Parameter 2-13 Brake Power Monitoring
Table 156: Parameter 2-13 Brake Power Monitoring
2-13 Brake Power Monitoring
Default value: [0] Off
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
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
Description
[0]*
Off
No brake power monitoring required.
[1]
Warning 120s
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.
[2]
Trip 120s
Trips the drive and shows an alarm when the calculated power exceeds 100% of the monitoring
limit.
[3]
Warning & Trip 120s Activates both of the above, including warning, trip, and alarm.
[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
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
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.
AU373327181955en-000101 / 130R1208
100 | Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide