20
Controls
Key 6: Calling up the pre-set stitch length
Diode on = large stitch length, diode off = small stitch length.
This button can have the following functions assigned depending on the drive
system implemented and by way of changes to the parameter values:
P74 ED-L PF 321
Parameter Funktion Parameter Funktion
786
Function = Standard
This function can be switched off
under Parameter 786.
845
22 = Speed limitation n11 , Flip Flop 2
(Parameter 186 must be set to "On".
Key 7: If this key is operated, the second thread tension is switched on.
If this key is pressed for longer than about 2 seconds, the machine moves to the
threading position - the needle is raised and the motor start inhibitor is activated
(sewing threads are not trimmed).
If the key is operated again, the motor start inhibitor is deactivated again
(For drive system P74 ED-L = standard)
For drive system PF 321, the value 93 is set under parameter 846 (= standard).
Key 8: EMERGENCY KEY
Needle is raised without trimming, the thread clamp is opened, the thread
tension is released, the presser foot raised and the motor start inhibitor activated.
Deactivation the motor safety lock
For drive system P74 ED-L - click the button 'Scroll'.
For drive system PF 321 - click the button 'E' (under parameter 847, the value 24 is
set = standard)
The method for setting parameters is described in the settings manual, and
may only be carried out by certifi ed professionals!
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