Lenze 9400 - Manual (Page 228)

5 Motor interface
5.9 Monitoring
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Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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5.9.4.2 Checking the individual motor phases before operation is started
This function is available from software version V5.0!
From software version V5.0 a check via test signal application has been added. It injects a current
into the machine before the actual operation is started, by means of which both a motor phase
failure and the existence of the motor are checked. Only after the check has been carried out
successfully, the actual operation is continued.
• The setpoint current amplitude corresponds to the lower of the two following values:
• The test signal application is activated directly after controller enable if the following conditions
are fulfilled:
• In C00597 a response other than "No response" is set.
• No test mode is activated ( C00398 = 0).
• No identification procedure is active
(by device command C00002 = "51", "52", "71" or "72").
• The check actuates the response set in C00597 if one or more motor phase currents have not
reached a certain threshold value within 5 ms after controller enable.
• The threshold value depends on the device power and cannot be parameterised.
• If only one motor phase current does not reach the threshold value, "Motor phase U/V/W not
available" is entered in the logbook.
• If several motor phases do not reach the threshold value, the motor is considered as not
connected, and "Motor not connected" is entered in the logbook.
• The check is completed successfully if all three motor phase currents have exceeded the
threshold value. Then the actual operation is continued immediately.
or

Note!
• As the check is cancelled immediately if all three motor phase currents have exceeded
the threshold value, the setpoint current usually is not achieved.
• In order to be able to achieve the threshold value used for the check, the rated motor
current must at least be 10 % of the maximum device current (display in C00789 ).
• This monitoring is independent of the further rotation of the commutation angle.
50 % 2 Rated device current ⋅ ⋅
50 % 2 Rated motor current ⋅ ⋅