Danfoss VLT AutomationDrive FC 300 Programming Manual page 54

Parameter Descriptions
2-26 Torque Ref
Range:
0.00 % [Application
*
dependant]
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.
Motor
Speed
Premag Torque Ramp
Time
p. 2-27
Torque Ref. 2-26
Torque
ref.
Relay
Gain Boost Factor
p. 2-28
Gain
Boost
Mech.
Brake
1
Illustration 3.8 Brake release sequence for hoist mechanical brake control
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 2-24 Stop Delay, the frequency converter starts without
applying the mechanical brake (e.g. reversing).
FC 300 Programming Guide
Function:
The value defines the torque
applied against the closed
mechanical brake, before release
II
I
Brake
Ramp 1 up
Release
p. 3-41
Time
p. 2-25
2 3
®
MG.33.MB.02 - VLT is a registered Danfoss trademark
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.
Ramp 1 down
p. 3-42
Stop Activate
Delay Brake
p. 2-24 Delay
p. 2-23
53
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