Omron D4NL-1FFA-B Safety Door Switch
Omron D4NL-1FFA-B is a 24 VDC guard lock safety door switch designed to combine protective-door monitoring with controlled machine access. It uses a mechanical lock with solenoid release and a 2NC/1NO + 2NC contact configuration for guard and lock status switching. A Type 2 low-level coded interlock provides mechanical guard detection, while IP67 enclosure protection supports industrial machine installations. Operating speed ranges from 0.05 to 0.5 m/s, with 60 N minimum direct opening force and 10 mm minimum travel. The D4NL-1FFA-B belongs to the D4NL series within the guard lock safety switch range from Omron machine safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-1FFA-B |
Omron D4NL-1FFA-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 |
| 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-1FFA-B Guard Lock Safety Door Switch operates with a 24 VDC solenoid and uses a mechanical lock with solenoid release for controlled guard access. Its 2NC/1NO + 2NC contact configuration supports protective-door and lock status monitoring. A Type 2 low-level coded interlock provides mechanical guard detection, while IP67 enclosure protection supports industrial machine installations. The switch operates at speeds from 0.05 to 0.5 m/s and provides 60 N minimum direct opening force with 10 mm minimum travel.
Electrical specifications include 25 mΩ maximum contact resistance, a 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. Operating temperature extends from −10 to 55°C, ambient humidity is rated up to 95%. An orange LED supports 10 to 115 VAC/VDC indication. The 2NC/1NO + 2NC contact arrangement provides the primary configuration distinction within the supplied D4NL data. For a related D4NL model using 2NC/1NO + 1NC/1NO contacts, the D4NL-1EFA-B provides a closely related guard-lock configuration.
