Omron E3ZM-T81 5M Photoelectric Sensor
Omron E3ZM-T81 5M is a PNP through-beam photoelectric sensor specified for object sensing across a 15 m distance. The sensing arrangement uses the E3ZM-T81-L emitter and E3ZM-T81-D receiver, with an infrared LED establishing the optical path between them. The PNP output communicates the switching state to compatible PLC and machine-control circuitry, while Light-ON and Dark-ON operation supports different control requirements. The sensor operates from 10 to 30 VDC and includes 5 m pre-wired cables for extended electrical routing. The emitter and receiver each consume up to 20 mA, while response time is specified at 1 ms maximum. The E3ZM-T81 5M provides longer fixed wiring within the 15 m PNP through-beam sensor range across Omron Industrial Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3ZM-T81 5M |
Omron E3ZM-T81 5M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Square type |
| Sensing Distance | 15 m |
| Emitter Number | E3ZM-T81-L 5M |
| Receiver Number | E3ZM-T81-D 5M |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired cable length 5m |
| Current Consumption | Emitter: 20 mA max. Receiver: 20 mA max. |
| Light Source (Wavelength) | Infrared LED |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 1 ms max. |
| Degree Of Protection | IP67 |
| Material | SUS316L |
| Material Lens | Methacrylate resin |
| Weight | 150 g |
The Omron E3ZM-T81 5M Photoelectric Sensor uses through-beam sensing across a specified 15 m distance with separate E3ZM-T81-L emitter and E3ZM-T81-D receiver units. An infrared LED establishes the optical path between the two sides, while interruption of that beam changes the PNP output communicated to compatible industrial control inputs. Both sensing units operate from 10 to 30 VDC and consume up to 20 mA each. Light-ON and Dark-ON operation provides alternative switching behavior, while response time is specified at 1 ms maximum. The supplied configuration uses 5 m pre-wired cables, extending the available electrical routing distance from the sensing positions to the machine-side connections. SUS316L is specified for the housing, while methacrylate resin is listed for the optical material.
For an Omron PNP through-beam sensor requiring long-range sensing together with extended fixed wiring, the relevant model is the E3ZM-T81. Its separate emitter and receiver establish the stated 15 m optical path, while the 5 m cables provide substantially more routing distance than the shorter 2 m version. The 10 to 30 VDC supply and 20 mA maximum current consumption for each sensing unit define the supplied electrical requirement. A 1 ms response supports quick state changes as targets pass through the beam. For the same PNP through-beam arrangement with shorter 2 m pre-wired cables, see E3ZM-T81 2M.
