Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 100

VLT® AutomationDrive EZ FC 321
Programming Guide
Parameter 2-13 Brake Power Monitoring
Table 156: Parameter 2-13 Brake Power Monitoring
2-13 Brake Power Monitoring
Default value: [0] Off
Conversion index: –
This parameter is only active in drives with a brake. This parameter enables monitoring of the power to the brake resistor. The pow-
er is calculated based on the resistance (parameter 2-11 Brake Resistor (ohm)), the DC-link voltage, and the resistor duty time. If pow-
er monitoring is set to [0] Off or [1] Warning, the brake function remains active, even if the monitoring limit is exceeded. This may
lead to thermal overload of the resistor. It is also possible to generate a warning via a relay/digital output. The measuring accuracy
of the power monitoring depends on the accuracy of the resistance of the resistor (better than ±20%).
Option Name
[0]* Off
[1] Warning 120s
[2] Trip 120s
[3] Warning & Trip 120s
[4] Warning 30s
[5] Trip 30s
[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 2-15 Brake Check
Table 157: 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.
100 | Danfoss A/S © 2021.08
Parameter type: Option
Data type: Uint8
Description
No brake power monitoring required.
Activates a warning on the display when the power transmitted during the duty time exceeds
100% of the monitoring limit (parameter 2-12 Brake Power Limit (kW)). The warning disappears
when the transmitted power drops below 80% of the monitoring limit.
Trips the drive and shows an alarm when the calculated power exceeds 100% of the monitoring
limit.
Activates both of the above, including warning, trip, and alarm.
Parameter type: Option
Data type: Uint8
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU373327181955en-000101 / 130R1208