3.2 Main Menu - Load and Motor - Group 1
Parameters related to the motor nameplate load compen-
sations and application load type.
3.2.1 1-0* General Settings
1-00 Configuration Mode
Option:
Function:
[0]
*
Open
Loop
NOTICE
This parameter cannot be adjusted
when motor is running.
NOTICE
When set for Closed Loop, the commands
Reversing and Start Reversing do not
reverse the direction of the motor.
Motor speed is determined by applying a speed
reference or by setting desired speed when in
Hand Mode.
Open Loop is also used if the frequency converter
is part of a closed loop control system based on
an external PI controller providing a speed
reference signal as output.
[3]
Closed
Loop
Motor Speed is determined by a reference from
the built-in PI controller varying the motor speed
as of a closed loop control process (e.g. constant
pressure or flow). The PI controller must be
configured in parameter group
20-** Drive Closed
Loop
.
1-01 Motor Control Principle
Option:
Function:
[0]
U/f
Is used for parallel connected motors and/or special
motor applications. The U/f settings are set in
1-55 U/f Characteristic - U
and
1-56 U/f Characteristic -
F
.
NOTICE
When running U/f control slip and load
compensations are not included.
[1]
*
VVC+ Normal running mode, including slip- and load
compensations.
NOTICE
If 1-10 = [1] PM, only VVC+
option is available.
1-03 Torque Characteristics
Option:
Function:
[1]
*
Variable
Torque
For speed control of centrifugal pumps and fans.
Also to be used when controlling more than
one motor from the same frequency converter
(e.g. multiple condenser fans or cooling tower
fans). Provides a voltage which is optimised for
a squared torque load characteristic of the
motor.
[3]
Auto
Energy
Optim.
For optimum energy efficient speed control of
centrifugal pumps and fans. Provides a voltage
which is optimised for a squared torque load
characteristic of the motor but in addition the
AEO feature adapts the voltage exactly to the
current load situation, thereby reducing energy
consumption and audible noise from the motor.
1-06 Clockwise Direction
Option:
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
This parameter defines the term “Clockwise”
corresponding to the LCP direction arrow. Used for
easy change of direction of shaft rotation without
swapping motor wires.
[0]
*
Normal Motor shaft turns in clockwise direction when
frequency converter is connected U -> U; V -> V,
and W -> W to motor.
[1]
Inverse Motor shaft turns in counter-clockwise direction
when frequency converter is connected U -> U; V -
> V, and W -> W to motor.
3.2.2 1-10 to 1-13 Motor Selection
NOTICE
This parameter group cannot be
adjusted while the motor is running.
The following parameters are active ('x') depending on the
setting of
1-10 Motor Construction
1-10 Motor Construction
[0] Asynchron
[1] PM
Motor non
salient
1-00 Configuration Mode
x
x
1-03 Torque Characteristics
x
1-06 Clockwise Direction
x
x
1-14 Damping Gain
x
1-15 Low Speed Filter Time Const.
x
1-16 High Speed Filter Time Const.
x
Parameters
VLT
®
HVAC Basic Drive FC 101 Programming Guide
24
MG18B302 - Rev. 2013-09-02
3
3
Summary of Contents for VLT HVAC Basic Drive FC 101
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