L1 L2 L3 (+) B
U V W
Easy Start Guide
13. Brake Resistor Connection
Page 13
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Before commencing, confirm that the Inverter and
all cables are completely isolated from the power
supply, have been isolated for at least 5 minutes
and that the motor is not turning.
Bosch Rexroth EFC 5610 Series Inverter
Parameter
Description
How to set
b0.00
Access to additional parameters
Default is 0 for Basic Parameters. Set to
to enable Advanced Parameters.
2
C0.25
Overvoltage prevention mode
Default is
for Stall overvoltage protection enabled, resistor braking enabled; default is
3
required for this example.
13.1 Relevant parameters for Dynamic Braking
13.2 Connecting the Resistor
A wiring diagram is shown in the illustration
opposite. Connect the brake resistor to the B
and (+) Terminals on the Inverter. The order of
the connections is unimportant.
The braking resistor may get hot during
operation. Ensure that it is mounted in a
suitable position at least 10cm away from other
items.
It is important that a resistor of the correct
rating is used. Consult the manufacturer’s
manual or product listing on InverterDrive.com
for further information.
B
(+)
High inertia loads can cause overvoltage trips
during deceleration and lead to “OE-3" error
messages. In many cases, the solution is to
increase the deceleration time to compensate.
However, if the application requires it, dynamic
braking can be enabled to maintain or reduce
deceleration times by absorbing the energy
generated by such loads.
Then, the “brake chopper” within the Inverter is
enabled. This detects excessive braking
energy and redirects it to the resistor when
required.
A Brake Resistor is first installed to absorb
braking energy and dissipate it as heat. The
resistor
be correctly sized for both the
Inverter and application.
must
Heat Resistant
Cable
B
(+)
