3
Flatpack resistors
Technical data
Manual – Accessories
9
3
Flatpack resistors
A special resistor in flat design is available for MOVITRAC
®
LT.
Braking resistor type
Part number
LTE-B+
LTP-B
BW LT 100 002
1)
18208770
X
X
BW LT 050 002 55
2)
18218342
X
−
BW LT 033 005
2)3)
18201938
−
X
1) For sizes 2 and 3.
2) No UL approval.
3) For sizes 4 and 5.
X = available
− = not available
A braking resistor connected to the MOVITRAC
®
LT can be used to convert braking
energy generated by the motor into thermal energy. This braking resistor is suitable for
applications with a short deceleration ramp or a high mass moment of inertia.
Functionality
The resistor is installed in the frequency inverter.
•
The MOVITRAC
®
LT firmware protects the braking resistors BW LT against over-
load, so no external overload relays are required.
•
An internal fusible element ensures fault-free operation.
•
The BW LT 100 002 can be compactly mounted in the heat sink of the
MOVITRAC
®
LT in the IP20 design and in this way offers an integrated solution.
3.1
Technical data
Type
BW LT 100 002
BW LT 050 002
55
BW LT 033 005
Part number
18208770
18218342
18201938
100% cdf
200 W
200 W
500 W
Resistance value RBW
100 Ω ±10%
50 Ω ±10%
33 Ω ±10%
Max. ambient tempera-
ture
50
°
C
50
°
C
50
°
C
Degree of protection
IP20
IP55
IP55
Dimensions
L × W × H
mm
188 × 41 × 9
330 × 80 × 12
330 × 80 × 10
inch
7.402 × 1.614 ×
0.354
12.99 × 3.150 ×
0.472
12.99 × 3.150 ×
0.394
23540052/EN – 06/2018