Sharp JW-20CM User Manual page 50

From the previous page
Set LG (shield ground) switch
· For communication lines, use a coaxial cable.
· As coaxial cable is an unbalanced circuit,
ground its shield by turning "ON" the shield
ground switch.
• Make sure to provide a class-3 grounding for the GND terminal of the power supply module.
Without grounding the power supply module, the JW-20CM cannot become conductive with the
ground after turning "ON" the shield ground switch. (See page 7·2.)
• Prior to any electric welding around the JW-20CM, take out the coaxial cable from the JW-20CM.
While the coaxial cable is connected to the JW-20CM, any electric welding nearby the JW-20CM
will cause the welding current to the JW-20CM and may damage part of its circuit pattern.
8
Note: In case enough
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Turn "ON" shield ground
switch
JW-20CM
Turn "ON" shield Wrap around current
ground switch
FG
conductivity is not
established.
Coaxial cable
Turn "ON" shield ground
switch
JW-20CM
Coaxial cable
Note:
Electric welder
8 12
·
L T
(ON)
L G
(ON)
JW-20CM has a fuse element here.
Turn "ON" shield
ground switch
Rack etc.