Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 442)

9400 HighLine | Parameter setting & configuration
Diagnostics & error analysis
Maloperation of the drive
442 Firmware 1.37 - 09/2006
L
15.5 Maloperation of the drive
The motor does not rotate.
With a positive speed setpoint selection, the motor rotates clockwise instead of counter-
clockwise (when looking at the motor shaft).
The maximum current (C00022) flows and the motor does not rotate according to the
defined speed setpoint.
Cause Remedy
DC-bus voltage is too low. Check mains voltage.
Controller is inhibited. Deactivate controller inhibit (can be set by several
sources).
Holding brake is not released Release holding brake.
Quick stop is active Deactivate quick stop.
Setpoint = 0 Select setpoint.
Cause Remedy
Feedback system is not connected in correct phase
relation.
Connect feedback system in correct phase relation.
Cause Remedy
Two motor phases are interchanged, i.e. an anti-
clockwise rotating field is applied to the motor.
Proceed the following steps for verification:
1.Ensure that the motor shaft is not blocked and can
rotate freely without damaging the system.
2.Activate "U rotation test mode" for the motor control
( C00398 = "1").
–In this test mode a voltmeter is applied to the
machine with the frequency set in C00399/1 and
the amplitude from the linear characteristic of rated
voltage and rated frequency. This corresponds to a
clockwise rotating field.
3.Increase the frequency step by step for the test mode
in C00399/1 until the motor shaft starts to rotate.
–If the motor shaft does not rotate, check the
electrical connection.
4.While the motor shaft is rotating check if it rotates
clockwise when looking at the A end shield. If not, two
motor phases are interchanged.
5.Additionally check if the actual speed value displayed
in C00051 is positive and corresponds to the defined
frequency in consideration of the number of pole
pairs of the machine ( C00059 ). If not, the connection
and the parameter setting of the feedback system
must be checked.
6.Deactivate the test mode for the motor control again
( C00398 = "0").