Omron D4NS-6BF Safety Door Switch
Omron D4NS-6BF is a 2-conduit safety door switch with slow-action 2NC contacts and a G1/2 conduit configuration for machine guard monitoring. The 2NC contact arrangement provides normally closed switching paths for protective-door safety circuits, while the 2-conduit design supports flexible wiring requirements. A Type 2 low-level coded interlock provides mechanical guard-position detection, and IP67 enclosure protection supports industrial 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-6BF belongs to the D4NS series within the protective door switch range from Omron machine safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NS-6BF |
Omron D4NS-6BF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 2-Conduit type |
| Contact configuration | Slow-action,2NC |
| 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-6BF Safety Door Switch combines a 2-conduit construction with G1/2 connections and slow-action 2NC contacts for protective-door monitoring. Its two normally closed contacts provide switching paths for machine safety circuits, while the 2-conduit design supports wiring arrangements that require separate cable entries. A Type 2 low-level coded interlock provides mechanical guard-position detection. IP67 enclosure protection supports industrial machine installations where the safety door switch may be exposed to dust or moisture.
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. For model selection, the important relationships are the 2NC contact arrangement, 2-conduit construction, G1/2 connection and positive opening function. These attributes connect the D4NS-6BF with machine guard monitoring, protective-door detection, safety interlocking and industrial safety control circuits. The dual conduit arrangement distinguishes it from 1-conduit D4NS variants and can support different machine wiring layouts. When the guard is operated, the direct opening mechanism supports mechanical separation of the normally closed contacts. For another 2-conduit G1/2 D4NS model that increases the contact arrangement from 2NC to 3NC, the D4NS-6DF provides the closest related configuration.
