Keyence PZ-G61EP Retro-Reflective Sensor PNP

Keyence PZ-G61EP Retro-Reflective Photoelectric Sensor

Product Introduction

The PZ-G61EP belongs to the Keyence PZ-G series of built-in amplifier photoelectric sensors. Specifically, this retro-reflective long-range model carries the P.R.O. function, which improves detection stability across dirty or reflective targets. Engineers commonly specify it for conveyor lines, packaging machines, and material handling systems where a compact rectangular sensor must cover several meters.

Moreover, the sensor ships with an M12 pigtail connector, so technicians can replace it quickly without rewiring the whole panel. The glass-fiber reinforced PBT housing and polyarylate lens cover resist impact, chemicals, and daily washdown. Therefore, the unit performs well in food processing, automotive assembly, and logistics sortation.

Technical Specifications

The PZ-G61EP detects objects from 0.1 to 4.2 m when paired with the R-2L reflector. A red LED provides the light source, and a single-turn trimmer (230°) sets sensitivity. Additionally, the response time reaches 500 µs maximum, which supports fast-moving targets on high-speed conveyors.

Output configuration includes a PNP open collector rated at 30 V maximum and 100 mA maximum, with residual voltage of 1 V maximum. Users may switch between LIGHT-ON and DARK-ON operation modes. The orange LED indicates output status, while the green LED confirms stable operation. However, the design offers no spot diameter specification and no built-in communication ports, so it suits discrete sensing rather than networked diagnostics.

Electrical protection covers reversed polarity, overcurrent, and surge absorption. Besides, interference suppression allows up to two units through polarization filters or the automatic different frequency function. The supply voltage ranges from 10 to 30 VDC nominal, including ripple (P-P) 10%, and current consumption stays at 34 mA or less.

Mechanical and Environmental Parameters

The housing uses glass-fiber reinforced PBT, and the lens cover uses polyarylate (PAR). Both materials tolerate typical factory chemicals and cleaning agents. Operating temperature spans -20 to +55 °C with no freezing, and relative humidity runs from 35 to 85 % RH without condensation.

Furthermore, the protection rating reaches IEC IP67, NEMA 4A/6/12, and DIN IP69K. Ambient light resistance handles incandescent lamps at 5,000 lux maximum and sunlight at 20,000 lux maximum. Vibration resistance covers 10 to 55 Hz with 1.5 mm double amplitude for 2 hours in each X, Y, Z direction. Shock resistance reaches 1,000 m/s², six times in each axis. Finally, the approximate weight is 30 g, and the mounting torque is 0.5 N·m maximum at the mounting hole.

Installation Guide

First, mount the PZ-G61EP on a rigid bracket using the mounting hole, and tighten to no more than 0.5 N·m. Next, align the sensor face with the R-2L reflector at the required distance within the 0.1–4.2 m range. Then connect the M12 pigtail to a 10–30 VDC supply and wire the PNP output to the controller input.

Afterward, adjust the 1-turn trimmer until the green stability LED lights during normal operation. Besides, select LIGHT-ON or DARK-ON according to the control logic. If two sensors sit close together, mount them with opposite polarization or enable the automatic different frequency function. Finally, verify detection with a test target and confirm the orange output LED changes state correctly.

Packaging List

• 1 × Keyence PZ-G61EP photoelectric sensor

• 1 × M12 pigtail connector cable

• 1 × Mounting bracket and screws

• 1 × Reflector (R-2L type, where included)

• 1 × Quick reference instruction sheet

FAQ

Q1: What is the maximum detecting distance of the PZ-G61EP?
A: The PZ-G61EP reaches 4.2 m with the R-2L reflector, and the minimum distance is 0.1 m.

Q2: Does this sensor offer NPN output?
A: No. This model provides a PNP open collector output rated 30 V and 100 mA maximum.

Q3: Can the PZ-G61EP survive washdown cleaning?
A: Yes. Its IP69K rating and PBT housing support high-pressure washdown in food and beverage plants.

Q4: How do I switch between LIGHT-ON and DARK-ON?
A: Use the operation mode switch on the body. The PZ-G61EP supports both modes as a selectable option.

Q5: What shipping methods do you offer?
A: We ship worldwide through Fedex, UPS, and DHL, with tracking provided for every order.