− 32 −
6. Automatic compensation of neutral point of the pedal sensor
Whenever the pedal sensor, spring, etc. are replaced, be sure to perform following operation :
1) Pressing switch 2, turn ON the power switch.
2) Indication on the screen will be as illustrated in 6.
At this time, the value indicated in the 7 segments
of four figures is the compensation value.
(Caution) At this time, the pedal sensor does not
work properly if the pedal is depressed. Do
not place the foot or any object on the
pedal. Warning sound “peeps” and the
compensation value is not displayed.
3) Turn OFF the power switch, and turn ON the power
switch again to return to the normal mode.
7. Bobbin thread remaining amount detection device, AE
When using the AE device, the optional IO p.c.b. is
necessary.
Connect solenoid cord 1 attached to the side of the
AE device to 2P plug (red) 2 attached to the IO p.c.b.
for use.
(Caution) Even when connecting to 14P plug from
the machine head, the device does not
work. So, be careful.
2
1
6
2
3
1
2
8. Connection of the pedal of standing-work machine
1) Connect the connector of PK70 1 to connector
2 (CN39 : 12P) of SC-500.
2) Tighten the cord of PK70 together with other cords
with cable clip band 3 attached to the side of the
box after passing it through the cable clamp.
(Caution) Be sure to turn OFF the power before
connecting the connector.
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