Omron D4BS-2AFS Safety Door Switch
Omron D4BS-2AFS is a G1/2 safety door switch designed for mechanical monitoring of protective doors and movable machine guards. Its 1-conduit construction provides a defined cable entry for machine wiring, while a Type 2 low-level coded interlock supports mechanical guard-position detection. The direct opening mechanism provides 19.61 N minimum force with 20 mm minimum travel, helping separate the safety contacts when the guard is operated. IP67 enclosure protection supports industrial machine installations, and the switch operates with guard movement from 0.1 to 0.5 m/s. The D4BS-2AFS belongs to the D4BS Series within the machine safety door switch range from Omron industrial safety products for protective access monitoring.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4BS-2AFS |
Omron D4BS-2AFS Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-conduit type |
| Conduit outlet/Connector | G1/2 |
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.1 m/s to 0.5 m/s |
| Direct opening force | 19.61 N min |
| Direct opening travel | 20 mm min |
| Contact resistance | 25 mΩ max. |
| Rated insulation voltage (Ui) | 600 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction 10 to 55 Hz, 0.65 mm single amplitude |
| Shock resistance | Destruction: 1,000 m/s2 min. Malfunction: 300 m/s2 min |
| Ambient operating temperature | −40 to 80°C |
| Ambient operating humidity | 95% max |
| Weight | Approx. 285 g |
The Omron D4BS-2AFS Safety Door Switch uses a 1-conduit construction with a G1/2 connection for mechanical monitoring of protective machine doors. Its Type 2 low-level coded interlock establishes the mechanical relationship between the switch and movable guard, while the direct opening mechanism supports positive contact separation when the guard is operated. The switch provides 19.61 N minimum direct opening force with 20 mm minimum travel and supports operating speeds from 0.1 to 0.5 m/s. IP67 enclosure protection supports installation around industrial machinery where protection against dust and moisture is required. The main product relationships are safety door switching, G1/2 conduit wiring, guard-position detection, direct opening operation and machine access monitoring. These attributes provide stronger model context than adding weight, vibration or other secondary specifications that do not help identify the product. Its 1-conduit format also gives installers a clear wiring characteristic when comparing D4BS variants. When the protective guard changes position, the mechanical interlock communicates that condition through the switch to the associated safety control architecture. This makes the D4BS-2AFS relevant to machine guards, protective doors and industrial safety circuits. For another 1-conduit model in the same D4BS family, the D4BS-4AFS provides a related configuration.
