Danfoss FC 300 Programming Manual page 51

Parameter Descriptions
2-25 Brake Release Time
Range: Function:
0.20 s [0.00 - 5.00 This value defines the time it takes for the
*
s] mechanical brake to open. This parameter
must act as a time-out when brake
feedback is activated.
2-26 Torque Ref
Range: Function:
0.00 % [Application The value defines the torque applied
*
dependant] against the closed mechanical brake,
before release
I) Activate brake delay: The frequency converter starts again from the mechanical brake engaged position.
II) Stop delay: When the time between successive starts is shorter than the setting in par. 2-24 Stop Delay, the frequency converter starts
FC 300 Programming Guide
Illustration 3.4: Brake release sequence for hoist mechanical brake control
without applying the mechanical brake (e.g. reversing).
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
2-27 Torque Ramp Time
Range: Function:
0.2 s [0.0 - 5.0 s] The value defines the duration of the torque
*
ramp in clockwise direction.
2-28 Gain Boost Factor
Range: Function:
1.00 [1.00 - 4.00 ] Only active in flux closed loop. The function
*
ensures a smooth transition from torque
control mode to speed control mode when
the motor takes over the load from the brake.
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