Page 4 (14) Vacon
VaconPlc Phone: +358-201-2121 Fax: +358-201-212205
http://www.vacon.com
Brake choppers and resistors
2 TECHNICAL DATA
2.1Standard resistors for partial
use
Brake resistors for partial use for Vacon
CX_4, Vacon CX_5 and Vacon CX_6
1)
–
frequency converters can be chosen from
the tables below.
3s
7s
Pp
Pave,10
Figure 2.1-1 Shape of the power
pulse
When other resistors are used, make sure
that the resistance is higher than the mini-
mum resistance defined. The power han-
dling capacity must be sufficient for the
application.
Vacon Brake resistor Energy P
p
P
ave,10
P
p
P
ave,10
P
ave
Min. cable
type type handling
kW kJ kW kW kW kW kW mm
2
500 V 400 V
M3: ≤3 BR100R0,4 41 6,4 4,1 4,1 2,7 0,17 1,5
M4B:4-7,5 BR75R1,0 55 8,5 5,5 5,4 3,5 0,25 1,5
M4B: 11 BR36R1,0 114 17,6 11,4 11,2 7,3 0,75 1,5
M4:2,2-5,5 BR36R1,0 114 17,6 11,4 11,2 7,3 0,75 1,5
M5B:15-18,5 BR18R2 230 35 22 22,3 15 0,95 6
M5:7,5-15 BR12R2,6 340 53 34 34 22 1,4 6
M5B:22 BR12R2,6 340 53 34 34 22 1,4 6
M6:18,5-45 BR6R5,1 690 106 69 68 44 2,9 16
M7:55-90 BR3R10,2 1380 212 138 135 88 5,8 185
M8:110-160 2 x BR3R10,2
4)
2760 424 276 270 196 18 2 x 185
M9:200-250 3 x BR3R10,2
4)
4140 636 414 406 264 27 3 x 185
M10:315-400 4 x BR3R10,2
4)
5520 848 552 541 352 36 4 x 185
Table 2.1-1 Vacon BR_ standard resistors for partial use, CX_4 and CX_5 ranges.
P
p
= peak power
P
ave,10
= 10 s average power
P
ave
= continuous power
1.3 Classes of use
a) Partial use (most common)
The process requires regular or irregular
rapid decelerations, stops or reversings.
b) Continuous use
The motor continuously brakes with
constant torque
c) Combination use
The motor continuously brakes with
variable torque
d) DC-link voltage smoothing
The brake resistor smooths overvoltage
spikes from the supply
1)
Marking CX_, etc. refers to all Vacon series; CX, CXL and CXS.
