本帖最后由 td456 于 2010-2-21 17:29 编辑 2 M( N5 T3 W) r" e% ?, ]) `* a& l; e ?6 F: P
When open a motor connection box, . J& k+ [% |9 ]8 G: d$ x9 E! t
Beside three phase wires for the power,0 h; W8 T4 v, X4 W. U0 B0 K- P- c* K
We have another two wires marked as P1 and P2 $ d ?1 G p0 u7 LWhat is that for(P1, P2)?. F4 B4 b# k" i4 Z N
Most of the time, they are not used. & C4 c7 ]7 i1 {" O* |* V 4 f( K# V; }2 f4 |/ K9 j7 cThanks!
Good question! ' M7 T! m& h6 ]$ f' y Y ; S% l" x1 i& c( `I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. ! U% Q: Y7 g) |1 H 1 S" P5 h0 ]. k8 U) I- cTry the following website for details: 2 N' C9 D; `% i( u" { [http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf