Danfoss VLT AQUA Drive Design Manual page 80

3. VLT AQUA Selection
3.6.13. Brake Resistors
In applications where the motor is used as a brake, energy is generated in the motor and send back into the frequency converter. If the energy can not
be transported back to the motor it will increase the voltage in the converter DC-line. In applications with frequent braking and/or high inertia loads this
increase may lead to an over voltage trip in the converter and finally a shut down. Brake resistors are used to dissipate the excess energy resulting from
the regenerative braking. The resistor is selected in respect to its ohmic value, its power dissipation rate and its physical size. offers a wide variety of
different resistors that are specially designed to our frequency converters. See the section
resistors. Code numbers can be found in the section
3
3.6.14. Remote mounting Kit for
The Local Control Panel can be moved to the front of a cabinet by using
the remote build in kit. The enclosure is the IP65. The fastening screws
must be tightened with a torque of max. 1 Nm.
Ordering no. 130B1113
Illustration 3.24: LCP Kit with graphical LCP, fasteners, 3 m cable
and gasket.
LCP Kit without LCP is also available. Ordering number: 130B1117
80
How to order .
Technical data
Enclosure:
Max. cable length between and unit:
Communication std:
Ordering no. 130B1114
Illustration 3.25: LCP Kit with numerical LCP, fasternes and gas-
ket.
®
MG.20.N4.02 - VLT is a registered Danfoss trademark
®
VLT AQUA Drive Design Guide
Control with brake function for the dimensioning of brake
IP 65 front
3 m
RS 485