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60. Synchronizer
The synchronizer consists of two forked light barriers, which scan two coded discs supplying four different
signals per revolution of the machine:
The handwheel must be turned twice by the operator manually, with a connected sewing mechanism.
All possible combinations of the synchronizer sensor must be covered during the process.
The revolutions counter is reduced in the display.
By way of a visual check, a segment consisting of bitmaps appears on the screen to indicate the current
position of the sensor.
The current position area is displayed in black (although the following illustration shows all the areas in
different colors, only the actual area will be displayed in black during the test, for example: the red area is
displayed in black while the other areas are white).
Synchronizer
OK
End = key „i“
3 * turns of hand wheel
Black: stop area for „needle raised“
Red: no stepping motor for sewing operation is allowed to move here
Green top: area for the zigzag stepping motor
Green bottom: area for the feed stepping motor
The change-over from red to green is the trigger signal for the corresponding stepping motor.
An evaluation window (OK or Error) is displayed after completion of the test.
Press the button „i“ = End (end of test with possibility to go to the next test)
The current test can be interrupted with the „i“ button.
If the „Full test“ mode is activated, the next test will be automatically executed after completion of the test.
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