Omron E2S-W21 2M Proximity Sensor
Omron E2S-W21 2M is a compact square, unshielded proximity sensor with a 2.5 mm sensing distance and a 0 to 1.9 mm setting distance. It uses a DC 2-wire NO output, a pre-wired 2 m cable, and a 12 to 24 VDC supply. Ferrous metal is the specified detectable object, with an iron 15 × 15 × 1 mm standard sensing object. Response frequency is 1 kHz minimum, leakage current is 0.8 mA max., control-output current is 3 to 50 mA max., and differential travel is 10% max. of sensing distance. An orange operation indicator and IP67 protection are listed. The E2S-W21 2M is listed among compact proximity sensors from Omron automation sensors.
| Brand | Omron |
| Product | Proximity Sensors |
| Model Number | E2S-W21 2M |
Omron E2S-W21 2M Proximity Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensor | Compact Square Type |
| Sensing Distance | 2.5 mm |
| Setting Distance | 0 to 1.9 mm |
| Output Configuration | DC 2-Wire |
| Operation Mode | NO |
| Connection | Pre-wired 2 M Cable |
| Differential Travel | 10% max. of sensing distance |
| Detectable Object | Ferrous metal |
| Standard Sensing Object | Iron, 15 × 15 × 1 mm |
| Response Frequency | 1 kHz min. |
| Current Consumption | 0.8 mA max. |
| Control Output Load Current | 3 to 50 mA max. |
| Indicator | Operation indicator (orange) |
| Protection Circuit | Output short-circuit protection, Surge suppressor |
| Ambient Temperature Range | Operating: −25 to 70°C , Storage: −40 to 85°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 90% , Storage: 35% to 95% (with no condensation) |
| Material | Polyarylate resin |
| Degree Of Protection | IP67 |
| Weight | Approx. 10 g |
The Omron E2S-W21 2M Proximity Sensor uses a compact square, unshielded sensing body with a 2.5 mm sensing distance and a 0 to 1.9 mm setting distance. It provides a DC 2-wire NO output through a pre-wired 2 m cable and operates from 12 to 24 VDC. Ferrous metal is the specified detectable object, with an iron 15 × 15 × 1 mm standard sensing object. Response frequency is 1 kHz minimum, leakage current is 0.8 mA max., control-output current is 3 to 50 mA max., and differential travel is 10% max. of sensing distance. An orange operation indicator is provided, while output short-circuit protection and surge suppression are specified.
Operating conditions for the E2S-W21 cover -25 to 70°C, while storage extends from -40 to 85°C. Operating humidity is 35% to 90%, and storage humidity is 35% to 95%. Polyarylate resin is listed as the construction material, and IP67 is the specified protection level. The 2.5 mm unshielded sensing configuration is paired with DC 2-wire NO switching and the pre-wired cable. No additional electrical values beyond those stated in the source are added here. For the same W-style compact square sensor with the same 2.5 mm sensing distance and DC 2-wire NO operation but a 1 m cable, see E2S-W21 1M.
