JUKI LK-1941, Engineer'S Manual

Page: 68 / 126

−
63
−
3) How to check each test program No.
①
CP-1 (Input signal check)
State of input of switches and sensors is indicated on the 8 LEDs.
The table below is the list of LED indication, and you can understand to which LED each switch or each
sensor is assigned.
Letters in the table of LED indication
• EMS ........Temporary stop switch
• PDET ........Feed reference signal The signal occurs one time during one rotation of the sewing machine
when the needle bar angle is between 125˚ and 155˚.
• TG ........TG signal The signal occurs 45 times (an interval of 8˚) during one rotation of the sewing
machine.
• UDET ........Sewing machine up-position signal The signal occurs one time during one rotation of the
sewing machine when the needle bar angle is between 34˚ and 48˚.
• DDET ........Sewing machine down-position signal The signal occurs one time during rotation of the
sewing machine when the needle bar angle is between 80˚ and 123˚.
• AUDET........Sewing machine upper dead point position signal The signal occurs one time during one
rotation of the sewing machine when the needle bar angle is between 5˚ and 30˚.
＊
The aforementioned needle bar angles are those detected from the encoder of the main motor.
＊
Input line Nos, 7 and 8 correspond to the key switch of the operation box provided with AW-2D and
PGM -7.
WINDER COUNTER SPEED Y SCALE X SCALE PATTERN NO. SEWING THREADING
1 READY RESET FORWARD BACK P1 P2 P3
2 SELECT (
↓
) SAFETY SW
3 EMS PRESSER (R) START PRESSER (L)
4 AIR PRESSURE SW X ORIGIN Y ORIGIN
5 PDET TG UDET DDET AUDET
6 THERMOSTAT
7 BOBBIN TAKE OUT BOBBIN WIND EMPTY BOBBIN AIR KEY SELECT (
↑
)
8
9 THREAD BREAK
10
Input
line
No.
Item which LED lights up
1
OFF ON
2) How to finish test mode
Turn OFF the
power switch.
Turn OFF the power.
Explanation
Step
Operation method Indication