Omron D4NL-4FFG-B Safety Door Switch
Omron D4NL-4FFG-B is a 24 VDC guard lock safety door switch using a solenoid lock with mechanical release for protective machine access. Its 2NC/1NO + 2NC contact configuration provides switching paths for monitoring guard and lock conditions within the machine safety circuit. An M20 conduit provides the wiring entry, while a Type 2 low-level coded interlock supports mechanical guard-position detection. IP67 protection suits industrial machine safety installations, and the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. The D4NL-4FFG-B belongs to the D4NL series within the guard interlock switch range from Omron machine safety products, supporting protective doors, machine guards and controlled access applications.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-4FFG-B |
Omron D4NL-4FFG-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+2NC |
| Conduit outlet/Connector | M20 |
| 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-4FFG-B Guard Lock Safety Door Switch uses a 24 VDC solenoid lock with mechanical release for controlling access to protected machine areas. Its 2NC/1NO + 2NC contact configuration provides normally closed and normally open switching paths for monitoring protective-door and lock status. An M20 conduit provides the machine wiring entry, while the Type 2 low-level coded interlock supports mechanical guard-position detection. IP67 enclosure protection supports industrial machine safety installations where protection against dust and moisture is required.
The direct opening mechanism provides 60 N minimum force with 10 mm minimum travel, and operating speed ranges from 0.05 to 0.5 m/s. An orange LED supports 10 to 115 VAC/VDC indication for visible status information. Solenoid locking with mechanical release is the defining functional relationship for this model and differentiates it from D4NL versions using mechanical locking with solenoid release. Together with its M20 conduit and contact arrangement, the D4NL-4FFG-B connects directly with guard lock safety switches, machine guards, protective access control and safety circuit monitoring. These relationships provide useful topical context without adding unnecessary specifications simply to increase content length. For the same M20 conduit and 2NC/1NO + 2NC contact configuration but using mechanical locking with solenoid release, the D4NL-4FFA-B provides the closest related model.
