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2-26 Torque Ref
Range:
Function:
0.00%
*
[-100.00 - 100.00 %]
The value defines the torque applied against the closed mechanical brake, before release
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
*
[0.00 - 4.00]
When a speed PID-control is connected to the output (flux closed loop) it must be possible to boost the propor-
tional gain of the control during the
Activate Brake Delay
(par. 2-23). By increasing the gain, the bump when the
motor takes over the load from the brake can be reduced. The risk of oscillation is very small due to the relatively
short duration and the low (zero) speed.
Illustration 2.4: Brake release sequence for hoist mechanical brake control
2. How to Programme
FC 300 Programming Guide
60
MG.33.M3.02 - VLT
®
is a registered Danfoss trademark
2