本帖最后由 td456 于 2010-2-21 17:29 编辑 ; v, s8 U9 ]& Y0 g # W, i i# {! U6 qWhen open a motor connection box, 6 ~3 H9 `, W- V- F& e6 b! qBeside three phase wires for the power,: K, e% N( |6 U$ o
We have another two wires marked as P1 and P2( T8 D/ e& @% D0 }( E; F
What is that for(P1, P2)? 8 f9 i8 W7 v" K$ OMost of the time, they are not used. 2 T7 {' n9 b) h8 n* U4 X8 s; O" {5 u% s r$ K
Thanks!
Good question! : z- z( m# H3 L @* |% Q4 x" `/ [' ]1 s8 G) z' ^
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. - d- u0 o `' b" R2 Y& g : [ f( x7 D0 l: Y2 [Try the following website for details: & e' n l S2 K5 Q& {* Phttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf