Lenze E94A - Manual (Page 637)

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
637
5 Function blocks
5.207 L_WndFrictionCompensation - friction compensation
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5.207 L_WndFrictionCompensation - friction compensation
This FB contains the two functions "friction identification" and "friction compensation".
• With the "friction identification" function the friction characteristic can be identified automati-
cally.
• For this, the FB accepts the drive control on request and carries out the identification.
• For saving the automatically identified friction characteristic, four memory locations are pro-
vided. The selection of memory locations 1 ... 4 is effected via the input dwSelectCurve.
• The friction characteristic includes 65 values which are equally distributed across the speed
range of 0 ... n
max
(C00011).
• With the "friction compensation" function, a speed-dependent compensation of the friction
torque can be carried out on the basis of a linear or a previously automatically determined fric-
tion characteristic.
• If the "friction compensation" function is activated, the input dwSelectCurve on the other
hand serves to select the friction characteristic to be used.
• If the input dwSelectCurve is = 0 or unassigned, a parameterisable linear characteristic is used
for the friction compensation.
Inputs
Function library: LenzeWinder
Runtime software licence:  Motion Control HighLevel  Motion Control TopLevel
Identifier/data type Information/possible settings
bStartIdent
BOOL
Start identification of the friction characteristic
TRUE Start identification.
bFollowerEnabled
BOOL
Interface for the basic function "Speed follower"
• Connect this input with the output SF_bEnabled of the SB LS_SpeedFollower.
dnActualMotorSpeed_n
DINT
Current speed of the motor shaft in [%]
• 100 % ≡ motor reference speed (C00011)
dnActualMotorTorque_n
DINT
Current actual torque of the motor in [%]
• 100 % ≡ motor reference torque (C00057/2)
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