Portable Plasma Torch Height Controller Manual (F1620)
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The proximity switch of THC is NPN(or PNP) type open-drain proximity switch.
User can set it by the switch on voltage divide board. If the 2-bits switch is “ON”,
user should use NPN proximity switch. If the 2-bits switch is “OFF”, user should use
PNP proximity switch. The default set of the 2-bits switch is “ON”.
NOTICE: in the new version of hardware, the 2-bits switch is canceled. User
can use NPN or PNP type open-drain proximity switches directly only by changing
the “L09” parameter if needed.
Figure 3.7 The proximity switch view upon voltage divide board
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