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Brake resistors
The Lenze Smart Motor can be braked in a guided manner along a ramp. If large amounts of
regenerative energy are produced during braking, they must be absorbed by a brake resistor.
In addition to a brake resistor (10 W) mounted inside the terminal box, another brake resistor
(20 W) can also be connected externally alongside the terminal box via the terminal X4.
These brake resistors are mounted and parameterized at the factory.
NOTICE
Do not fall below the minimally connectable brake resistance of 180 Ω at the terminal "X4".
If an external brake is used, the power can be increased from 20 W to max. 40 W if the
medium speed is > 1000 rpm (arithmetic mean of the process speeds in relation to the motor
speed, without standstill).
Motor
MSEMA□□063-42
MSEMA□□080-32
Brake resistor
Internal
External
Order code
ERBU390R020W
Rated resistance
Ω
400
390
Rated power
W
10
20
Thermal capacity
kWs
0.100
0.250
Mass
kg
0.05
0.17
Terminal box dimensions with external brake resistor
Product extensions
Brake resistors
104
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