Lenze DSD User Manual download pdf (Page 302)

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101

10 Structure of the drive axis

10.3 Drive concept

302

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

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Control types

All Lenze inverters are provided with the linear V/f control (VFC) which, however, requires an over-

dimensioning of the inverter with regard to the motor. Moreover, the motor may only be utilised to

approx. 75 % of the rated torque.

Servo Drives 9400 are provided with the special Voltage Vector Control (VVC) motor management

which is suitable for vertical conveyors with encoderless drive systems. This procedure ensures a

motor excitement coordinated to each operating status. For this purpose, the rated output current

of the inverter has to be at least 120 % of the rated motor current.

Suitable control types

• VFCplus with VVC

V/f control with linear V/f characteristic

• VVC: Voltage Vector Control

• VVC is activated via parameters

• Suitable for motor power ≤55 kW

• Contained in Servo Drives 9400

•VFCplus linear

V/f control with linear V/f characteristic

• Suitable for motor power ≤7.5 kW (recommended limit value)

• Contained in all Lenze inverters

 Tip!

• Lenze Servo Drives 9400 with VVC are recommendable for vertical conveyors with en-

coderless drive system ≤55 kW.

• Always execute drive systems >55 kW with feedback.

Unsuitable control types

•VFCplus square-law

V/f control with square-law V/f characteristic

•VFCplus eco

Energetically optimised V/F control

•SLVC

Sensorless vector control

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