Include your connector requirements and cable length in the inquiry. Confirm the supply scope before ordering.
Omron EE-SX671 Slot Sensor
L-shaped, 5 mm slot photomicrosensor with NPN open-collector output and a 4-pole connector. Operates on 5–24 VDC with selectable Light-ON / Dark-ON logic.
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EE-SX671 specifications
| Manufacturer / Model | Omron / EE-SX671 |
|---|---|
| Sensor Type | L-shaped through-beam slot photomicrosensor; non-modulated |
| Slot Width | 5 mm |
| Standard Target | Opaque object, 2 × 0.8 mm minimum |
| Supply Voltage | 5–24 VDC ±10%; ripple 10% peak-to-peak maximum |
| Output | NPN open collector; load current 100 mA maximum |
| Operating Mode | Dark-ON / Light-ON, selectable by wiring |
| Connection | 4-pole connector |
| Response Frequency | 1 kHz minimum (3 kHz average) |
| Light Source / Indicator | Infrared LED / red incident-light indicator |
| Operating Temperature | −25 to +55°C; no freezing or condensation |
| Protection | IP50 |
| Condition | New original product |
| Warranty | 12-month warranty from KWOCO |
Match the output, housing and connection
A similar part number does not guarantee interchangeability. Compare the electrical interface and mounting arrangement before replacing an existing sensor.
Related model differences
- EE-SX671: L-shaped housing, NPN output, connector version.
- EE-SX671P: L-shaped housing with PNP output.
- EE-SX671-WR 1M: NPN version with a pre-wired 1 m cable.
- EE-SX670: standard housing geometry; check mechanical fit before substituting.
Position detection and setup checks
The integrated emitter and receiver detect interruption of the beam across the slot. Typical application concepts include a machine-position flag or an opaque indexing tab, subject to checking travel, clearance and switching performance in the actual installation.
Choose the switching logic
Dark-ON activates the output when the beam is interrupted; Light-ON activates it when light reaches the receiver. Omron specifies Dark-ON with the L terminal open and Light-ON with L connected to the positive supply. Do not connect L to 0 V for Dark-ON. Follow the exact connector diagram and manufacturer instructions when wiring.
Check the installation
- Mechanical clearance: keep the moving target clear of the slot walls throughout its travel.
- Electrical match: check supply voltage, NPN input compatibility and connector terminal assignment.
- Switching speed: use the guaranteed 1 kHz minimum response rating for selection; 3 kHz is an average value.
- Environment: keep the optical path clean and assess ambient light and contamination.
- Commissioning: verify the input state with the target both present and absent, then test at operating speed.
Manufacturer references: EE-SX671 ratings and drawings ↗ · Model variants and connector notes ↗
Frequently asked questions
Is EE-SX671 the same as EE-SX671P?
No. EE-SX671 has NPN output; EE-SX671P has PNP output. Match the receiving input circuit and wiring before choosing a replacement.
Does this sensor need a separate reflector?
No. The emitter and receiver face each other across the slot. An opaque flag or object interrupts the beam; no separate reflector is required.
Does 5 mm describe the smallest detectable object?
No. It is the slot width. Omron specifies an opaque standard target of at least 2 × 0.8 mm. Confirm the actual target geometry and movement through the beam during commissioning.
Is a cable included with EE-SX671?
This is the connector version. Specify the mating connector and cable requirements in your inquiry and confirm the quoted supply scope. The EE-SX671-WR 1M is a different, pre-wired version.
Can I install it where water or oil can reach it?
IP50 does not provide water protection. Assess contamination, splashing and the installation enclosure before selecting this sensor; use a suitable alternative if the environment requires liquid protection.
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