Omron D4NS-2CF Safety Door Switch
Omron D4NS-2CF is a G1/2 2NC/1NO safety door switch for mechanical monitoring of protective doors and movable machine guards. Its 1-conduit construction provides a G1/2 wiring connection, while the slow-action 2NC/1NO contact configuration combines 2 normally closed paths with 1 normally open path. A Type 2 low-level coded interlock supports mechanical guard-position detection, and the direct opening mechanism provides 10 mm minimum travel. IP67 protection supports industrial machine safety installations. The D4NS-2CF belongs to the D4NS Series within the safety door switch range from Omron industrial safety products, connecting protective access, machine guarding, contact monitoring and safety circuit control.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NS-2CF |
Omron D4NS-2CF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type |
| Contact configuration | Slow-action,2NC/1NO |
| 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-2CF Safety Door Switch uses a G1/2 conduit connection with slow-action 2NC/1NO contacts for mechanical monitoring of protective machine doors. Its 2 normally closed contacts provide safety switching paths, while the normally open contact supplies an additional switching path for the associated control circuit. A Type 2 low-level coded interlock mechanically detects guard position and establishes the relationship between actuator movement and switch operation. The direct opening mechanism supports positive safety-contact separation, providing 10 mm minimum travel. Direct opening force is 60 N minimum for standard types and 80 N minimum for high pull-force types. Operating speed ranges from 0.05 to 0.5 m/s, while IP67 enclosure protection supports industrial machine safety installations. The key product relationships are G1/2 wiring, 2NC/1NO contacts, safety door interlocking, machine guard detection and protective access monitoring. These functional attributes provide stronger product context than secondary weight or electrical resistance specifications. Contact configuration and conduit format also provide practical comparison criteria within the D4NS family. The switch therefore connects mechanical guard movement with both safety and status switching functions. For the same G1/2 conduit format with a simpler slow-action 2NC contact configuration, the D4NS-2BF provides a closely related model.
