本帖最后由 td456 于 2010-2-21 17:29 编辑 . [4 k, {' V$ r0 s; a5 u3 @
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When open a motor connection box, ) Z1 O7 j' Y! b2 t
Beside three phase wires for the power, 1 g* t4 u B' _: z+ h2 d8 L fWe have another two wires marked as P1 and P2 1 O5 f$ d! X, S' \What is that for(P1, P2)?0 H3 |( H1 S# K
Most of the time, they are not used. ! d) }! _( y+ A1 v 5 [) k/ l1 T' U, t1 LThanks!
Good question!6 f" n! b5 `4 s c8 f
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I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. , ~4 i+ p D8 X% b3 T+ g : G8 }# F$ z% I4 [( G. tTry the following website for details:' K6 E. g2 {& ]5 Q- [% ~3 m http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf