6 torque feedforward control, Torque feedforward control ( 564), 12 basic drive functions – Lenze E94AxPExxxx User Manual
Page 564
12
Basic drive functions
12.12
Brake control
564
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
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12.12.2.6 Torque feedforward control
In automatic operation (mode 2/12) the brake control offers the possibility of precontrolling the
required torque of the drive when the brake is released.
Via
first the basic selection on whether a parameterised starting torque or the torque
memorised during the last application process is to be used for the feedforward control.
Feedforward control with parameterised starting torque
[12-38] Feedforward control with parameterised starting torque
Note!
The torque is precontrolled for one second. During this time, the actual torque must have
reached 90 % of the set torque, otherwise a fault is tripped!
The torque feedforward control is also supported for the V/f control.
: Starting torque 1
: Starting torque 2
: Source of starting torque
= 0, a change-over between
two starting torques is possible via input
BRK_bStartingTorque2:
• BRK_bStartingTorque2 = FALSE: Starting
torque 1 (
) is used.
• BRK_bStartingTorque2 = TRUE: Starting
torque 2 (
) is used.
1
0
BRK_bStartingTorque2
C02586
C02587
1
0
C02588 = 0
S&H
CTRL
Speed controller