Emotron FDU Series User Manual

CG Drives & Automation 01-7491-01r0 Options 203
13.6 Brake chopper
All AC drive sizes AC drives with cable inlet on short side
can be fitted with an optional built-in brake chopper. The
brake resistor must be mounted outside the AC drive. The
choice of the resistor depends on the application switch-on
duration and duty-cycle. This option can not be after
mounted.
The following formula can be used to define the power of
the connected brake resistor:
Where:
P
resistor
required power of brake resistor
Brake level V
DC
brake voltage level (see table 45)
Rmin minimum allowable brake resistor
(see table 46, table 47 and table 48)
ED effective braking period. Defined as:
t
br
Active braking time at nominal braking
power during a 2 minute operation
cycle.
Maximum value of ED = 1, meaning continuous braking.
WARNING!
The table gives the minimum values of the
brake resistors. Do not use resistors lower
than this value. The AC drive can trip or
even be damaged due to high braking
currents.
Ta b l e 4 5
Supply voltage (V
AC
)
(set in menu [21B]
Brake level (V
DC
)
220–240 380
380–415 660
440–480 780
500–525 860
550–600 1000
660–690 1150
P
resistor
=
(Brake level V
DC
)
2
R
min
x ED
ED =
120 [s]
t
br
Table 46 Brake resistor FDU48 V types
Typ e
Rmin [ohm] if
supply 380–415
V
AC
Rmin [ohm] if
supply 440–480
V
AC
FDU48-
003
43 50
-004 43 50
-006 43 50
-008 43 50
-010 43 50
-013 43 50
-018 43 50
-025 26 30
-026 26 30
-030 26 30
-031 26 30
-036 17 20
-037 17 20
-045 17 20
-046 17 20
-058 15.5 19
-060 10 12
-061 10 12
-072 10 12
-074 10 12
-088 7.5 9
-090 3.8 4.4
-105 6.5 8
-106 3.8 4.4
-109 3.8 4.4
-142 3.8 4.4
-146 3.8 4.4
-171 3.8 4.4
-175 3.8 4.4
-205 2.7 3.1
-210 2.7 3.1
-244 2.7 3.1
-250 2.7 3.1
-293 2.3 2.8
-295 2.3 2.8
-300 2 x 3.8 2 x 4.4
-365 1.8 2.2
-375 2 x 3.8 2 x 4.4
-430 2 x 2.7 2 x 3.1
-500 2 x 2.7 2 x 3.1
-600 3 x 2.7 3 x 3.1
-650 3 x 2.7 3 x 3.1
-750 3 x 2.7 3 x 3.1
-860 4 x 2.7 4 x 3.1
-1K0 4 x 2.7 4 x 3.1
-1K15 5 x 2.7 5 x 3.1
-1K25 5 x 2.7 5 x 3.1
-1K35 6 x 2.7 6 x 3.1
-1K5 6 x 2.7 6 x 3.1
-1K75 7 x 2.7 7 x 3.1
-2K0 8 x 2.7 8 x 3.1
-2K25 9 x 2.7 9 x 3.1
-2K5 10 x 2.7 10 x 3.1

Emotron FDU Series Specifications

General

Brand	Emotron
Model	FDU Series
Category	DC Drives
Language	English