Omron D4NS-9BF Safety Door Switch
Omron D4NS-9BF is a 1-conduit safety door switch with an M12 connector and slow-action 2NC contacts for protective machine guard monitoring. The 2NC contact configuration provides normally closed switching paths for the machine safety circuit, while the connector design supports direct electrical connection. A Type 2 low-level coded interlock detects guard position, and IP67 protection supports industrial machine installations. The direct opening mechanism provides 60 N minimum force for standard types and 80 N minimum for high pull-force types, with 10 mm minimum travel. The D4NS-9BF belongs to the D4NS series within the safety door switch range from Omron machine safety products for protective access monitoring.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NS-9BF |
Omron D4NS-9BF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type, with connector |
| Contact configuration | Slow-action,2NC |
| Conduit outlet/Connector | M12 connector |
| 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 | <Standard type> 60 N min.; <High pull-force type> 80 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: 300 m/s2 min |
| Ambient operating temperature | −30 to 70°C (with no icing) |
| Ambient operating humidity | 95% max |
| Weight | Approx. 96 g |
The Omron D4NS-9BF Safety Door Switch combines a 1-conduit design with an M12 connector and slow-action 2NC contacts for protective machine guard monitoring. The 2 normally closed contacts provide safety switching paths for detecting the position of a protective door. A Type 2 low-level coded interlock supports mechanical guard-position detection, while IP67 enclosure protection suits industrial machine safety installations where dust or moisture may be present.
The direct opening mechanism provides 60 N minimum force for standard types and 80 N minimum for high pull-force types, with 10 mm minimum travel. Operating speed ranges from 0.05 to 0.5 m/s. The M12 connector is an important model-specific attribute because it distinguishes this version from D4NS safety door switches using threaded conduit entries. Combined with the 2NC contact arrangement and direct opening operation, it establishes clear relationships with machine guards, safety interlocks, protective-door monitoring and industrial safety circuits. This model therefore provides useful entity relevance through its connection type, contact function, interlock type and guard-monitoring purpose rather than secondary specifications. The connector-based design is relevant where compatible machine wiring is required. For another M12 connector model within the D4NS series but with a slow-action 1NC/1NO contact configuration, the D4NS-9AF provides the closest related configuration.
