1-03 Torque Characteristics
Option: Function:
[0] Compressor
torque
For speed control of screw and
scroll compressors. Provides a
voltage which is optimized for a
constant torque load characteristic
of the motor in the entire range
down to 10 Hz.
[1] Variable
torque
For speed control of centrifugal
pumps and fans. Also to be used
when controlling more than 1
motor from the same frequency
converter (for example, multiple
condenser fans or cooling tower
fans). Provides a voltage which is
optimized for a squared torque load
characteristic of the motor.
[2] Auto Energy
Optim. CT
For optimum energy-ecient speed
control of screw and scroll
compressors. Provides a voltage
which is optimized for a constant
torque load characteristic of the
motor in the entire range down to
15 Hz. In addition, the AEO feature
adapts the voltage exactly to the
current load situation, thereby
reducing energy consumption and
audible noise from the motor. To
obtain optimum performance, set
the motor power factor cos phi
correctly. This value is set in
parameter 14-43 Motor Cosphi. The
parameter has a default value
which is automatically adjusted
when the motor data is
programmed. These settings ensure
optimum motor voltage. If the
motor power factor cos phi requires
tuning, an AMA function can be
carried out using
parameter 1-29 Automatic Motor
Adaptation (AMA). It is rarely
necessary to adjust the motor
power factor parameter manually.
[3] * Auto Energy
Optim. VT
For optimum energy-ecient speed
control of centrifugal pumps and
fans. Provides a voltage optimized
for a squared torque load charac-
teristic of the motor. In addition,
the AEO feature adapts the voltage
exactly to the current load
situation, thereby reducing energy
consumption and audible noise
from the motor. To obtain optimum
performance, set the motor power
1-03 Torque Characteristics
Option: Function:
factor cos phi correctly. This value is
set in parameter 14-43 Motor Cosphi.
The parameter has a default value
and is automatically adjusted when
the motor data is programmed.
These settings ensure optimum
motor voltage. If the motor power
factor cos phi requires tuning, an
AMA function can be carried out
using parameter 1-29 Automatic
Motor Adaptation (AMA). It is rarely
necessary to adjust the motor
power factor parameter manually.
1-06 Clockwise Direction
Option: Function:
NOTICE
This parameter cannot be
adjusted while the motor is
running.
This parameter denes the term
clockwise corresponding to the LCP
direction arrow. Used for easy
change of direction of shaft
rotation without swapping motor
wires.
[0] * Normal The motor shaft turns in clockwise
direction when the frequency
converter is connected U⇒U, V⇒V,
and W⇒W to the motor.
[1] Inverse Motor shaft turns in counter-
clockwise direction when the
frequency converter is connected
U⇒U, V⇒V, and W⇒W to the motor.
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