Lenze i950 Series, Manual

Page: 243 / 500

Address Name / setting range / [default setting] Info
0x2B03:001 Voltage grid points (y) user V/f characteristic: y1 = U01
(x = f01)
0.00 ... [400.00] ... 1000.00 V Freely parameterisable V/f characteristic (values for Y axis).
0x2B03:002 Voltage grid points (y) user V/f characteristic: y2 = U02
(x = f02)
0.00 ... [320.00] ... 1000.00 V
0x2B03:003 Voltage grid points (y) user V/f characteristic: y3 = U03
(x = f03)
0.00 ... [240.00] ... 1000.00 V
0x2B03:004 Voltage grid points (y) user V/f characteristic: y4 = U04
(x = f04)
0.00 ... [160.00] ... 1000.00 V
0x2B03:005 Voltage grid points (y) user V/f characteristic: y5 = U05
(x = f05)
0.00 ... [80.00] ... 1000.00 V
0x2B03:006 Voltage grid points (y) user V/f characteristic: y6 = U06
(x = f06)
0.00 ... [0.00] ... 1000.00 V
0x2B03:007 Voltage grid points (y) user V/f characteristic: y7 = U07
(x = f07)
0.00 ... [80.00] ... 1000.00 V
0x2B03:008 Voltage grid points (y) user V/f characteristic: y8 = U08
(x = f08)
0.00 ... [160.00] ... 1000.00 V
0x2B03:009 Voltage grid points (y) user V/f characteristic: y9 = U09
(x = f09)
0.00 ... [240.00] ... 1000.00 V
0x2B03:010 Voltage grid points (y) user V/f characteristic: y10 =
U10 (x = f10)
0.00 ... [320.00] ... 1000.00 V
0x2B03:011 Voltage grid points (y) user V/f characteristic: y11 =
U11 (x = f11)
0.00 ... [400.00] ... 1000.00 V
13.4.4 Activate voltage vector control (Imin controller)
The voltage vector control is used if a comparatively high starting torque must be provided.
This function ensures that the required motor current is maintained in the lower speed range.
NOTICE
The boost function described here adds to the
4
Set voltage boost function.
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Only set one of the two "boost" functions.
▶
Recommendation: torque increase in the lower speed range
▶
Take into consideration that the increased current at low speeds also entails higher heat los-
ses of the motor.
•
The voltage vector control is activated by defining a current setpoint.
•
For the automatic calculation of the control parameters, the "Calculate Imin controller"
function is provided via parameter .
Parameter
Address Name / setting range / [default setting] Info
0x2B04 V/f boost controller - current setpoint
0.00 ... [0.00] ... 500.00 A Setting of the current setpoint for the voltage vector control.
•
The setting "0.00 A" deactivates the voltage vector control.
•
When defining the current setpoint, we recommend you to provide a
reserve of 20 % in order to largely exclude a "stalling" of the motor
caused by unexpected additional loads.
•
Example of starting torque = rated motor torque: set the current set-
point to approx. 120 % of the load current.
Configuring the motor control
V/f characteristic control for asynchronous motor (VFC open loop)
Define V/f characteristic shape
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