Parameters: 1-** Load And Motor - Danfoss VLT Refrigeration Drive FC 103 Programming Manual

Parameter Description

3.3 Parameters: 1-** Load and Motor

3.3.1 1-0* General Settings
Define whether the frequency converter operates in open
3 3 loop or closed loop.
1-00 Configuration Mode
Option:
[0] Speed
Open
Loop
[3] Process
Closed
Loop
1-03 Torque Characteristics
Option:
[0] Compressor
CT
*
[1] Condenser
VT
[2] Compressor
AEO CT
36
VLT
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
NOTICE
When set to [3] Closed Loop, the
commands reversing and start reversing do
not reverse the motor direction.
Motor speed is determined by applying a speed
reference or by setting the speed when in hand-
on mode.
Open loop is also used if the frequency converter
is part of a closed-loop control system based on
an external PID controller providing a speed
reference signal as output.
Motor speed is determined by a reference from
the built-in PID controller varying the motor
speed as in a closed-loop control process (for
example constant pressure or flow). Configure the
PID controller in parameter group 20-** Feedback
or via the Function Set-ups accessed by pressing
[Quick Menu].
Function:
For speed control of screw and scroll
compressors. Provides a voltage which is
optimized for a constant torque load charac-
teristic of the motor in the entire range down
to 10 Hz.
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.
For optimum energy-efficient 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
Danfoss A/S © 05/2016 All rights reserved.
®
Refrigeration Drive FC 103
1-03 Torque Characteristics
Option:
[3] Single fan/
pump AEO
VT
1-06 Clockwise Direction
Option:
[0] Normal The motor shaft turns in clockwise direction when
*
[1] Inverse Motor shaft turns in counterclockwise direction
Function:
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.
For optimum energy-efficient speed control
of centrifugal pumps and fans. Provides a
voltage optimized for a squared torque load
characteristic 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 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.
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.
the frequency converter is connected U⇒U, V⇒V,
and W⇒W to the motor.
when the frequency converter is connected U⇒U,
V⇒V, and W⇒W to the motor.
MG16H202