Danfoss VACON 3000 Application Manual page 223

VACON® 3000
Application Guide
7.281 (ID 1534) Load Drooping Mode
Location in the menu: P3.1.2.4.5
Use this parameter to set the load drooping mode.
Selection number Selection name
0 Normal
1 Linear removal
7.282 (ID 1535) Brake Opening Frequency Limit
Location in the menu: P3.14.3
Use this parameter to set the frequency limit for opening the mechanical brake. The value of the parameter P3.14.3 is the output
frequency limit of the drive to open the mechanical brake. In open loop control, we recommend that you use a value that is equal to
the nominal slip of the motor.
The output frequency of the drive stays at this level until the brake mechanical delay is expired, and the system receives the correct
brake feedback signal.
7.283 (ID 1539) Brake Closing Frequency Limit
Location in the menu: P3.14.4
Use this parameter to set the frequency limit for closing the mechanical brake. The value of the parameter P3.14.4 is the output
frequency limit of the drive to close the mechanical brake. The drive stops and the output frequency goes near 0. You can use the
parameter for the 2 directions, positive and negative.
7.284 (ID 1541) Brake Control
Location in the menu: P3.14.1
Use this parameter to set the operation mode of the mechanical brake.
Mechanical brake status can be supervised via digital input when mode 2 is selected. Monitor the mechanical brake with the moni-
toring value Application Status Word 1 in the monitoring group Extras and advanced.
The Mechanical brake control function controls an external mechanical brake with a digital output signal. The mechanical brake is
opened/closed when the drive output frequency breaks the opening/closing limits.
Selection Selection name
number
0 Disabled
1 Enabled
2 Enabled with brake status su-
pervision
Danfoss A/S © 2021.09
Description
The load drooping factor is constant through the frequency range.
The load drooping is removed linearly from the nominal frequency to zero frequency.
Description
The mechanical brake control is not used.
The mechanical brake control is used, but there is no supervision of the brake
status.
The mechanical brake control is used, and a digital input signal monitors the
brake status (P3.14.8).
Parameter descriptions
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