Lenze E94A - Manual (Page 646)

5 Function blocks
5.208 L_WndIdentMInertia - identification of the moment of inertia
646
Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.208.1 Basic interconnection
[5-156] Basic interconnection with the basic function "Speed follower"
5.208.2 Carrying out the identification
Starting the identification
By setting the input bStartIdent from FALSE to TRUE, you start the identification.
 bStartIdent = TRUE: start identification
 Output of the moment of inertia calculated
/6B7RUTXH)ROORZHU
7)BE(QDEOH
7)BGQ7RUTXH6HWBQ
7)BGQ6SHHG+LJK/LPLWBQ
7)BGQ6SHHG/RZ/LPLWBQ
7)BE(QDEOHG
0
7RUTXH
VHWSRLQW
E)ROORZHU(QDEOHG
E6WDUW,GHQW
GZ5HIHUHQFH7RUTXH
GQ6WDWH
E'RQH
E(QDEOH)ROORZHU
GQ7RUTXH6HWBQ
E%XV\ GQ$FWXDO0RWRU6SHHGBQ
GZ5HIHUHQFH6SHHG
GQ$FWXDO0RWRU7RUTXHBQ GZ0,QHUWLD
/B:QG,GHQW0,QHUWLD
0,BGZ5HIHUHQFH7RUTXH
0,BGQ$FWXDO0RWRU6SHHGBQ
0,BGZ5HIHUHQFH6SHHG
0,BGQ$FWXDO0RWRU7RUTXHBQ
/6B0RWRU,QWHUIDFH
&
&
&
&
n
o

Danger!
For the identification of the current moment of inertia, the drive is accelerated to the
maximum speed set in C04870 and is braked to standstill again.

Note!
The rate of change of the speed results from the torque setpoint set in C04871 and the
present moment of inertia.