Lenze E84AVHC Series - 5.6.3 Optimise control behaviour; 5.6.3.1 Optimising the starting performance after a controller enable

Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010 L 139
8400 HighLine | Parameter setting & configuration
Motor control (MCTRL)
Sensorless vector control (SLVC)
5.6.3 Optimise control behaviour
5.6.3.1 Optimising the starting performance after a controller enable
After the controller has been enabled, the starting action of the motor is delayed due to the
magnetisation of the motor. Under consideration of the motor rotor time constant
(C00083
), the time delay is calculated as follows:
If this delay cannot be tolerated for specific applications, the motor must always be
operated in an energised condition. For this, select one of the following options:
Procedure without setting a controller inhibit
1. Deactivate the auto-DCB function with C00019
= 0.
2. Do not
activate the controller inhibit. Instead, stop the drive by selecting a setpoint of
0 or by activating the quick stop function.
Procedure with setting a controller inhibit due to application requirements
1. Deactivate the auto-DCB function with C00019
= 0.
2. Enter a greater value for the motor rotor resistance (max. factor 2!) to reduce the
magnetisation time in C00082
.
 Note!
During the starting action, a jerk may occur in the machine due to the
temporarily increased motor current!
Magnetisation time 1.5 Motor rotor time constant⋅=
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