency Select] are now available
in both the Preset Speed model and the
Analog Signal Follower model.
