本帖最后由 td456 于 2010-2-21 17:29 编辑 3 \3 e% C3 Q2 Y1 _9 j$ R
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When open a motor connection box, + c3 u! l: t2 q' }; pBeside three phase wires for the power, ! F! `7 O' B+ F9 _- S) UWe have another two wires marked as P1 and P22 d7 z. w& K5 n/ @) \4 ?) r
What is that for(P1, P2)? 0 U! f% C0 f) j) ]8 J6 N# kMost of the time, they are not used. 8 }% D& ^ z# \% m& b& o 7 f# R& E: a: Z! i: GThanks!
1#td456 % V. z, \( o8 p / J( [, G3 t4 q# ]$ V: g8 l3 n6 U/ j7 k8 E4 [# K" p
Just for temperature monitoring! g5 ]# n$ R& |) A' _( B" N% z
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Good question! 7 @1 J! l9 N t! H" i3 ?% j$ Q. a& c
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. M+ G' l4 b) O# L4 Y 0 k. e. x: L5 }8 WTry the following website for details:/ [2 V7 {% H# |( ~7 J: O% C http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf