本帖最后由 td456 于 2010-2-21 17:29 编辑 9 T Q. z4 j3 T4 @6 V# N
& u3 { I7 y* j3 OWhen open a motor connection box, 6 A. k; h" l* q
Beside three phase wires for the power,0 C, L0 w, s3 Y3 n& o
We have another two wires marked as P1 and P2 # w. ?% n' s* k- F9 wWhat is that for(P1, P2)?& s0 i/ m4 \- J; c6 g! o
Most of the time, they are not used. n; f6 ] I" \ / C1 D* J- p' s eThanks!
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Just for temperature monitoring!: @+ f0 v# u. i8 L& L2 I1 n. z
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***************** $ _! E6 Q/ B" W* ~1 CWelcome to 华人电气网
Good question!( f$ C5 i& K2 @( p# l8 G6 q" _
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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. 4 S2 Z( A+ g( ]1 p; s 9 a$ U- T5 P! ?$ DTry the following website for details: $ t. m* V$ A7 Chttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf