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Inside PLC, we use photoelectric couplers to isolate between internal circuits and output transistors
Action Display
When photoelectric couplers drive, LED will be ON and the output transistors will be ON.
Response Time
The time interval that PLC from photoelectric couplers energizing (or cutting) to transistor ON (or OFF) is
below 0.2ms.
Output current
The current it outputs is 0.3A per point. But limited by the temperature rising, every 4 points current add
up to 0.5A.
Open circuit current
Below 0.1mA.
Example: the following is the wiring diagram of T-type PLC and stepper motor driver.
(Make sure the driver's photoelectric coupling input terminal has 8~15mA reliable current)
40
PLC
Stepper driver
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