Hi All,
I recently purchased an old TOS milling machine and am in the process of setting it up. I have stumbled across and electrical issue and I'm hoping some here might be able to assist.
I'm running the mill off a rotary phase converter and everything function correctly except for the main motor (or more correctly, the switchgear associated with the main motor).
Now I have enough electrical/electronics knowledge to be dangerous, but there are a couple of aspects of the setup I'm unsure about :
1. What is the purpose of the switch (circled in red) swapping phases?
2. What is the purpose of the rectifier section (also circled)? That has me baffled as it seems to be feeding DC to the AC/motor.
3. What are those white ceramic things in the attached photo? The are designated as Px in the circuit.
I've attached the full circuit schematic as a pdf.
I recently purchased an old TOS milling machine and am in the process of setting it up. I have stumbled across and electrical issue and I'm hoping some here might be able to assist.
I'm running the mill off a rotary phase converter and everything function correctly except for the main motor (or more correctly, the switchgear associated with the main motor).
Now I have enough electrical/electronics knowledge to be dangerous, but there are a couple of aspects of the setup I'm unsure about :
1. What is the purpose of the switch (circled in red) swapping phases?
2. What is the purpose of the rectifier section (also circled)? That has me baffled as it seems to be feeding DC to the AC/motor.
3. What are those white ceramic things in the attached photo? The are designated as Px in the circuit.
I've attached the full circuit schematic as a pdf.
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