Danfoss VLT AutomationDrive FC 360 Programming Manual page 106

Parameter Descriptions
4.13.4 14-3* Current Limit Control
The frequency converter features an integral current limit
controller, which is activated when the motor current, and
thus the torque, is higher than the torque limits set in
parameter 4-16 Torque Limit Motor Mode and
parameter 4-17 Torque Limit Generator Mode.
When the current limit is reached during motor operation
4 4
or regenerative operation, the frequency converter tries to
reduce torque below the preset torque limits as quickly as
possible without losing control of the motor.
14-30 Current Lim Ctrl, Proportional Gain
Range:
100 % [0 - 500 %] Enter the proportional gain value for the
*
14-31 Current Lim Ctrl, Integration Time
Range:
0.020 s [0.002 - 2 s] Control the current limit control
*
14-32 Current Lim Ctrl, Filter Time
Range:
5 ms [1 - 100 ms] Set a time constant for the current limit
*
4.13.5 14-4* Energy Optimizing
Parameters for adjusting the energy optimization level in
both variable torque (VT) and automatic energy optimi-
zation (AEO) mode in parameter 1-03 Torque Characteristics.
14-40 VT Level
Range:
66 % [40 -
90 %]
*
104
VLT
Function:
current limit controller. Selection of a high
value makes the controller react faster. Too
high a setting leads to controller
instability.
Function:
integration time. Setting it to a lower
value makes it react faster. A setting too
low leads to control instability.
Function:
controller low-pass filter.
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
NOTICE
This parameter is not active when
parameter 1-10 Motor Construction is set to
options that enable PM motor mode.
Enter the level of motor magnetization at low
speed. Selection of a low value reduces energy
loss in the motor, but also reduces load
capability.
Danfoss A/S © 06/2017 All rights reserved.
®
AutomationDrive FC 360
14-41 AEO Minimum Magnetisation
Range:
66 % [40 -
*
75 %]
14-44 d-axis current optimization for IPM
Range:
100 [0 -
% 200 %]
*
4.13.6 14-5* Environment
NOTICE
Perform a power cycle after changing any of the
parameters in parameter group 14-5* Environment.
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
Option:
[0]
[1]
[2]
*
14-51 DC-Link Voltage Compensation
Option:
[0] Off
[1] On
*
14-52 Fan Control
This feature is only available in frequency converters 11–75 kW.
Option:
[5] Constant-on mode
*
[6] Constant-off mode
[7] On-when-Inverter-is-on-else-off Mode
[8] Variable-speed mode
Function:
Enter the minimum allowable magnetization
for AEO. Selection of a low value reduces
energy loss in the motor, but can also
reduce resistance to sudden load changes.
Function:
This parameter is available only when
parameter 1-10 Motor Construction is set to [3]
PM, salient IPM.
+
Normally, VVC PM control automatically
optimizes d-axis demagnetizing current based on
d-axis and q-axis settings. When
parameter 1-10 Motor Construction is set to [3]
PM, salient IPM, use this parameter to
compensate the saturation effect at high load.
Usually, decreasing this value improves the
efficiency. However, 0% means no optimization
and the d-axis current is 0 (not recommended).
Function:
Off
On
Grid Type
Function:
Disable DC-link compensation.
Enable DC-link compensation.
Function:
MG06C702