Danfoss VLT HVAC Drive FC 100 Series, Руководство по программированию, Страница: 34 / 122

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
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 adjustable frequency
drive 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 will be 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 group20-**.
NOTE!
This parameter cannot be changed when the motor is
running.
NOTE!
When set for Closed-Loop, the commands Reversing and
Start Reversing will not reverse the direction of the motor.
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 .
NOTE!
When running U/f control slip and load compen-
sations are not included.
[1] VVC+ Normal running mode, including slip and load
compensations.
NOTE!
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 adjustable frequency drive
1-03 Torque Characteristics
Option: Function:
(e.g., multiple condenser fans or cooling tower
fans). Provides a voltage which is optimized 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 optimized for a squared torque load
characteristic of the motor but in addition the
AEO feature will adapt the voltage exactly to the
current load situation, thereby reducing energy
consumption and audible noise from the motor.
1-06 Clockwise Direction
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.
Option: Function:
[0] Normal Motor shaft will turn in clockwise
direction when adjustable frequency
drive is connected U -> U; V -> V, and
W -> W to motor.
[1] Inverse Motor shaft will turn in counter-
clockwise direction when adjustable
frequency drive is connected U -> U; V
-> V, and W -> W to motor.
This parameter cannot be changed while the motor is
running.
3.2.2 1-10 - 1-13 Motor Selection
NOTE!
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
1-17 Voltage filter time const. x
Parameters
VLT
®
HVAC Basic Drive Programming Guide
3-6 MG18B222 - VLT
®
is a registered Danfoss trademark
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