本帖最后由 td456 于 2010-2-21 17:29 编辑 ! @) K6 t' H) u- O2 S9 j$ R
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When open a motor connection box, ! n% @. [' O3 C0 x. Z# p; NBeside three phase wires for the power,! I, c3 k# _, G6 ]6 n
We have another two wires marked as P1 and P25 y+ w/ ^: b) a9 G/ W+ C% T
What is that for(P1, P2)? ( e3 D2 D& r' u- c0 y) J* OMost of the time, they are not used. - G3 F! A; K/ @& ]- L* O2 @4 R6 N, u( [$ p- F- x# h: ~9 {/ U3 R
Thanks!
1#td456, M. {) t6 z ?; F
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Just for temperature monitoring!" z3 c( L/ }7 Y# P: R% o
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Good question!+ Z! h* C; X: ~% V
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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. # n4 a4 J }! ~7 h S9 i& O b" b% f* ?" P% H
Try the following website for details: ( J+ m' d$ O/ ?1 A+ nhttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf