The Omron E3Z-LT61 is a through-beam photoelectric sensor delivering a 60 m detection range via a visible red laser diode (655 nm). It operates on 12–24 VDC and provides an open collector (NPN) output rated at 100 mA max load current. The emitter draws 15 mA, receiver 20 mA, for a total 35 mA current consumption.
Output polarity — check your input card
The E3Z-LT61 uses an NPN open collector output that sinks current to common. If your panel uses PNP-sourcing sensors like the E3Z-LL81, rewiring of input common and load connections is required. Load power supply voltage maxes at 26.4 VDC, and load current at 100 mA — enough for a direct PLC input but not for driving a relay coil without an interposing interface.
Sensing distance and light source
Through-beam at 60 m means the emitter and receiver are separate housings; the beam must be aligned and unobstructed. The red LD (655 nm) produces a visible spot approximately 5 mm diameter at 3 m, which helps with rough alignment using a white card or reflective tape. JIS/IEC Class 1 and FDA Class 2 laser rating means no laser safety signage is required in most industrial environments, though standard light-curtain precautions apply.