Braking operation
Braking operation with external brake resistor
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EDS84ABD302 EN 4.0
8.3 Braking operation with external brake resistor
To decelerate greater moments of inertia or with a longer operation in generator mode an
external brake resistor is required. It converts braking energy into heat.
The brake resistor is connected if the DC-bus voltage exceeds the switching threshold. This
prevents the controller from setting pulse i nhibit through the ”Overvoltage” fault and the
drive from coasting. The external brake resistor serves to control the braking process at any
time.
The E84AVBD...4 controllers are equipped with a brake chopper. The brake chopper
switches in the external brake resistor.
ƒ Adapt the switching threshold to the mains voltage (C00173/C00714, see software
manual).
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