Lenze 8400 User Manual

5 Motor control (MCTRL)
5.7 Sensorless vector control (SLVC)
198
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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5.7.4 Optimising the control mode
5.7.4.1 Optimising the starting performance after a controller enable
After the inverter 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:
Magnetisation = 1.5 * motor rotor time constant
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!
From version 12.00.00:
• Following successful motor parameter identification, the current controller
parameters (C00075
, C00076) are calculated automatically.
• If these parameters are not
to be calculated, bit 4 of C02865/1 must be set to "1".
• Following successful motor parameter identification, the speed controller parameters
(C00070/1
, C00071/1) can be calculated automatically.
• If these parameters are to be calculated, bit 6 of C02865/1
must be set to "5".
• Following successful motor parameter identification, other controller parameters
(C00011
, C00022) can be calculated automatically.
• If these parameters are to be calculated, bit 6 of C02865/1
must be set to "6".
 Note!
During the starting action, a jerk may occur in the machine due to the temporarily
increased motor current!

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V