3 braking operation with external brake resistor, Braking operation – Lenze 8400 BaseLine Manual User Manual
Page 95
Braking operation
Braking operation with external brake resistor
8
95
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 inhibit 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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