Brake Resistors - Danfoss FC 300 Design Manual

10 Options and Accessories
10.9.2 Ordering
The MCF 106 can be purchased built-in from factory or as a seperate option.
• Built-in: position 33-37 of the type code. Via these characters it is specified which options are wanted in the upper- and the lower position of
the MCF 106.
• Seperate option: Sales no.130B1130 for non-coated and 130B1230 for coated.
A/B Options in C Slot
Upper position in MCF 106
BB
A0
A1
A4
A5
A6
A7
BK
BR
BU
BZ
MCF 106 A/B in C Option Adaptor
E
Lower position in MCF 106
BB
AN
BK
BR
BU
10
BZ
The Option Adapter only supports options that have been prepared for this use. The various options will be prepared for this use in the near future. MCA
121 EthernetIP will be the first one to be available for MCF 106.
For installations in bookstyle enclosures (A2, A3 and B3) the 60 mm mounting kit is used and must be ordered when buying the adaptor as a separate
option.
Please see the MCF 106 Instuction Manual, MI38Fxyy, for installation instructions.

10.10 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
resistors. Code numbers can be found in the section
222
No option in 1st A/B-in-C-slot
MCA-101 Profibus DP V1
MCA-101 Profibus DP V1
MCA-104 DeviceNet
MCA-104 DeviceNet
MCA-105 CanOpen
MCA-105 CanOpen
MCB-101 General purpose I/O
MCB-102 Encoder Option
MCB-103 Resolver Option
MCB-108 Safety PLC Interface
MCF 106 A/B in C Option Adaptor
No option in 2nd A/B-in-C-slot
MCA-121 Ethernet IP
MCB-101 General purpose I/O
MCB-102 Encoder Option
MCB-103 Resolver Option
MCB-108 Safety PLC Interface
How to order
.
MG.33.BC.02 - VLT
Control with brake function
® is a registered Danfoss trademark
FC 300 Design Guide
Position: 33-37
Position: 33-34
Position: 35
Position: 36-37
for the dimensioning of brake