Omron D4NL-2EFG-B Safety Door Switch
Omron D4NL-2EFG-B is a 24 VDC guard lock safety door switch that uses a solenoid lock with mechanical release for controlled machine access. Its 2NC/1NO + 1NC/1NO contact configuration supports protective-door and lock status monitoring, while the G1/2 conduit provides the wiring connection. A Type 2 low-level coded interlock detects guard position and supports machine safety control when a protective door is operated. IP67 enclosure protection suits industrial environments, and the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. The D4NL-2EFG-B belongs to the D4NL series within the guard interlock switch range from Omron machine safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-2EFG-B |
Omron D4NL-2EFG-B Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Solenoid voltage/ indicator | Solenoid: 24 VDC, Orange LED: 10 to 115 VAC/VDC |
| Lock and release types | Solenoid lock Mechanical release |
| Contact configuration | 2NC/1NO+1NC/1NO |
| Conduit outlet/Connector | G1/2 |
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.05 to 0.5 m/s |
| Direct opening force | 60 N min |
| Direct opening travel | 10 mm min |
| Contact resistance | 25 mΩ max. |
| Rated insulation voltage (Ui) | 300 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Shock resistance | Destruction 1,000 m/s2 min. Malfunction 100 m/s2 min. |
| Ambient operating temperature | −10 to 55°C |
| Ambient operating humidity | 95% max |
| Weight | Approx. 370 g |
The Omron D4NL-2EFG-B Guard Lock Safety Door Switch uses a 24 VDC solenoid lock with mechanical release for controlled access to protected machine areas. Its 2NC/1NO + 1NC/1NO contact configuration provides normally closed and normally open switching paths for guard and lock status monitoring. A G1/2 conduit supports machine wiring, while the Type 2 low-level coded interlock provides mechanical detection of the protective-door position. IP67 enclosure protection supports use around industrial equipment where the safety switch may be exposed to dust or moisture.
The direct opening mechanism provides 60 N minimum force and 10 mm minimum travel, supporting positive mechanical contact separation during guard operation. Operating speed ranges from 0.05 to 0.5 m/s. An orange LED supports 10 to 115 VAC/VDC indication, adding visual status information to the guard locking function. The combination of solenoid locking and mechanical release differentiates this model from D4NL versions that use mechanical locking with solenoid release. This makes the lock operating method, contact arrangement and G1/2 conduit important selection points when matching a guard lock switch to a machine safety circuit. For applications requiring the same 2NC/1NO + 1NC/1NO contact configuration but a mechanical lock with solenoid release, the D4NL-2EFA-B provides a closely related alternative.
