Protect People. Protect Productivity.
Omron Safety Components Lineup
From automotive, semiconductors, food & beverage to logistics—Omron’s globally certified safety components deliver both maximum safety and uninterrupted productivity. Precision Tools Service provides complete support from selection to implementation.

Product Lineup
3.1 Non-Contact Safety Door Switch — D40A-2
A compact non-contact safety door switch ideal for washdown environments, delivering PLe safety and stable magnetic detection.
Key Features:
- Up to 30 devices can be connected in series
- PLe / Category 4 compliance
- IP66/IP67 + Ecolab certified
- Laser-marked housing (no labels)
- Reliable magnetic sensing
- NPN/PNP compatible


3.2 Guard Lock Safety Door Switch — D4SL-N
World’s smallest, high-strength guard lock switch designed for robot cells and safety fences, featuring a durable metal head and 6-contact configuration.
Key Features:
- 1,300 N locking force
- Metal operation head for durability
- Slide key prevents operator entrapment
- Removable terminal block for easy maintenance
- Compact footprint for tight spaces
3.3 Safety Relays — G9SE / G7SA
Slim, easy-to-wire safety relays that consolidate multiple safety inputs and support PLe/Cat.4 architectures in compact control panels.
Key Features:
- Slim 17.5 / 22.5 mm housing
- Screwless terminals reduce wiring time
- LED diagnostics for quick troubleshooting
- Supports PLe / Category 4 / SIL3
- Ideal for E-stops, door switches, rope pulls


3.4 Safety Light Curtain — F3SG-SR
A versatile safety light curtain designed for long-range detection, fast troubleshooting, and stable operation in harsh industrial environments.
– PTS inventory is also available, enabling short lead times.
Key Features:
- Detection range up to 20–30 m
- ABI (Area Beam Indicator) for quick alignment
- Reliable detection in dusty or oily conditions
- IO-Link / Bluetooth options for maintenance
3.5 Emergency Rope Pull Switch — ER6022
A rugged rope pull switch for long conveyor systems, enabling emergency stops from any point along the line.
Key Features:
- Up to 200 m rope length
- Left / right / center actuation
- Tension indicators for correct setup
- E-stop integrated models available
- Durable housing for industrial use


3.6 Emergency Stop Switch — A22NE-PD / A22NE-P / A22E
A robust emergency stop switch family offering high reliability, vibration resistance, and washdown options for demanding applications.
Key Features:
- Lock detection (A22NE-PD)
- Push-In Plus terminals for high vibration durability
- IP69K option for washdown environments
- Standard A22E for cost-effective installations
- Bright actuator for clear visibility
3.7 Related Controller — NX-Safety Controller & Automation Platform
A high-performance safety controller within the Sysmac platform, enabling scalable and fully integrated machine safety control with maximum flexibility.
Key Features:
- Integrates safety control into machine automation via NX-series EtherCAT Couple
- One Safety CPU controls up to 128 Safety I/O Units
- Flexible I/O configuration: Safety I/O can be freely mixed with standard NX I/O
- 4- or 8-point Safety Input Units, including direct connection to OMRON non-contact switches and single-beam sensors
- 2- or 4-point Safety Output Units, with up to 2.0 A breaking current on 2-point models
- IEC 61131-3 compliant, supporting reusable safety programs using POUs

Example Safety System Combinations
Real-world configurations using Omron Safety Components
Use Case 1 – Robotic Cell with Hazardous Motion (Pick & Place / Assembly)
A compact robot cell with hazardous moving parts where operators frequently enter for adjustments, tooling changes, and cleaning.
Recommended Device Combination:
- D40A-2 Non-contact Door Switch: Detects door status reliably even when alignment is imperfect.
- D4SL-N Guard Lock: Keeps the gate locked until the robot arm reaches a safe stop state.
- F3SG-SR Light Curtain: Adds a secondary protective boundary at openings or part-feeding areas.
- A22E Emergency Stop: Mounted on the robot cell frame for immediate access.
- G7SA Relay (compact): Suitable for single-cell safety implementations.
Key Benefits:
- Non-contact detection reduces mechanical wear and maintenance.
- Guard lock ensures safe stop before gate opening.
- Light curtain provides additional protection without blocking visibility.
- Ideal for small automated cells and retrofits.
Use Case 2 – Conveyor Line with Long Travel Zones
Long-distance conveyor systems where operators walk alongside equipment, requiring “stop from anywhere” functionality.
Recommended Device Combination:
- ER6022 Rope Pull Switch: Allows operators to trigger an emergency stop from any point up to 200 m.
- F3SG-SR Light Curtain: Secures loading/unloading zones or transfer points.
- A22NE-P Emergency Stop: Installed at fixed inspection or operator stations.
- G9SE Safety Relay: Handles safety inputs with simple wiring and LED diagnostics.
Key Benefits:
- Rope pull provides comprehensive, intuitive emergency-stop coverage.
- Light curtain prevents entry into hazardous automatic-transfer zones.
- Compact safety relay simplifies troubleshooting and minimizes downtime.