Using a relay
When the signal that Sensorfact is reading is generated by a relay, the setup involves a pulse counter and a two-wire cable (red and black) connected as follows:
- Red Wire: Connects to the O/C input inside the pulse counter.
- Black Wire: Connects to the ground.
Using an Existing Sensor
PNP Output Sensors
If the signal comes from an existing sensor with a PNP output, follow these steps:
- A splitter cable will be provided.
- Unplug the sensor.
- Connect the splitter cable to the sensor's input.
- Plug the other connector on the splitter to the sensor.
- This ensures that the pulse counter can read the signal correctly.
NPN Output Sensors
For sensors with an NPN output, an additional piece of hardware is supplied to properly isolate the NPN signal between the PLC and the pulse counter. This hardware prevents potential voltage mismatch issues that could damage the PLC. Steps to install:
- Unplug the sensor.
- Connect the cable from the sensor to the additional hardware.
- Connect the other cable from the additional hardware to the sensor.
Splitting PNP Signal:
Splitting NPN Signal:
Using a Sensorfact Photocell Sensor
When using Sensorfact’s standard photocell sensor, the setup is straightforward as the sensor is pre-connected to the pulse counter. Here’s how to install and adjust it:
- Installation: Place the photocell along the production line where it will detect objects passing by.
- Power Connection: Plug the sensor’s power cable into a wall socket.
- Adjusting Sensitivity:
- Locate the gray screw terminal on the side of the sensor.
- Adjust it to modify the sensor’s sensitivity.
- Watch the orange LED: it should light up when an object is detected and turn off when the object is removed.
- Ensure the sensor isn’t activated by background objects (e.g., a wall opposite a conveyor belt).
This setup ensures that the photocell accurately detects objects without false positives.
