Danfoss VLT AutomationDrive FC 300 Operating Instructions Manual page 51

®
VLT AutomationDrive FC 300 Operating
Instructions
2-25 Brake Release Time
Range:
0.20 s* [0.00 - 5.00 s]
2-26 Torque Ref
Range:
0.00 %* [0 - 0 %]
2-27 Torque Ramp Time
Range:
0.2 s* [0.0 - 5.0 s]
2-28 Gain Boost Factor
Range:
1.00 N/A* [1.00 - 4.00 N/A]
Illustration 4.1: Brake release sequence for hoist mechanical brake control
I) Activate brake delay : The frequency converter starts again from the
Stop delay
II) : When the time between successive starts is shorter than the setting in par. 2-24
applying the mechanical brake (e.g. reversing).
3-10 Preset Reference
Array [8]
Range: 0-7
Range:
0.00 %* [-100.00 - 100.00 %]
Function:
This value defines the time it takes for the mechanical brake to open/ close. This parameter must
act as a time-out when brake feedback is activated.
Function:
The value defines the torque applied against the closed mechanical brake, before release
Function:
The value defines the duration of the torque ramp in clockwise direction.
Function:
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.
mechanical brake engaged
Function:
Enter up to eight different preset references (0-7) in this parameter, using array programming. The
preset reference is stated as a percentage of the value Ref
Ref different from 0 (par. 3-02
MIN
calculated as a percentage of the full reference range, i.e. on the basis of the difference between
Ref and Ref . Afterwards, the value is added to Ref
MAX MIN
Preset ref. bit 0 / 1 / 2 [16], [17] or [18] for the corresponding digital inputs in parameter group
5.1*.
MG.33.AC.02 - VLT is a registered Danfoss trademark
position.
Stop Delay
, the frequency converter starts without
(par. 3-03
MAX
Minimum Reference ) is programmed, the preset reference is
. When using preset references, select
MIN
4 How to Programme
4
Maximum Reference ) If a
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