Danfoss VLT Automation Drive FC 360 Programming Manual page 100

Parameter Descriptions
While the current control is active, the frequency converter
can only be stopped by setting a digital input to [2] Coast
inverse or [3] Coast and reset inv. Any signals on terminals
18–33 are not active until the frequency converter is no
longer near the current limit.
By using a digital input set to [2] Coast inverse or [3] Coast
and reset inv., the motor does not use the ramp-down
time, since the frequency converter is coasted. If a quick
stop is necessary, use the mechanical brake control
4 4
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
*
14-31 Current Lim Ctrl, Integration Time
Range:
0.020 s [0.002 - 2 s] Controls the current limit control
*
14-32 Current Lim Ctrl, Filter Time
Range:
5 ms [1 - 100 ms] Sets a time constant for the current limit
*
4.13.5 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 % [40 -
90 %]
*
98
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 magnetisation at low
speed. Selection of a low value reduces energy
loss in the motor, but also reduces load
capability.
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®
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 group chapter 4.13.6 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 from 11 to
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 magnetisation
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 [2]
PM, salient IPM, non Sat.
+
Normally VVC PM control automatically
optimises d-axis demagnetising current based on
d-axis and q-axis settings. When
parameter 1-10 Motor Construction is set to [2]
PM, salient IPM, non Sat, use this parameter to
compensate the saturation effect at high load. In
most cases, decreasing this value can improves
the efficiency. However, 0% means no optimi-
sation and the d-axis current is zero (not
recommended).
Function:
Off
On
Grid Type
Function:
Disables DC-link compensation.
Enables DC-link compensation.
Function:
MG06C602