Wenglor HT77PA3 Infrared Light Photoelectric Sensor
Wenglor HT77PA3 is an infrared light photoelectric sensor with 1,500 mm sensing range and 300 Hz switching frequency. The HT77PA3 belongs to the PK Series and is part of the Wenglor Photoelectric Sensor range for industrial automation in India. It features 300–1,500 mm setting range, <5% switching hysteresis, 10–30 V DC supply, 1,700 µs response time, PNP NC and PNP NO outputs, M12 × 1; 4-pin connection, plastic PBT housing, IP67 protection, 40 mA current consumption at 24 V DC, and 126 g weight.
| Brand | Wenglor |
| Product Type | Photoelectric Sensor |
| Model Number | HT77PA3 |
Wenglor HT77PA3 Infrared Light Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Range | 1,500 mm |
| Setting Range | 300 ... 1,500 mm |
| Switching Hysteresis | < 5 % |
| Light Source | Infrared Light |
| Max. Ambient Light | 10,000 Lux |
| Supply voltage | 10 ... 30 V DC |
| Supply voltage with IO Link | - |
| Current Consumption (Ub = 24 V) | 40 mA |
| Switching Frequency | 300 Hz |
| Switching Frequency (interference-free mode) | - |
| Response time (interference-free mode) | - |
| Response Time | 1,700 µs |
| Temperature Range | -25 ... 60 °C |
| Switching Output Voltage Drop | < 2.5 V |
| Switching Output/Switching Current | 200 mA |
| Interface | - |
| Setting Method | Potentiometer |
| Housing Material | Plastic, PBT |
| Connection | M12 × 1; 4-pin |
| Output | PNP NC, PNP NO |
| Circuit | NC NC+NO NO |
| Optic Cover | - |
| Degree of Protection | IP67 |
| Weight | 126 g |
The HT77PA3 Wenglor Infrared Light Photoelectric Sensor provides detection up to 1,500 mm sensing range in industrial automation environments. It operates on 10–30 V DC supply and delivers 300 Hz switching frequency with 1,700 µs response time. As part of the PK Series, this model supports PNP NC and PNP NO outputs. The HT77PA3 Wenglor Infrared Light Photoelectric Sensor ensures controlled detection performance across machine-level applications.
In conveyor systems, packaging lines, assembly processes, and automated production cells, the HT77PA3 enables stable object detection within its 300–1,500 mm adjustable range. The infrared light source supports long-distance sensing, while low switching hysteresis below 5% ensures consistent signal behavior. With IP67 protection and PBT housing, it withstands dust and moisture conditions in Indian industrial facilities.
The HT77PA3 from Wenglor maintains defined electrical characteristics with 40 mA current consumption at 24 V DC. As a PK Series device, it integrates into PLC-based automation systems using standard M12 connectivity. The HT77PA3 Wenglor Infrared Light Photoelectric Sensor provides reliable sensing performance for industrial applications requiring extended range detection and stable switching response.
