Lenze E94A - Manual (Page 647)

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
647
5 Function blocks
5.208 L_WndIdentMInertia - identification of the moment of inertia
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Identification procedure
1. The basic function "Torque follower" is activated.
• Output bBusy changes to TRUE.
2. If the drive is still coasting it is waited until the motor stops coasting first.
3. The drive is accelerated to the specified maximum speed (C04870) with the specified torque set-
point (C04871).
4. When the drive has reached the maximum speed, it is braked to standstill again with the inverse
torque setpoint.
5. The present moment of inertia is calculated.
• At the output dwMInertia the calculated value is displayed as a physical value in the unit
[0.01 kg cm 2 ].
6. After the identification has been completed successfully, the output bBusy is reset to FALSE, and
the output bDone is set to TRUE.
State machine for the identification
The identification is effected according to the following state machine:
[5-157] State machine for the identification run
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