Omron EE-SX677-WR — Slot Photomicrosensor, 5 mm, NPN, Cable
SKU: EE-SX677-WRUSD 10.00
Close-mount slot photomicrosensor, 5 mm slot, NPN open collector, light/dark switchable, DC 5-24 V, 1 m pre-wired cable.
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Product Overview
The Omron EE-SX677-WR is a slot-type photomicrosensor in the EE-SX67 series: a U-shaped emitter and receiver molded into a small black PBT body with a 5 mm slot between them. Any opaque flag, tab, or part at least 2 x 0.8 mm that passes through the slot breaks the beam and triggers the output. It is the right pick when the moving part is small, the installation has to fit in a tight panel, and the controller side wants a clean ON / OFF pulse instead of an analog reading.
The -WR suffix marks this variant as pre-wired with a 1 m oil-resistant cable end, distinct from the connector-based EE-SX677 base which uses an EE-1001 / EE-1006 harness. Pre-wired fits fixed-cabinet builds where the cable routes straight into a wire duct; the connector version fits modular builds where the harness is pre-built and pulled through conduit. The output is NPN open-collector — use the EE-SX677P-WR 1M for a PNP sourcing version. Mode selection is via the L terminal: leave open for Dark-ON (beam broken = ON); short to +V for Light-ON (beam clear = ON).
Where it fits
Common uses are label-edge detection on a dispenser, paper-presence sensing in a printer or copier, cam-flag index confirmation on a small assembly dial, coin or token validation, and tab-position checks on a feeder track. Anywhere a thin interrupter fits through a 5 mm gap and the system needs a single digital pulse per passage, this sensor fits.
Before ordering
The EE-SX677-WR is rated IP50 — sealed against dust and light touch, but not designed for direct water spray. For an IP67 slot microsensor in the same 5 mm class, look at the EE-SX95 family instead. Confirm the supply is a regulated 5 to 24 VDC; voltage spikes above 26 VDC will damage the output transistor.
Key Features
- EE-SX67-series slot photomicrosensor with 5 mm slot
- R-type close-mount body (right-side mounting tab)
- IR LED 940 nm source, IR-receiver phototransistor
- NPN open-collector output, 100 mA max load
- Light-ON / Dark-ON selectable via L terminal wiring
- DC 5 to 24 V supply ±10%, 35 mA current draw
- 1 m pre-wired oil-resistant cable (-WR suffix)
- Response frequency 1 kHz min, 3 kHz typical
- Standard target 2 x 0.8 mm opaque, differential 0.025 mm
- Black PBT housing, polycarbonate optical window
- IP50 protection (splash-resistant, not water-submersible)
- SKU: EE-SX677-WR
- Series: EE-SX67 (slot photomicrosensor)
- Voltage: 5 TO 24 V
- I/O: 100 I/O
Best-Fit Applications
- Label-edge and registration-mark sensing on a label dispenser or printer
- Cam-flag index confirmation on a small assembly dial or indexing table
- Tab-position check on a feeder track for small parts
- Coin or token validation in a vending or parking machine
- Paper or sheet presence detection in a copier or document feeder
- Beam-interrupt pulse on a packaging counter or counting wheel
Buying Checklist
- Choose EE-SX677-WR for the pre-wired 1 m cable version — pick the bare EE-SX677 if the cabinet uses EE-1001 connector harnessing instead.
- Choose EE-SX677P-WR 1M for a PNP (sourcing) output instead of NPN.
- Choose EE-SX674-WR for the same family with a different body shape (close-mount T-tab).
- Choose EE-SX676-WR for an F-shape top-mount flat body in the same family.
- Verify the supply is regulated 5 to 24 VDC — overvoltage damages the output transistor.
- Use the EE-SX95 family if the install needs IP67 water-jet protection; the EE-SX67 family is IP50 only.
Technical Specifications
| Series | EE-SX67 (slot photomicrosensor) |
|---|---|
| Slot Width | 5 mm |
| Output Type | NPN open collector, 100 mA max load |
| Operating Mode | Light-ON / Dark-ON selectable via L terminal |
| Light Source | Infrared LED 940 nm |
| Supply Voltage | DC 5 to 24 V ±10%, ripple 10% max |
| Current Consumption | 35 mA max |
| Response Frequency | 1 kHz min, 3 kHz typical |
| Connection | Pre-wired 1 m oil-resistant cable (-WR suffix) |
| Indicator | Red LED lit when light is received |
| Operating Temperature | -25 to +55 degC |
| Protection Rating | IP50 |
Resources & Downloads
FAQ for EE-SX677-WR
What does the -WR suffix mean?
The -WR suffix on any EE-SX67 sensor marks it as a pre-wired lead-out version with a 1 m oil-resistant cable, rather than the connector version that uses a separate EE-1001 / EE-1006 harness. So EE-SX677 base = connector, EE-SX677-WR = pre-wired cable. Same sensor, different cable exit.
What is the difference between EE-SX674-WR and EE-SX677-WR?
Both are pre-wired 5 mm NPN cable sensors in the EE-SX67 family. The difference is the body shape: EE-SX674-WR is the close-mount body with the mounting tabs at the standard top position; the EE-SX677 is the R-type with the mounting tab configured for a right-side cable exit. Pick the body that matches the panel cutout and cable-routing direction — the electrical specs are otherwise the same.
Can this sensor detect a transparent object?
No. The EE-SX677-WR is a through-beam slot sensor that needs an opaque target to break the beam. For thin transparent film or clear-glass detection, look at a retro-reflective sensor with a polarized MSR filter (like the E3Z-R61 family) or a through-beam sensor specifically tuned for thin films.
How do I switch between Light-ON and Dark-ON?
The L (mode) terminal controls the operating mode. Leave it open or floating for Dark-ON (output ON when the beam is broken). Short the L terminal to the +V supply to switch to Light-ON (output ON when the beam is clear). Confirm the connection before powering up the first time.
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