本帖最后由 td456 于 2010-2-21 17:29 编辑 3 u6 M8 J4 [+ m( o; D0 e , O. p+ V) S2 w: P) S h/ \When open a motor connection box, 9 \' m- x. g }- l# I% A2 Q, \
Beside three phase wires for the power, * ^" F2 }) E( uWe have another two wires marked as P1 and P2" `6 g2 y% s3 M4 W2 L
What is that for(P1, P2)?2 H6 C! ?" h0 A5 F$ Z2 j
Most of the time, they are not used. . u' |9 z9 A* z. x& {4 t+ k ; F* N- i# ~, \' ]8 V4 _6 }Thanks!
Good question! , [0 ^: x, |6 F F- O* X( I- P- u) |! l& j: X
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. # {+ B- m3 E" ]. `* X; X7 h+ {/ P1 @
Try the following website for details: 4 N7 w' t: T \( T$ Qhttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf