本帖最后由 td456 于 2010-2-21 17:29 编辑 7 d3 U4 Q- H' @) h : \' c6 X/ [2 a# }" L* YWhen open a motor connection box, 0 ]0 |* r+ k1 L$ N
Beside three phase wires for the power,. S! G, ?' X: U4 q E2 i4 l8 V
We have another two wires marked as P1 and P2/ U3 Z0 P$ v& V, ?
What is that for(P1, P2)?6 J+ u7 I6 A! D
Most of the time, they are not used.1 e+ Z0 D1 W# `" q" E, i
Good question!- ^+ ~; m* c/ j* 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. 5 n. i+ o0 u1 {! l$ O- X$ [. `6 U p# N7 ?4 f u* p% D$ B
Try the following website for details:7 k$ W/ ^: @, L, h5 {+ Q$ ~ http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf