. z: C: w4 L' a: d* B+ @( v# R, b6 JWhen open a motor connection box, ( `. X& A3 ?: U6 l; Y6 M; }4 GBeside three phase wires for the power, / j% i' f* {* ^' i$ I# m6 U AWe have another two wires marked as P1 and P2 % ?3 T! c( Y% ]/ ?" ?0 H3 BWhat is that for(P1, P2)?4 r6 I3 i8 }! Q, [2 y
Most of the time, they are not used. 5 y, A8 b/ r# [$ A' b, f" i % B8 t( S: S- k+ j4 X& xThanks!
- s) N( x q" E" c# d3 \+ VI think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. ) [5 c! Z& w+ A; ^ 2 d+ L$ W# P) v% b2 N9 j2 q* RTry the following website for details: ' b* V# e0 \" t% s. ^http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf