本帖最后由 td456 于 2010-2-21 17:29 编辑 , n2 B3 g1 l% t( Q0 y& E0 M4 l& ]- u
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When open a motor connection box, ! c- L1 Z! T( Y& u" v
Beside three phase wires for the power,6 q. o7 r9 S* I7 ]6 E
We have another two wires marked as P1 and P2 , c- l! }$ ]/ T! f. i) jWhat is that for(P1, P2)? : m2 x+ f. G; h; w) `) B* ~. uMost of the time, they are not used. & {, w ?6 e, x5 b: d; ?6 L. z3 B1 c( L% N
Thanks!
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Just for temperature monitoring! : ?: g" j' ~: }' B8 g4 d3 a : W$ Z% F" e) u$ v$ n # Q6 c6 ^5 u. k- r, K) m9 ^- ]/ v) b; ~3 [9 Y4 d8 K: x5 ?
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Good question! / [( z5 d* _ r! n # e' @4 f6 S9 h. j$ ZI think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. / n& I) i8 w0 f: c2 \6 m2 @ & Z5 ?# \4 u- R, K/ D1 _$ c2 I8 LTry the following website for details: 4 k$ N, q3 A% s( X \! B0 B& [/ Ihttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf