Danfoss VLT AutomationDrive FC 300 Design Manual page 51

Introduction
Motor
Speed
Premag Torque Ramp
Up Time
p. 2-27
Torque Ref. p. 2-26
Torque
Ref.
Relay
Mech Brake
Gain Boost. p. 2-28
Gain Boost or
Postion Control
Illustration 3.34 Hoist mechanical brake control for FC 302 FLUX with motor feedback
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).
NOTE
For an example of advanced mechanical brake control for hoisting applications, see 8 Application Examples.
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®
VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
Brake Release Ramp 1 Up
Time P. 3-41
p. 2-25
Position P Start Proportional Gain p.2-30
Speed PID Start Proportional Gain p. 2-31
Speed PID Start Integral Time p. 2-32
Speed PID Start Lowpass Filter Time p. 2.33
®
MG33BE02 - VLT is a registered Danfoss trademark
Ramp 1 Down Stop Delay Activate Brake
P. 3-42 P. 2-24 Delay
P. 2-23
3 3
Torque Ramp
Down Time
p. 2-29
49