ABB ACS355 series, User Manual

Page: 407 / 436

Appendix: Resistor braking 407
WARNING! Never use a brake resistor with a resistance below the minimum
value specified for the particular drive. The drive and the internal chopper are
not able to handle the overcurrent caused by the low resistance.

Selecting the brake resistor cables
Use a shielded cable with the conductor size specified in section Power cable sizes
and fuses on page 377 . The maximum length of the resistor cable(s) is 5 m (16 ft).
3-phase U
N
= 380 … 480 V (380, 400, 415, 440, 460, 480 V)
03x-01A2-4 200 1180 0.37 0.5 90
03x-01A9-4 175 800 0.55 0.75 90
03x-02A4-4 165 590 0.75 1 60
03x-03A3-4 150 400 1.1 1.5 37
03x-04A1-4 130 300 1.5 2 27
03x-05A6-4 100 200 2.2 3 17
03x-07A3-4 70 150 3.0 4 29
03x-08A8-4 70 110 4.0 5 20
03x-12A5-4 40 80 5.5 7.5 15
03x-15A6-4 40 60 7.5 10 10
03x-23A1-4 30 40 11 15 10
03x-31A0-4 16 29 15 20 16
03x-38A0-4 13 23 18.5 25 13
03x-44A0-4 13 19 22.0 30 10
1)
E =EMC filter connected (metal EMC filter screw installed),
U=EMC filter disconnected (plastic EMC filter screw installed), US
parametrization.
2)
CBR-V / CBT-H resistor types available in selected countries.
3)
Braking time = maximum allowed braking time in seconds at P
BRmax
every 120 seconds, at 40 °C (104 °F) ambient temperature.
00353783.xls K
Symbols
R
min
= minimum allowed brake resistor that can be connected to the brake chopper
R
max
= maximum allowed brake resistor that allows P
BRmax
P
BRmax
= maximum braking capacity of the drive, must exceed the desired braking power.
Ratings by resistor type CBR-V CBR-V CBR-V CBR-V CBR-V CBT-H
160 210 260 460 660 560
Nominal power (W) 280 360 450 790 1130 2200
Resistance (ohm) 70 200 40 80 33 18
Type R
min
R
max
P
BRmax
Selection table by resistor type
ACS355-
CBR-V / CBT-H
2)
Braking time
3)
x = E/U
1)
ohm ohm kW hp 160 210 260 460 660 560 s