Danfoss VLT AutomationDrive FC 301 Programming Manual page 116

VLT AutomationDrive FC 301/302
Programming Guide
Option Name
[6] Warning & trip 30s
[7] Warning 60s
[8] Trip 60s
[9] Warning & trip 60s
[10] Warning 300s
[11] Trip 300s
[12] Warning & trip 300s
[13] Warning 600s
[14] Trip 600s
[15] Warning & trip 600s
Parameter 2-14 Brake Voltage Reduce
Table 162: Parameter 2-14 Brake Voltage Reduce
2-14 Brake Voltage Reduce
Default value: 0
Conversion index: 0
This parameter can reduce the DC voltage where the brake resistor is active. It is only valid for T4 units. Setting this parameter may
change the brake resistor (parameter 2-11 Brake Resistor (ohm)).
Parameter 2-15 Brake Check
Table 163: Parameter 2-15 Brake Check
2-15 Brake Check
Default value: [0] Off
Conversion index: –
Parameter 2-15 Brake Check is only active in drives with an integral dynamic brake. Select type of test and monitoring function to
check the connection to the brake resistor, or whether a brake resistor is present, and then show a warning or an alarm in the event
of a fault.
The brake resistor disconnection function is tested during power-up. However, the brake IGBT test is performed when there is no
braking. A warning or trip disconnects the brake function.
The testing sequence is as follows:
• 1: The DC-link ripple amplitude is measured for 300 ms without braking.
• 2: The DC-link ripple amplitude is measured for 300 ms with the brake turned on.
-
If the DC-link ripple amplitude while braking is lower than the DC-link ripple amplitude before braking +1%: Brake check has
failed by returning a warning or alarm.
-
If the DC-link ripple amplitude while braking is higher than the DC-link ripple amplitude before braking +1%: Brake check is
OK.
116 | Danfoss A/S © 2022.12
Description
Parameter type: Range, 0 - 200 V
Data type: Uint16
Parameter type: Option
Data type: Uint8
N O T I C E
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334