Application
Uses
Example plastic machine industry:
Thanks to their high switching endurance, SIRIUS SC solid-state
switching devices are ideally suited for use in the control of
electrical heat. This is because the more precise the
temperature regulation process has to be, the higher the
switching frequency. The accurate regulation of electrical heat is
used for example in many processes in the plastic machine
industry:
• Band heaters heat the extrudate to the correct temperature in
plastic extruders
• Heat emitters heat plastic blanks to the correct temperature
• Heat drums dry plastic granules
• Heating channels keep molds at the correct temperature in
order to manufacture different plastic parts without defects
The powerful SIRIUS SC solid-state relays and contactors can
be used to control several heating loads at the same time. By
using a load monitoring module the individual partial loads can
easily be monitored, and in the event of a failure a signal is
generated to be sent to the controller.
Protecting the solid-state relays and solid-state contactors with
miniature circuit-breakers (MCB with type B tripping
characteristic)
Short-circuit protection and line protection with miniature circuitbreakers
is easy to achieve with SIRIUS SC solid-state relays
and solid-state contactors in comparison with designing load
feeders with fuses. A special version of the solid-state
contactors can be protected against damage in the case of a
short-circuit with a miniature circuit-breaker with type B tripping
characteristic. This allows the low-cost and simple design of
fuseless load feeders with full protection of the switching device.