
Circuit Diagrams
54
Circuit diagram
Version 11/05/2016
91-191 454-95 Part 4
Control
de
vice A1
Inputs
Bart
ack
Single stitch
Single stitch
(Knee switch)
Bobbin thread
monitor
Transmit
ted light
sensor
Transmit
ter
Transmit
ted light
sensor
Receiv
er
Optional:
Second
knee switch
Bobbin thread
alarm
Start inhibitor
Needle position
change-o
ver
Ke
y field