Samsung WF-R1061 Service Manual page 15

10) Unbalance detecting & laundry balance positioning system
Just before the hydrating process and just after reversal rotation for balancing laundry position, this
function is carried out
The initial 6 sec is the period of reversal rotation for balancing laundry position , Drum rotates 50rpm
for initial 6 sec
Next 12 sec, the rotation increases the speed from 50 rpm to 95 rpm slowly
During the next 8 sec, drum rotates at the speed of 95 rpm, the sensor decides the degree of laundry
unbalance with TACHO data which is attached to motor
If the degree of unbalanced laundry is over 6 times to default value, laundry balancing system carryies
out feed back process 3 times.
Unbalance detecting & laundry balance positioning system
500rpm
220rpm
laundry scattering
95rpm
11) R.P.M control
The rotating motor enables the magnetics( i.e generator) to generate magnetic fl ux in proportion to
r.p.m, magnetic fl ux induced by coil sensor in the opposite side produces the wave like the fi gure below
to dΦ/dt and via rectangular wave generating circuit, the waves reaches MICOM and micom controls
r.p.m with the pulse, count and cycle inputted by program.
<COIL electrical wave at both ends>
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20 sec
unbalance
detecting range
V (VOLT)
210rpm
12
490rpm
Vp
T (HOUR)