12
Q9 Plus ASD Installation and Operation Manual
Q9 Plus ASD Characteristics
Over-Current Protection
Each
Q9 Plus ASD
model is designed for a specified operating power range. The Q9 Plus ASD will incur
a trip if the design specifications are exceeded.
However, the
Q9 Plus ASD
may be operated at 110% of the specified output-current range for a limited
amount of time as indicated in the section titled
Voltage/Current Specifications on pg. 264
. Also, the
Stall
Prevention Level
(see
F601
) may be adjusted to help with nuisance over-current trips.
When using the
Q9 Plus ASD
for an application that controls a motor which is rated significantly less
than the maximum current rating of the Q9 Plus ASD, the over-current limit setting will have to be
changed to match the application. See
Motor Overload Protection Level 1
for further information on this
ASD/motor configuration.
ASD Capacity
The
Q9 Plus ASD
must not be used with a motor that has a significantly larger capacity, even if the motor
is operated under a small load. A Q9 Plus ASD being used in this way will be susceptible to a high-output
peak current which may result in nuisance tripping.
Do not apply a level of input voltage to a
Q9 Plus ASD
that is beyond that which the Q9 Plus ASD is
rated. The input voltage may be stepped down when required with the use of a step-down transformer or
some other type of voltage reduction system.
Using Vector Control
Using
Vector Control
enables the system to produce very high torque over the entire operating range
even at extremely low speeds.
Vector Control
may be used with or without feedback. However, using
feedback increases the speed accuracy for applications requiring precise speed control. Enabling the
Automatic Energy Savings
further increases the efficiency of the
Q9 Plus ASD
while maintaining its
robust performance.
Vector Control
is not capable of operating multiple motors connected in parallel.
See
V/f Pattern on pg. 87
for further information on using
Vector Control
.
Hand/Auto Operation
While running in the
Hand
mode at a non-zero speed, if the RJ45 connector is removed from the EOI, the
Q9 Plus ASD
remains in the
Hand
mode running at the last commanded speed even though the
Hand
LED is off. The Q9 Plus ASD output remains at the frequency of the
Frequency Command
field at the
time of the disconnect for the duration of the disconnect.
To prevent this condition, before disconnecting the RJ45 connector, ensure that the
Q9 Plus ASD
is off.
CAUTION
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