Keyence PZ-G61N Photoelectric Sensor 4.2m Cable

Keyence PZ-G61N Retro-Reflective Photoelectric Sensor

Product Introduction

The PZ-G61N is a rectangular cable-type model in the Keyence PZ-G series. Specifically, it combines long-range retro-reflective sensing with the P.R.O. function, which stabilizes detection on dirty or glossy targets. Technicians choose this sensor for conveyors, packaging equipment, and material handling lines where a compact rectangular body must cover several meters.

Moreover, the pre-wired 2 m cable removes the need for a separate connector, so installation stays simple in tight panels. The glass-fiber reinforced PBT housing and polyarylate lens cover resist impact and cleaning chemicals. Therefore, the unit fits food processing, automotive assembly, and logistics sortation.

Technical Specifications

The PZ-G61N detects targets 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 objects on high-speed conveyors.

Output configuration includes an NPN 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 60 g for the rectangular cable model, and mounting torque is 0.5 N·m maximum at the mounting hole.

Installation Guide

First, mount the PZ-G61N 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 route the 2 m cable to the control cabinet and connect the 10–30 VDC supply.

Afterward, wire the NPN output to the controller input, which suits sinking-input PLC cards. Besides, adjust the 1-turn trimmer until the green stability LED lights during normal operation. 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-G61N photoelectric sensor with 2 m 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-G61N?
A: The PZ-G61N reaches 4.2 m with the R-2L reflector, and the minimum distance is 0.1 m.

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

Q3: How long is the cable on the PZ-G61N?
A: The sensor ships with a fixed 2 m cable, so no separate connector cable is needed.

Q4: Can the PZ-G61N survive washdown cleaning?
A: Yes. Its IP69K rating and PBT housing support high-pressure washdown in food and beverage plants.

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