IDEX Health & Science VS-606V7 Series - Manual (Page 148)

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• Sequence input connection with NPN/PNP
transistor
Sequence connection with NPN transistor (0V common)
When connecting sequence inputs (S1 to S7)
with transistor, turn the rotary switch SW1
depending on the polarity (0V common: NPN
side, +24V common: PNP side).
Factory setting: NPN side