Basic Settings - Lenze L-force HighLine C 8400 Series Reference Manual

5.8.3

Basic settings

The following "Initial commissioning steps" must be performed to commission the
sensorless control for synchronous motors:
Initial commissioning steps
1. Select motor control:
C00006
2. Set the motor selection/motor data
• When selecting and parameterising the motor, the motor nameplate data and the equivalent circuit
diagram data are relevant. Detailed information can be found in the
( 132)" chapter.
Depending on the motor manufacturer, proceed as follows:
Lenze motor:
Selecting a motor from the motor catalogue in the
»Engineer«
- or -
1. Set the motor nameplate data
2. Automatic motor data identification
3. Set speed switching thresholds between open-loop and closed-loop controlled operation:
• Set transition speed from open-loop to closed-loop operation in
motor speed (C00087).
• Set transition speed from closed-loop to open-loop operation in
motor speed (C00087).
Tip!
• With voltage-adjusted motors, a speed switching threshold of 10 % is recommended.
• As a rule of thumb, the speed switching threshold should be selected as follows:
4. Set open-loop accelerating current in
• This value defines the height of the current that is injected during the acceleration process.
• The accelerating current must be dimensioned so that the required torque in the lower speed range can
always be reached (acceleration torque + load torque):
5. Set open-loop steady-state current in
• This value defines the height of the current for processes without acceleration (e.g. standstill or constant
setpoint speed ).
6. For improving the operating characteristics:
If required, adapt the filter time for reconstructing the rotor position and the actual speed value through the
motor model in
• We recommend using the Lenze setting:
Filter time rotor position (C00998/1) = 3 ms
Filter time actual speed value (C00998/2) = 5 ms
• Deviant from this, the following value range can be used:
Filter time rotor position (C00998/1) = 2 ... 5 ms
Filter time actual speed value (C00998/2) = 3 ... 8 ms
7. For protecting the motor from demagnetisation:
Set the ultimate current in C00939.
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
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= "3: SLPSM: Sensorless PSM"
C00996/1...2 [%]
C00995/1
C00995/1 [%]
C00995/2
C00998/1 and C00998/2.
L
8400 HighLine C | Reference manual
Sensorless control for synchronous motors (SLPSM)
"Motor selection/Motor
Third party manufacturer's motor:
1. Set the motor nameplate data
2. Automatic motor data identification
equivalent circuit diagram manually:
C00084: Motor stator resistance
C00085: Motor stator leakage inductance
C00996/1
C00996/2
U [V]
Rated, motor
--------------------------------------- 10
⋅
=
U [V]
Rated, FI
in [%] with regard to the rated motor current (C00088).
M [Nm]
Meax
------------------------------ - I [A] 1.3
⋅
=
Rated, motor
M [Nm]
Rated
in [%] with regard to the rated motor current (C00088).
Motor control (MCTRL)
data".
or set known
in [%] with regard to the rated
in [%] with regard to the rated
⋅
207