SMC Networks LECPA Series - Page 46

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About the photo coupler ON/OFF in the LECPA pulse input circuit during open corrector input connection
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1) NPN type
● Photo coupler: ON
Positioning unit Inside of the driver
Power supply NP+/PP+
NP-/PP-
● Photo coupler: OFF
Positioning unit Inside of the driver
Power supply NP+/PP+
NP-/PP-
2) PNP type
● Photo coupler: ON
Positioning unit Inside of the driver
Power supply NP+/PP+
NP-/PP-
● Photo coupler: OFF
Positioning unit Inside of the driver
Power supply NP+/PP+
NP-/PP-
Transistor: ON
Transistor：OFF
Photo coupler: ON
A current is passing
through the circuit.
A current is passing
through the circuit.
Photo coupler: OFF
Photo coupler: ON
Photo coupler: OFF
Transistor：ON
Transistor：OFF
No current is in the
circuit.
No current is in the
circuit.