ICON500 high performance vector control frequency inverter user manual Chapter 7 Selection guide of inverter
Accessory
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95-
Chapter 7 Selection Guide of inverter Accessory
Selection Guide of braking component
The braking resistor is used to consume the energy fed back by the motor to the inverter during braking or
generating operation, so as to achieve quick braking or prevent the inverter from reporting the main circuit
overvoltage fault. Braking resistor selection has two parameters: resistance and power, under normal circumstances,
the greater the system inertia, the need for deceleration time is shorter, the more frequent braking, the braking
resistor selection should be greater power , The smaller the resistance.
1
、
Selection of braking units
When braking, almost all the renewable energy of motor is consumed on the braking resistor.
R =
U
2
P
B
Formula
：
U --- The braking voltage when the system brakes stably (different system is different, for the 380VAC
system generally take 700V)
R - Braking resistor
Pb
– Braking Power
2
、
Selection power of braking resistor
Braking resistor power can be calculated according to the following formula
：
= P
B
× D
Formula
，
---- Braking resistor power
D ------- Braking frequency (braking process accounts for the proportion of the entire process), by the load
conditions to determine the characteristics of common occasions typical values are shown in the table below
：
Table 7-1 Braking frequency of common applications
3
、
braking components selection table
Table 7-2 ICON500
braking components selection table
Three phase 380V
Model
Recommend power of
braking resistor
（
10%braking
Recommend
resistance value of
braking resistor
Braking unit
ICON500-R75GT4B
100W
≥ 300Ω
Built-in as standard
ICON500-1R5GT4B
150W
≥ 220Ω
ICON500-2R2GT4B
300W
≥ 180Ω
ICON500-4R0G/5R5PT4B
500W
≥ 130Ω
applications
D value
elevator
10%
～
20%
Unwinding and winding
40%
～
50%
Centrifuge
40%
～
60%
Occasional brake load
5%
General application
10%
