Lenze E94A - Manual (Page 648)

5 Function blocks
5.208 L_WndIdentMInertia - identification of the moment of inertia
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Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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Cancelling the identification
If the input bStartIdent is reset to FALSE, the active identification is cancelled immediately. Resetting
the input bFollowerEnabled to FALSE also results in the immediate abort.
• The output bBusy is reset to FALSE and the drive is brought to a standstill via quick stop.
• The cause for the abort is shown via status output dnState.
Delay of pulse enable
After activation of the function, the identification does not start immediately, but only after the de-
lay time set in C04872 has elapsed. By this, the magnetic flux of the motor can fully build up first
(only required for asynchronous machines).
• If required, the presetting is to be increased in the case of machines with great rotor time con-
stants.
Smoothing the actual speed value signal
If incremental encoders are used, it may be required to filter the actual speed value signal.
• The time constant for the filter can be set in C04873; in the majority of cases the setting "10 ms"
is sufficient.