E3F-DS30P2 PNP Photoelectric Proximity Switch Sensor – Normally Closed User’s Guide
Overview
The E3F‑DS30P2 is a cylindrical photoelectric sensor designed for long‑range detection. It uses infrared light to sense objects and provides a PNP output, Normally Closed (NC) configuration. This means the output is active (connected to +V) until an object is detected, at which point the circuit opens.
Specifications
- Model: E3F‑DS30P2
- Type: Photoelectric proximity switch
- Output: PNP, Normally Closed
- Sensing distance: ~30 cm (depending on target surface)
- Supply voltage: 6–36 V DC
- Wiring: 3‑wire (Brown = V+, Blue = GND, Black = Output)
- Body: Cylindrical, threaded, with adjustable sensitivity ring
Wiring Guide
Note: Since it’s PNP NC, the black wire is normally connected to +V (active). When an object is detected, the output opens (inactive).
Installation
- Mounting: Secure the sensor using its threaded body and a bracket.
- Alignment: Aim the lens toward the detection zone.
- Wiring: Connect wires to your PLC, Arduino, or relay module as per the table above.
- Adjustment: Rotate the black sensitivity ring to fine‑tune detection distance.
Operation
- No object detected → Output (black wire) is high (+V, active).
- Object detected → Output opens (inactive).
- Controllers should be configured to read a high signal as “no detection” and low/open as “object detected.”
Applications
- Long‑range detection (up to 30 cm)
- Conveyor belt monitoring
- Position sensing in automated machinery
- Robotics and automation projects requiring PNP logic
Safety Notes
- Supply voltage must not exceed 36 V DC.
- Avoid reflective surfaces that may cause false triggers.
- Insulate exposed wires to prevent shorts.
- Test sensor response before integrating into critical systems.