Omron D4NL-4CFG-B Safety Door Switch
Omron D4NL-4CFG-B is a 24 VDC guard lock safety door switch for monitoring and controlling access through protective machine doors. Its solenoid lock with mechanical release provides electrically controlled guard locking, while the 2NC + 1NC/1NO contact configuration supports guard and lock status monitoring. An M20 conduit provides the wiring entry, and a Type 2 low-level coded interlock supports mechanical guard-position detection. IP67 protection suits industrial machine safety applications, with 60 N minimum direct opening force and 10 mm minimum travel. The D4NL-4CFG-B belongs to the D4NL series within the machine guard lock switch range from Omron industrial safety products, connecting protective access with machine safety control.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-4CFG-B |
Omron D4NL-4CFG-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+1NC/1NO |
| 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-4CFG-B Guard Lock Safety Door Switch combines a 24 VDC solenoid lock with mechanical release for controlled access to guarded machinery. Its 2NC + 1NC/1NO contact configuration provides multiple switching paths for monitoring protective-door and lock conditions. An M20 conduit provides the wiring connection, while the Type 2 low-level coded interlock supports mechanical guard-position detection. IP67 enclosure protection makes the switch suitable for industrial machine safety installations where dust or moisture may reach the device.
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. The important selection context is created by the solenoid locking method, mechanical release, M20 conduit and 2NC + 1NC/1NO contact arrangement. Together, these characteristics connect the D4NL-4CFG-B with guard lock safety switches, machine access control, protective-door detection and safety circuit monitoring. The solenoid controls the locking function, while the mechanical release provides the corresponding release method defined for this model. For another M20 D4NL switch using the same solenoid lock with mechanical release but a 1NC/1NO + 1NC/1NO contact arrangement, the D4NL-4AFG-B provides a closely related option within the same guard lock series.
