Overview
The ifm OGH500 diffuse reflection sensor is a professional-grade photoelectric sensor engineered for non-contact position detection in demanding industrial environments. Built on ifm’s proven design, this sensor combines a robust stainless steel M18 barrel housing with intelligent background suppression to eliminate false triggers caused by varying surface reflectivity or changing ambient conditions. The 15–300 mm sensing range and programmable light-on/dark-on switching make it a flexible solution across multiple automation verticals.
Key Features
- Background Suppression: Intuitive pushbutton sensitivity adjustment with teach-in function to ignore far-field reflections and background clutter.
- Programmable Output Modes: Light-on and dark-on modes selectable via integrated pushbutton for flexible integration into existing control logic.
- Stainless Steel Housing: IP67-rated M18 threaded barrel design withstands washdown, splash, and harsh industrial atmospheres.
- Extended Detection Range: 15–300 mm working distance accommodates both short-range precise positioning and longer-range object spotting.
- PNP Output Stage: DC-sourcing logic compatible with standard industrial controllers and I/O modules (10–36 V DC supply).
- Low Power Consumption: 25 mA steady-state current draw minimizes wiring and power supply sizing overhead.
Technical Specifications
Core electrical and physical parameters ensure reliable installation and troubleshooting:
- Sensing Range: 15–300 mm (diffuse reflective mode)
- Supply Voltage: 10–36 V DC
- Output Type: PNP (DC-sourcing)
- Current Consumption: 25 mA (steady state)
- Load Capacity: 200 mA maximum
- Light Source: Red LED
- Switching Frequency: 11 Hz
- Housing: Stainless steel, M18 × 1 threaded
- Connector: M12 A-coded (standard industrial 4-pin)
- Protection Rating: IP67 (immersion-rated)
- Operating Temperature: −25 °C to +80 °C
- Physical Dimensions: M18 barrel, 72 mm length
- Response Behavior: Light-on / Dark-on programmable via pushbutton
Typical Applications
The OGH500 is widely deployed in manufacturing, logistics, and process automation where reliable object presence/absence detection is critical:
- Packaging Lines: Detection of filled bottles, boxes, or bags on high-speed conveyors with varying surface finishes.
- Parts Handling: Position verification of stamped, molded, or machined components with limited reflectivity variation.
- Level Sensing: Discrete point-level detection in bins, hoppers, or storage tanks when material surfaces differ.
- Sorting & Labeling: Trigger for label application or divert gates when material reflectance must be filtered from background.
- Washdown Zones: IP67 stainless housing rated for humid, wet, or corrosive factory environments.
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix 24 V DC I/O modules (with external 24 V supply converter if needed)
- Siemens S7-1200 / S7-1500 distributed I/O and analog input terminals
- Mitsubishi MELSEC-Q and FX series via standard 24 V DC I/O interface
- Omron CP-series and NX-series controllers with PNP-compatible input cards
- EtherCAT slave terminals and PROFINET gateways with DC-sourcing input support
- Standard 10–36 V DC industrial power supplies and fieldbus converters
- Teach-in wiring harnesses and M12 connector extensions (M12 A-coded standard)
Replaces / Drop-In Replacement For
- ifm OGT500 (standard diffuse sensor without background suppression, if background filtering is not required)
- Verify compatibility with your system integrator before ordering to ensure electrical and mechanical fit.
Works With
- Studio 5000 (Logix): PNP input mapped to standard discrete input modules; no special firmware required.
- TIA Portal (Siemens): DI_5P card or equivalent 24 V sourcing terminal input.
- GX Works (Mitsubishi): Standard PNP input module programming; teach-in configured via mechanical pushbutton.
- CX-Designer (Omron): DI/DO terminals with PNP-compatible sensing inputs.
- EtherNet/IP, PROFINET, CC-Link: Sensor output converts to discrete signal over fieldbus converters (opto-isolated relays or analog gateways).
- Safety Systems: Output signal suitable for Category 1 safety circuits when backed by redundant monitoring logic (verify with functional safety engineer).
