Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 278

VLT® AutomationDrive EZ FC 321
Programming Guide
is used to reduce these voltage ripples in the DC link. In general, DC-link compensation is recommended for most applications, but
pay attention when operating in field weakening as it can generate speed oscillations at the motor shaft. In field weakening, turn off
DC-link compensation.
Option Name
[0] Off
[1]* On
Parameter 14-52 Fan Control
Table 508: Parameter 14-52 Fan Control
14-52 Fan Control
Default Value: [0] Auto
Conversion Index: -
Select the minimum speed of the main fan.
Op- Name Description
tion
[0]* Auto
Select [0] Auto to run fan only when internal temperature in the drive is in the range 35 °C (95 °F) to ap-
proximately 55 °C (131 °F). The fan runs at low speed below 35 °C (95 °F), and at full speed at approxi-
mately 55 °C (131 °F).
[1] On 50% The fan always runs at 50% speed or above. The fan runs at 50% speed at 35 °C (95 °F), and at full speed at
approximately 55 °C (131 °F).
[2] On 75% The fan always runs at 75% speed or above. The fan runs at 75% speed at 35 °C (95 °F), and at full speed at
approximately 55 °C (131 °F).
[3] On 100% The fan always runs at 100% speed.
[4] Auto (Low This option is the same as [0] Auto, but with special considerations around and below 0 °C (32 °F). In op-
temp env.)
tion [0] Auto there is a risk that the fan starts running around 0 °C as the drive detects a sensor fault and
thus protects the drive while reporting warning 66, Heat sink Temperature Low. Option [4] Auto (Low temp
env.) can be used in very cold environments and prevents the negative effects of this further cooling and
avoids warning 66, Heat sink Temperature Low.
Parameter 14-53 Fan Monitor
Table 509: Parameter 14-53 Fan Monitor
14-53 Fan Monitor
Default Value: [1] Warning
Conversion Index: -
Select the drive action if a fan fault is detected.
Option
[0]
[1]*
[2]
278 | Danfoss A/S © 2021.08
Description
Disables DC-link compensation.
Enables DC-link compensation.
Parameter Type: Option
Data Type: Uint8
Parameter Type: Option
Data Type: Uint8
Name
Disabled
Warning
Trip
Parameter Descriptions
Setup: All set-ups
Change during operation: True
Setup: All set-ups
Change during operation: True
Description
AU373327181955en-000101 / 130R1208