GE Ecomagination AF-600 FP Programming Manual page 65

Parameter Description
3.6.2 H-3## Stop Speed
H-36 Trip Speed Low [RPM]
Range:
0 RPM [0 -
*
3 3
par.
F-17
RPM]
H-37 Trip Speed Low [Hz]
Range:
0 Hz [0 -
*
par.
F-15
Hz]
3.6.3 H-4# Advanced Settings
H-40 Configuration Mode
Option:
[0] Open
Loop
*
64
Function:
NOTICE
This parameter is only available if
parameter K-02 Motor Speed Unit is set
to [11] RPM.
Enter the low limit for the motor speed at
which the frequency converter trips. If the
value is 0, the function is not active. If the
speed at any time after the start (or during a
stop) drops below the value in the parameter,
the frequency converter trips with alarm 49,
Speed Limit.
Function:
NOTICE
This parameter is only available if
parameter K-02 Motor Speed Unit is set to
[1] Hz.
Enter the low limit for the motor speed at which
the frequency converter trips. If the value is 0,
the function is not active. If the speed at any
time after the start (or during a stop) drops
below the value in the parameter, the frequency
converter trips with alarm 49, Speed Limit.
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.
H-40 Configuration Mode
Option:
[3] Closed
Loop
H-43 Torque Characteristics
Option:
[0] Compressor
torque
[1] Variable
torque
*
[2] Energy
Savings CT
[3] Auto Energy
Optim. VT
03/2016 All rights reserved.
Function:
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 CL-## 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
optimised 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 optimised 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 optimised for a constant
torque load characteristic of the motor in the
entire range down to 15 Hz. In addition, the
Energy Saving 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 SP-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 auto tune function
can be carried out using parameter P-04 Auto
Tune. 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 optimised for a squared torque load
characteristic of the motor. In addition, the
Energy Saving 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 SP-43 Motor Cosphi. The parameter
DET-620D