Installation Of The Braking Resistor - Frame Sizes B, C, D And E - WEG CFW-11 Series User Manual

Installation and Connection
Inverter Model
CFW110002T5
CFW110004T5
CFW110007T5
CFW110010T5
CFW110012T5
CFW110017T5
CFW110022T5
CFW110027T5
CFW110032T5
CFW110044T5
CFW110002T6
CFW110004T6
CFW110007T6
CFW110010T6
CFW110012T6
CFW110017T6
CFW110022T6
CFW110027T6
3
CFW110032T6
CFW110044T6
CFW110053T6
CFW110063T6
CFW110080T6
CFW110107T6
CFW110125T6
CFW110150T6
(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
t
br
I = I x
effective max
5
(2) The P and P values (maximum and mean power of the braking resistor respectively) presented are valid for the recommended resistors and for the
max
R
effective braking currents presented in
(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

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.
3-40 | CFW-11
Table 3.10 - Dynamic braking specifications
Maximum Maximum
Braking Braking Power
Current (peak value)
(I ) (P )
(2)
max max
[A] [kW]
36.4 43.6
36.4 43.6
36.4 43.6
36.4 43.6
36.4 43.6
36.4 43.6
45.5 42.7
45.5 42.7
45.5 42.7
45.5 42.7
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
181.8 218.2
181.8 218.2
181.8 218.2
181.8 218.2
272.7 327.3
272.7 327.3
is given in minutes and corresponds to the sum of all braking times during the most severe cycle of 5 (five) minutes.
br
Table 3.10 on page 3-40. The resistor power change according to the braking duty cycle.
to Table 3.7 on page 3-28.
Effective Braking Power
Braking (mean value)
Current in the Braking
(I ) Resistor (P )
(1) (2)
effective R
[A] [kW]
31.9 33.5
31.9 33.5
31.9 33.5
31.9 33.5
31.9 33.5
31.9 33.5
31.7 15.1
31.7 15.1
31.7 15.1
31.7 15.1
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
45.5 54.5
152.0 152.5
152.0 152.5
152.0 152.5
152.0 152.5
152.0 101.7
152.0 101.7
Power Wire Size
Recommended
(terminals DC+
Resistor
and BR)
(3)
[W]
[mm (AWG)]
2
33 6 ( 8 )
33 6 ( 8 )
33 6 ( 8 )
33 6 ( 8 )
33 6 ( 8 )
33 6 ( 8 )
22 10 (8)
22 10 (8)
22 10 (8)
22 10 (8)
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
26.4 10 ( 6 )
6.6 95 ( 3/0 )
6.6 95 ( 3/0 )
6.6 95 ( 3/0 )
6.6 95 ( 3/0 )
4.4 2 x 50 ( 2 x 1/0 )
4.4 2 x 50 ( 2 x 1/0 )