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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 459

18 Drive dimensioning messages

18.5 Lenze motor

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18.5.13 Compliance of the ErP Directive 2009/125/EC

18.5.14 Overdimensioned motor in the case of traction-controlled winding drive

18.5.15 Speed-controlled winding drive may show unstable behaviour

Note!

According to the ErP Directive, the selected motor may only be put into circulation together with a brake.

Cause Effects Possible remedies

According to the ErP Directive (2009/

125/EC), motors without a brake in

the power range 0.75 … 375 kW may

be put into circulation within in the

EU since 16 June 2011 if they comply

with the efficiency class IE2.

Since 16 June 2011, these motor ver-

sions are no longer available at

Lenze.

• Select a motor that complies with

the efficiency class IE2, e.g.:

• High efficiency motor (MHx-

MA)

• Motor optimised for frequency

inverter (MFxMA)

• Special regulations for Switzer-

land and countries outside the EU.

Notes on energy directives can be found on http://www.Lenze.com

Note!

The utilisation of the motor is xxx, relative to the stationary torque.

The motor is clearly overdimensioned for traction-controlled winding drives with a torque setting range of

yyy. Select another motor.

Cause Effects Possible remedies

In this torque setting range, a clearly

overdimensioned motor is only able

to work to a limited extent.

Lower tensile forces cannot be

reached or cannot be repeated.

Dimension the motor in a demand-

oriented way.

Note!

With a load-matching factor of xxx, the control system of speed-controlled drives in combination with

load alternations and weakly damped mechanical transmission elements with backlash between motor

and winding shaft may show unstable behaviour.

Have the application checked by the technical support.

Cause Effects Possible remedies

The load-matching factor k

results

from the mass and the diameter of

the full reel, the gearbox ratio and

the moment of inertia of the motor.

Unstable control mode. • Reduce the load-matching factor

through a higher moment of in-

ertia of the motor of a higher

gearbox ratio.

• Optimise the motor control.

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