Ch 8
Proma Compact THC SD baselines
Premier SPE, d-t, H-U, dir, and example voltage — verify on your machine.
Never touch THC arc-voltage terminals while energized. Raw plasma arc voltage can cause severe injury or death. Only a qualified person should connect arc-voltage wiring.
Record the starting condition, make one controlled change, and test again. Restore the original setting if the change did not help.
Machine-specific profiles, wiring diagrams, pin maps, motor tuning, and cut charts always override generic examples. Escalate when unsure.
Symptom
Need known-good Proma starting values before tuning height.
Quick checks
- ☐Record every current Proma value before editing
- ☐Confirm only one voltage input method (raw OR 1:50 divided — never both)
- ☐Exit tSt before any live cut
Fix
Premier baselines
Machine-specific records override these.
- SPE: 97–98 (if slow on warp, test toward 105–107; watch hunting)
- d-t: 0.9–1.0 s after main-arc detection
- H-U: 200 V default baseline for many setups — change only with evidence
- dir: often −1 but MUST verify with tSt — never assume
- tSt 1–10 with plasma OFF to prove UP raises / DOWN lowers torch
Example voltage (NOT universal)
Prior Premier example: ~98–99 V on 3/16" mild steel at ~61 A with a known-good Everlast setup. Your target must come from YOUR stable cut at correct physical height.
Display
Dashes = no input. Fast blink = pilot. Steady = main arc. Unstable/impossible = stop correction; check wiring/process.
Still stuck?
Text a photo — fastest path to a human who knows these tables.
We're in Glendale — same people who build the tables. Text beats voicemail.