3 defining current and speed limits, Defining current and speed limits, 5motor control (mctrl) – Lenze 8400 User Manual

Page 145

Advertising
background image

Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05

145

5

Motor control (MCTRL)

5.3

Defining current and speed limits

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

5.3

Defining current and speed limits

Limitation of the speed setpoint
Parameterising the reference speed in

C00011

means that the drive must rotate at the set speed if

a speed setpoint of 100% is specified.
All speed setpoint selections are provided in % and always refer to the reference speed set in

C00011

.

Tip!
For reasons of achievable resolution and the accuracy involved, the reference speed should

be geared to the speed range required for the respective application.
Lenze recommendation: Reference speed (

C00011

) = 1500 ... 3000 rpm

Irrespective of the selected motor control, there are more limitation options:

Parameter

Info

Lenze setting

Value Unit

C00909/1

Max. positive speed

120 %

C00909/2

Max. negative speed

120 %

C00910/1

Max. positive output frequency

1000 Hz

C00910/2

Max. negative output frequency

1000 Hz

Note!

In the torque-controlled operation (bTorquemodeOn = TRUE), the limitation of the speed

setpoint does not have any effect! In this case, a permissible speed range can be defined

via speed limitation (nSpeedHighLimit and nSpeedLowLimit).

Advertising