Danfoss VLT AutomationDrive FC 302 Programming Manual page 152

Parameter Descriptions
function along with an external electro-mechanical brake
attached to the application.
14-30 Current Lim Ctrl, Proportional Gain
Range:
100 % [0 - 500 %] Enter the proportional gain value for the
*
3 3
14-31 Current Lim Ctrl, Integration Time
Range:
Size related
*
14-32 Current Lim Ctrl, Filter Time
Range:
Size
related 100 ms]
*
14-35 Stall Protection
Option:
[0] Disabled Disables stall protection in fieldweakening Flux
[1] Enabled Enables stall protection in fieldweakening Flux
*
14-36 Fieldweakening Function
Select the fieldweakening function mode in Flux mode.
Range:
0 [Auto] In this mode, the frequency converter calculates the
*
optimal torque output.
Measured DC link voltage determines the phase-to-
phase motor voltage. Magnetising reference is
based on the actual voltage and utilises the
information about the model of the motor.
1 [1/x] The frequency converter reduces torque output.
The frequency converter sets the magnetising
reference inversely proportional to the speed using
a static curve that represents the relationship
between DC link voltage and the speed.
150
Function:
current limit controller. Selection of a high
value makes the controller react faster. Too
high a setting leads to controller
instability.
Function:
[0.002 - 2 s] Controls the current limit control
integration time. Setting it to a
lower value makes it react faster. A
setting too low leads to control
instability.
Function:
[1 - Controls the current limit control low-pass
filter.
This makes it possible to react to peak
values or to average values. When
selecting average values, it is sometimes
possible to run with higher output current
and instead trip on the hardware limit for
current. However, the control reacts slower
as it does not react on immediate values.
Function:
Parameter 14-35 Stall Protection is active in Flux
mode only.
mode and might cause the motor to be lost.
mode.
Function:
Danfoss A/S © Rev. 10/2014 All rights reserved.
®
VLT AutomationDrive FC 301/302
3.15.5 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
sation (AEO) mode in parameter 1-03 Torque Characteristics.
14-40 VT Level
Range:
66 %
*
%]
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non-salient SPM.
14-41 AEO Minimum Magnetisation
Range:
Size
related
*
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non-salient SPM.
14-42 Minimum AEO Frequency
Range:
10 Hz
*
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non-salient SPM.
14-43 Motor Cosphi
Range:
Size
related
*
Function:
NOTICE
[40 - 90
This parameter cannot be adjusted
while the motor is running.
Enter the level of motor magnetisation at low
speed. Selection of a low value reduces
energy loss in the motor, but also reduces
load capability.
Function:
[40 - 75 Enter the minimum allowable magneti-
%] sation for AEO. Selection of a low value
reduces energy loss in the motor, but
can also reduce resistance to sudden
load changes.
Function:
[5 - 40 Hz] Enter the minimum frequency at which the
Automatic Energy Optimisation (AEO) is to
be active.
Function:
[0.40 - The Cos(phi) setpoint is automatically set
0.95] for optimum AEO performance. This
parameter should normally not be altered.
However, in some situations it may be
necessary to enter a new value to fine-
tune.
MG33MJ02