本帖最后由 td456 于 2010-2-21 17:29 编辑 % i. Q% b. k4 u" E7 f- U- m5 y: q# X" a, i; D: M& a5 ~
When open a motor connection box, ! a" L5 I: z/ BBeside three phase wires for the power," b3 e6 K6 | l1 i
We have another two wires marked as P1 and P2 2 v* S2 a* I4 CWhat is that for(P1, P2)? 0 Z' N: D; F' Y* z- d* t, n, pMost of the time, they are not used. & V# m- ?& \& T* y( i + ^# B6 A4 n2 ^9 GThanks!
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Just for temperature monitoring!- L. s2 D, @6 I' E5 V0 v9 H$ Y
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Good question!$ |7 ?. ?' v9 X' }+ X5 X4 W) X
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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. $ s, c2 b3 E" [6 H H: T: C 8 o# T& F b @' y* H. WTry the following website for details:: S3 |$ s }1 w& m http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf