Danfoss VLT HVAC Drive FC 131 Programming Manual page 129

VLT® HVAC Drive FC 131
Programming Guide
Enter the level of motor magnetization at low speed. Low values reduce energy loss in the motor, but also reduce load capability.
Table 248: Range:
Min: 40%
14-41 AEO Minimum Magnetisation
Default value: 66%
Conversion index: 0
Enter the minimum allowable magnetization for AEO. Low values reduce energy loss in the motor, but also reduce resistance to
sudden load changes.
Table 249: Range:
Min: 40%
14-44 d-axis current optimization for IPM
Default value: 100%
Conversion index: 0
This parameter is available only when parameter 1-10 Motor Construction is set to [2] PM, salient IPM, non-Sat. Normally, VVC
control automatically optimizes d-axis demagnetizing current based on d-axis and q-axis settings. When parameter 1-10 Motor Con-
struction is set to [2] PM, salient IPM, non-Sat, use this parameter to compensate the saturation effect at high load. Usually, decreas-
ing this value improves the efficiency. However, 0% means no optimization and the d-axis current is 0 (this is not recommended).
Table 250: Range:
Min: 0%
4.11.6 14-5* Environment
These parameters help the drive to operate under special environmental conditions.
14-50 RFI Filter
Default value: [1] On
Conversion index: -
This parameter is only valid for drives of the following enclosure sizes:
• IP54, 3x380–480 V, enclosure sizes I6–I8.
Table 251: Option:
[0] Off Select [0] Off only if the drive is fed by an isolated mains source (IT mains). In this mode, the internal RFI filter capaci-
tors between chassis and the mains RFI filter circuit are cut out to reduce the ground capacity currents.
[1] On
Select [1] On to ensure that the drive complies with EMC standards.
14-51 DC-Link Voltage Compensation
Default value: [1] On
Conversion index: -
Enable the DC-link compensation to reduce ripple in the DC-link voltage (recommended for most applications).
Table 252: Option:
[0]
[1]
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Max: 90%
Parameter type: Range
Data type: u_int8
Max: 75%
Parameter type: Range
Data type: u_int8
Max: 200%
Parameter type: Option
Data type: u_int8
Parameter type: Option
Data type: u_int8
Default value: 90%
2-setup: All setups
Change during operation: False
Default value: 66%
2-setup: All setups
Change during operation: True
Default value: 100%
2-setup: 1 setup
Change during operation: False
2-setup: All setups
Change during operation: False
Off
On
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Parameters
+
PM