本帖最后由 td456 于 2010-2-21 17:29 编辑 7 S5 E* r: S j" b: R! H: M0 t3 } / f# P% e* ]8 {1 n1 u: V2 U3 PWhen open a motor connection box, " }! R% m# A9 Y# Y
Beside three phase wires for the power,0 {( L9 b& @# K2 k0 z3 f
We have another two wires marked as P1 and P2/ ^/ c/ Y$ u2 g2 S; M4 Y
What is that for(P1, P2)?' Y( r0 g( m1 h% c `5 J
Most of the time, they are not used.0 E! F, u3 \$ _+ j$ W3 _
& s9 C+ T1 @' Y0 ~( D5 ?
Thanks!
Good question!' g' s. W7 O0 g/ n, D6 G+ {0 b) b4 b
' D0 t- s" ?( t2 i2 \I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. $ G8 t# |, z1 [! o+ `0 q$ ` 7 w4 [7 _4 {; y) } ZTry the following website for details: - }9 u+ o' z6 e1 Y7 e/ \8 Ohttp://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf