Omron D4NL-1HFG-B Safety Door Switch
Omron D4NL-1HFG-B is a 24 VDC guard lock safety door switch designed for controlled access to protected machinery. It uses a solenoid lock with mechanical release, while the 3NC + 2NC contact configuration provides multiple normally closed switching paths for guard and lock status monitoring. A Type 2 low-level coded interlock supports mechanical guard-position detection, and the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. IP67 protection supports industrial machine safety installations where guard locking and access monitoring are required. The D4NL-1HFG-B belongs to the D4NL Series within the guard lock safety switch range from Omron industrial safety products for machine guarding applications.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-1HFG-B |
Omron D4NL-1HFG-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 | 3NC+2NC |
| 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-1HFG-B Guard Lock Safety Door Switch operates with a 24 VDC solenoid and uses solenoid locking with mechanical release for controlled access through protective machine doors. Its 3NC + 2NC contact configuration provides multiple normally closed switching paths for monitoring guard and lock conditions within the machine safety circuit. A Type 2 low-level coded interlock supports mechanical guard-position detection, while the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. IP67 enclosure protection supports industrial machine safety installations requiring guard locking and access monitoring. The important relationships for this model are solenoid lock, mechanical release, 3NC + 2NC contacts, protective-door detection and machine access control. These attributes establish clearer product relevance than adding low-value environmental or resistance specifications. The solenoid locking principle defines how the protective guard is secured, while the contact arrangement provides status information to the associated safety system. An orange LED supports 10 to 115 VAC/VDC indication, adding visible status information to the locking function. Within the D4NL family, lock method and contact arrangement are useful criteria for comparing individual models. For another D4NL guard lock model with a related H-series configuration, the D4NL-2HFG-B provides a relevant sibling model.
