from Firmware V06.00 - DMS 1.1 EN - 11/2011 L 27
8400 StateLine C | Operating instructions
Commissioning
Drive behaviour by default (Lenze setting)
6 Commissioning
6.1 Drive behaviour by default (Lenze setting)
Preset motor control "V/f characteristic control (VFCplus)"
The 8400 StateLine controller supports various processes for motor control. By default, the
V/f characteristic control (VFCplus) with linear characteristic for asynchronous motors is
preset in C00006 as motor control.
The V/f characteristic control (VFCplus) is a motor control mode for standard frequency
inverter applications based on a simple and robust control process which is suitable for the
operation of asynchronous motors with linear or square-law load torque characteristic
(e.g. fans). Furthermore, this motor control mode is also suitable for group drives and
special motors. Due to the low parameterisation effort, commissioning of such
applications is fast and easy.
[6-1] Principle of a linear V/f characteristic
The presettings of the parameters ensure that the controller is ready for operation right
away and the motors works adequately without further parameterisation if a controller
and a 50 Hz asynchronous machine with matching performances are assigned.
Tip!
More possible processes for motor control:
• Energy-saving V/f characteristic control (VFCplusEco)
• V/f control (VFCplus + encoder)
• Sensorless vector control (SLVC)
• Sensorless control for synchronous motors (SLPSM)
The motor voltage of the inverter is determined by
means of a linear characteristic depending on the
field frequency or motor speed to be generated. The
voltage follows a preselected characteristic.
Detailed information on the various processes can be found in the software
manual of the 8400 StateLine in the "Motor control (MCTRL)" chapter .
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