Omron D4NL-2FFA-B Safety Door Switch
Omron D4NL-2FFA-B is a 24 VDC guard lock safety door switch for protective machine access and guard status monitoring. Its mechanical lock with solenoid release controls guard release, while the 2NC/1NO + 2NC contact configuration provides multiple switching paths for the associated safety circuit. A G1/2 conduit supports machine wiring, and a Type 2 low-level coded interlock provides mechanical guard-position detection. The direct opening mechanism delivers 60 N minimum force with 10 mm minimum travel, while IP67 protection suits industrial installations. The D4NL-2FFA-B belongs to the D4NL Series within the machine guard lock switch range from Omron machine safety products, supporting protective doors, access control and safety interlocking.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-2FFA-B |
Omron D4NL-2FFA-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 | Mechanical lock Solenoid release |
| Contact configuration | 2NC/1NO+2NC |
| 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-2FFA-B Guard Lock Safety Door Switch combines a 24 VDC solenoid with mechanical locking and solenoid release for controlled access to guarded machinery. Its 2NC/1NO + 2NC contact configuration provides multiple switching paths for monitoring protective-door and lock conditions. A G1/2 conduit provides the wiring connection, while a Type 2 low-level coded interlock supports mechanical guard-position detection. The direct opening mechanism provides 60 N minimum force with 10 mm minimum travel, and IP67 protection supports industrial machine safety installations. The key model relationships are mechanical guard locking, solenoid release, 2NC/1NO + 2NC contacts, G1/2 wiring and protective access monitoring. These functional attributes provide stronger model relevance than secondary specifications that contribute little to product selection. The mechanical lock secures the guard, while the solenoid controls release and the contact arrangement provides status paths to the associated safety circuit. An orange LED supports 10 to 115 VAC/VDC indication for visible operating status. Within the D4NL Series, lock method and contact configuration provide useful distinctions between closely related variants. For another G1/2 D4NL model with the same 2NC/1NO + 2NC contact arrangement but using solenoid locking with mechanical release, the D4NL-2FFG-B provides a closely related configuration.
