WEG CFW-11 Series - Installation of the Braking Resistor - Frame Sizes B, C, D and E

Installation and Connection
3
3-40 | CFW-11
Table 3.10 - Dynamic braking specications
Inverter Model
Maximum
Braking
Current
(I
max
)
[A]
Maximum
Braking Power
(peak value)
(P
max
)
(2)
[kW]
Effective
Braking
Current
(I
effective
)
(1)
[A]
Braking Power
(mean value)
in the Braking
Resistor (P
R
)
(2)
[kW]
Recommended
Resistor
[W]
Power Wire Size
(terminals DC+
and BR)
(3)
[mm
2
(AWG)]
CFW110002T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110004T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110007T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110010T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110012T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110017T5 36.4 43.6 31.9 33.5 33 6 ( 8 )
CFW110022T5 45.5 42.7 31.7 15.1 22 10 (8)
CFW110027T5 45.5 42.7 31.7 15.1 22 10 (8)
CFW110032T5 45.5 42.7 31.7 15.1 22 10 (8)
CFW110044T5 45.5 42.7 31.7 15.1 22 10 (8)
CFW110002T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110004T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110007T6 45.5
54.5 45.5 54.5 26.4 10 ( 6 )
CFW110010T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110012T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110017T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110022T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110027T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110032T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110044T6 45.5 54.5 45.5 54.5 26.4 10 ( 6 )
CFW110053T6 181.8 218.2 152.0 152.5 6.6 95 ( 3/0 )
CFW110063T6 181.8 218.2 152.0 152.5 6.6 95 ( 3/0 )
CFW110080T6 181.8 218.2 152.0 152.5 6.6 95 ( 3/0 )
CFW110107T6 181.8 218.2 152.0 152.5 6.6 95 ( 3/0 )
CFW110125T6 272.7 327.3 152.0 101.7 4.4 2 x 50 ( 2 x 1/0 )
CFW110150T6 272.7 327.3 152.0 101.7 4.4 2 x 50 ( 2 x 1/0 )
(1) The effective braking current presented is just an indicative value, because it depends on the braking duty cycle. The effective braking current can be obtained
from the equation below, where t
br
is given in minutes and corresponds to the sum of all braking times during the most severe cycle of 5 (five) minutes.
I
effective
= I
max
x
t
br
5
(2) The P
max
and P
R
values (maximum and mean power of the braking resistor respectively) presented are valid for the recommended resistors and for the
effective braking currents presented in Table 3.10 on page 3-40. The resistor power change according to the braking duty cycle.
(3) For specifications on the recommended terminal type for the connection of the braking resistor (terminals DC+ and BR), refer to the DC+ terminal
specification on Table 3.4 on page 3-23 to Table 3.7 on page 3-28.
3.2.3.2.2 Installation of the Braking Resistor - Frame Sizes B, C, D and E
Install the braking resistor between the power terminals DC+ and BR.
Use twisted cable for the connection. Separate these cables from the signal and control cables. Size the cables
according to the application, respecting the maximum and effective currents.
If the braking resistor is installed inside the inverter cabinet, consider its additional dissipated energy when sizing
the cabinet ventilation.
Set parameter P0154 with the resistor value in ohms and parameter P0155 with the maximum resistor power
in kW.
DANGER!
The inverter has an adjustable thermal protection for the braking resistor. The braking resistor and
the braking transistor may damage if parameters P0153, P0154, and P0155 are not properly set or
if the input voltage surpasses the maximum permitted value.