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Sunday, June 27, 2021

Second Relay Array Ordered

I have ordered a second relay array.  I decided to order it because it will help facilitate a second stage cooling unit to be added without having to wait for it to arrive.

There are several aspects of the Freeze Dryer that needs to be controlled by relays.

The compressor needs to be cycled in order to keep it from overheating.

The compressor fan needs to be cycled independent of the compressor.  If the compressor is off, the fan may still need to be on in order to continue removing heat from the condenser coil.

The fan in the trap needs to be cycled.

The fan in the chamber needs to be cycled

The compressor needs to be cycled

The second stage cooling system may not be needed, but if it is, it will need a relay.

Wednesday, June 9, 2021

Process Control Logic Framework Constructed

Framework for processing logic has been created.  

Process indicators are updating based on sensor feedback.