ACS 300 User’s Manual
53
Chapter 7 - Drive Parameters
Note! The ACS 300 incorporates a controller that prevents over
current and overvoltage trips caused by too rapid acceleration
and deceleration settings for a given system, by slowing down the
acceleration/deceleration.
If a short time is entered for acceleration time in a system with
high inertia, the acceleration time will be limited by the I LIMIT
parameter. Conversely, if a short time is entered for deceleration
time in such a system, the deceleration time will be limited by the
DC link bus regulator. In some cases, the motor will take a long
time to come to a stop. If the system inertia is high, an
OVERVOLTAGE fault may occur if the deceleration time is too
short. The ACS 300 can deliver about 15 % braking torque
without an external braking resistor. If a short deceleration time is
critical to your system, we suggest you add a dynamic braking
resistor to your system. Brake Resistor is available as an option
for all frame sizes. Chopper is available as an option for frame
size R2.
If the reference signal changes at a slower rate than the
acceleration or deceleration time, the output frequency change
will follow the reference signal. If the reference signal changes
faster than the acceleration or deceleration time, the output
frequency change will be limited by the parameters.
FAULT MEMORY
The ACS 300 continuously monitors itself for faulty operation.
The last three faults are stored on Page 1 parameter FAULT
MEMORY. Refer to Chapter 8 Fault Tracing, page 77, for further
information on fault memory.
NOM RPM
Nominal motor rpm from the motor rating plate.
NOM FREQ
Nominal motor frequency from the motor rating plate (sometimes
called the field weakening point). The maximum output frequency
of the ACS 300 is determined according to the nominal motor
frequency:
50-100 Hz => f
max
= 200 Hz; 101-400 Hz => f
max
= 500 Hz
Summary of Contents for ACS 300
Page 14: ...xiv ACS 300 User s Manual Table of Contents ...
Page 24: ...10 ACS 300 User s Manual Chapter 1 Overview of This Manual ...
Page 28: ...14 ACS 300 User s Manual Chapter 2 Mechanical Installation ...
Page 50: ...36 ACS 300 User s Manual Chapter 4 Control Connections ...
Page 60: ...46 ACS 300 User s Manual Chapter 6 Control and Parameter Logic ...