3.1.11 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. Danfoss offers a wide variety
of different resistors that are specially designed to our frequency converters. See the section
Control with brake function
for the dimensioning of brake
resistors. Code numbers can be found in the section
How to order
.
3.1.12 Remote Mounting Kit for LCP
The LCP 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.
Technical data
Enclosure:
IP 65 front
Max. cable length between and unit:
3 m
Communication std:
RS 485
Ordering no. 130B1113
Ordering no. 130B1114
Illustration 3.5: LCP Kit with graphical LCP, fasteners, 3 m cable and
gasket.
Illustration 3.6: LCP Kit with numerical LCP, fasternes and gasket.
LCP Kit without LCP is also available. Ordering number: 130B1117
For IP55 units the ordering number is 130B1129.
VLT
®
HVAC Drive Design Guide
3 VLT HVAC Drive Selection
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
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