Lenze DSD - Manual (Page 184)

7 Applications
7.21 Dimension the multi-axis system
184
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Energy exchange between two drives
[7-179] Energy exchange between two drives
• Other drive axes in the multi-axis system must be able to absorb recovered energy.
• In case of a quick stop for all drive axes, a brake chopper is usually required in addition since no
drive axis is able to absorb the regenerative power.
Buffering braking energy
[7-180] Energy storage in the capacitor
• The braking energy is stored in a capacitor in order to make it available again in the next accel-
eration or lifting process.
• Compared to a regenerative power supply module, the costs are lower, but the storage capacity
of the capacitor is limited.
• Energy storage is cost-effective for fast cycled drives (e.g. cross cutters).
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Power loss in inverter
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Power loss in motor
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Mechanically generated power by braking processes
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Mechanically available power
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Power loss in inverter
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Mechanically generated power by braking processes
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