本帖最后由 td456 于 2010-2-21 17:29 编辑 . x1 [0 _# n5 L* H
$ s- L9 U* \) y" A _) [$ D& S
When open a motor connection box, " M0 w- W0 K. |
Beside three phase wires for the power,7 s) \/ y( A( l
We have another two wires marked as P1 and P2) l5 H9 H( v- [: C+ M; A4 Y. M
What is that for(P1, P2)? ; w6 E( R: v4 j- HMost of the time, they are not used.7 `2 K% i2 x. x; U! h2 `1 a$ m
* }4 t! V. X6 Q8 e/ \, s
Thanks!
Good question! - C7 o* o! ?4 b7 J6 X& K; o5 O+ N1 ~2 x5 X+ t
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. ( \( t+ r8 w4 s5 j& g6 R2 r, J- U
Try the following website for details:$ G# z+ e) _0 F6 t1 |% w7 } http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf