Capacitor and buffer module:
Saving energy – without regenerative power supply,
by reusing energy!

Capacitor and buffer module

Today, everyone is talking about saving energy. Once only the topic of ecological groups, it has become an important factor that is considered in nearly any area of life and industrial sector. MOVIAXIS® also makes a contribution by offering various ways of handling fed-in or regenerated energy. Conventional power supply modules convert the braking energy into thermal energy in external or internal braking resistors. This is recommended for applications in which only a small part of the energy used has to be dissipated continuously.

In the variant as regenerative power supply module*, the energy is fed back into the power supply system. This is recommended for all applications with a large amount of braking energy that has to be dissipated continuously. Regenerative power supply is without doubt the smartest way of saving energy but also the most sophisticated way in terms of project planning and implementation.

A particularly interesting alternative to the two above described solutions is the capacitor module. The capcitor module is used to store the energy, which is fed into the DC link, in a capacitor bank actively and quickly. Excess energy is not dissipated via braking resistor until the capacitor bank is loaded. The energy is withdrawn from the capacitor bank and is reused in the system when an acceleration process is started. Intermediate storage and reuse of energy is particularly useful for multi-axis systems.

In this way, most applications in the medium power range can be implemented in an energy efficient manner without the excessive use of braking resistors or regeneration.

The buffer module is recommended for applications that require a guaranteed movement of machine parts within a safe range (return movement). A guaranteed amount of energy is stored, which can be used for a specific return movement even without mains voltage.

MOVIAXIS^®:  versatile – powerful – comprehensive

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