Omron D4NS-6DF Safety Door Switch
Omron D4NS-6DF is a 2-conduit safety door switch with slow-action 3NC contacts and G1/2 conduit connections for protective machine guard monitoring. Its 3NC contact configuration provides multiple normally closed switching paths for integration with machine safety circuits, while the 2-conduit construction supports flexible wiring arrangements. A Type 2 low-level coded interlock provides mechanical guard-position detection, and IP67 enclosure protection supports industrial operating conditions. Direct opening force is 60 N minimum for standard types and 80 N minimum for high pull-force types, with 10 mm minimum opening travel. The D4NS-6DF belongs to the D4NS series within the safety interlock switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NS-6DF |
Omron D4NS-6DF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 2-Conduit type |
| Contact configuration | Slow-action,3NC |
| Conduit outlet/Connector | G1/2 |
| 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-6DF Safety Door Switch uses a 2-conduit construction with G1/2 connections and slow-action 3NC contacts for protective machine guard monitoring. Three normally closed contacts provide multiple switching paths for integration with machine safety circuits, while the 2-conduit arrangement supports wiring layouts requiring separate cable entries. A Type 2 low-level coded interlock provides mechanical guard-position detection, and IP67 enclosure protection supports industrial installations where dust or moisture may be present.
The direct opening mechanism provides 60 N minimum force for standard versions and 80 N minimum for high pull-force versions, with 10 mm minimum travel. Operating speed ranges from 0.05 to 0.5 m/s. Its main selection attributes are the 3NC contact arrangement, 2-conduit design, G1/2 connection and positive opening function. These characteristics establish clear relationships with safety door monitoring, machine guard detection, access protection and safety control circuits. The additional normally closed contact differentiates this model from D4NS versions using 2NC switching while retaining the same basic guard-detection function. When the protective door is opened, the direct opening mechanism supports mechanical contact separation for the safety circuit. For a closely related 2-conduit G1/2 D4NS model using slow-action 2NC contacts instead of 3NC, the D4NS-6BF provides the closest related configuration.
