Summary of Changes
BULLETIN 1305 PERFORMANCE ENHANCEMENTS
New features in Firmware Revision 6.01 include:
D Increased Low Speed Torque.
The parameter [IR Comp %] 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 levels of [Start
Boost] and operation of the [Compensation] parameter
have changed. The default setting for [Compensation] is
now “Comp” and functions from 1.1 to 120 Hertz.
D Improved 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. The parameter
[Adaptive I Lim] was also added for very quick
accelerations with low system inertias.
D Robust Current Limit.
A fast frequency foldback was added to operate with the
lower hardware current limit. This allows the drive to
continue operating under adverse conditions.
D Improved Speed Regulation.
The parameter [Rated Slip] was added, which compensates
for inherent slip in an induction motor. This assists in
maintaining an induction motor shaft frequency under
heavy loading conditions. The actual frequency value added
may be viewed in [Slip Comp Adder].
D Reduced Voltage Ring-up.
Voltage Ring-up Reduction Software is enabled when
[Cable Length] = “Long”. This software attempts to limit
voltage ring-up.
D Improved Drive Functionality.
The [Analog Filter] parameter was added. This allows
selection of the amount of software filtering applied to the
0-10 Volt and Potentiometer inputs in 25% increments. The
lower the percentage, the less filtering applied.
The Stop Mode “DC Brake” has been greatly improved by
incorporating a current limit function into this stopping
mode.
The parameter [DC Hold Time] is now settable up to 150
seconds in 0.1 second increments and [Maximum Voltage]
is now settable to 110% of the drive rating. Several
additional parameters now have new factory default values.
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