Omron D4NL-2AFA-B4 Safety Door Switch
Omron D4NL-2AFA-B4 is a 24 VDC guard lock safety door switch with a G1/2 conduit connection for protective-door interlocking. Its mechanical lock with solenoid release controls guard access, while the 1NC/1NO + 1NC/1NO contact configuration provides switching for door and lock monitoring. A Type 2 low-level coded interlock supports mechanical guard-position detection, and IP67 enclosure protection suits industrial machine installations. The switch operates from 0.05 to 0.5 m/s and provides 60 N minimum direct opening force with 10 mm minimum travel. The D4NL-2AFA-B4 belongs to the D4NL series within the guard interlock switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-2AFA-B4 |
Omron D4NL-2AFA-B4 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Solenoid voltage/ indicator | Solenoid: 24 VDC, Orange LED: 10 to 115 VAC/VDC |
| Lock and release types | Mechanical lock Solenoid release |
| Contact configuration | 1NC/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-2AFA-B4 Guard Lock Safety Door Switch operates with a 24 VDC solenoid and combines a mechanical lock with solenoid release for protective-door interlocking. Its 1NC/1NO + 1NC/1NO contact configuration supports guard and lock status switching, while the G1/2 conduit provides the cable-entry connection. A Type 2 low-level coded interlock provides mechanical guard-position detection. IP67 enclosure protection supports industrial machine installations, with operating speeds from 0.05 to 0.5 m/s and 60 N minimum direct opening force with 10 mm minimum travel.
Electrical characteristics include 25 mΩ maximum contact resistance, 300 V rated insulation voltage, 100 MΩ minimum insulation resistance and a 2 × 2 mm minimum contact gap. Rated frequency is 50/60 Hz. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Shock resistance reaches 1,000 m/s² minimum for destruction and 100 m/s² minimum for malfunction. The specified operating temperature extends from −10 to 55°C, ambient humidity reaches 95% maximum. An orange LED supports 10 to 115 VAC/VDC indication. Its G1/2 conduit and contact configuration distinguish this model within the supplied D4NL data. For another D4NL model with the same 1NC/1NO + 1NC/1NO contact arrangement, the D4NL-4AFA-B provides a closely related configuration.
