Keyence PZ-G101EN NPN Diffuse Sensor

Keyence PZ-G101EN Photoelectric Sensor

Product Introduction

The PZ-G101EN is part of the Keyence PZ-G series of built-in amplifier photoelectric sensors. This model uses a diffuse reflective sensing method with a narrow view design. It detects targets without a separate reflector, which simplifies setup. The maximum detection distance reaches 200 mm for standard targets. Therefore, the sensor suits medium-range presence and positioning tasks on production lines.

Maintenance teams appreciate the PZ-G101EN for its simple sensitivity adjustment. A one-turn trimmer provides a 230-degree tuning range. Users can switch between LIGHT-ON and DARK-ON operation modes as needed. Additionally, the M12 pigtail connector reduces wiring effort during replacement. This design saves time when a sensor fails and must be swapped quickly.

The unit ships with an instruction manual only. The pigtail connector is built into the housing, so no separate cable purchase is required for basic connection. However, users may need an extension cable for long runs. Furthermore, the compact rectangular housing fits into crowded panel spaces and machine frames.

Technical Specifications

The PZ-G101EN runs on a supply voltage of 10 to 30 VDC, including 10% peak-to-peak ripple. Current consumption remains at 34 mA or less. The control output is an NPN open collector type. It supports a maximum of 30 V and 100 mA, with residual voltage limited to 1 V.

Key electrical parameters:

• Supply Voltage: 10 to 30 VDC (with ripple)

• Current Consumption: 34 mA or less

• Output Type: NPN open collector

• Response Time: 500 µs maximum

• Control Output: 30 V / 100 mA max

The optical system uses a red LED light source. Spot diameter measures about 5 mm at a 100 mm detection distance. Sensitivity adjustment relies on a 1-turn trimmer with 230-degree travel. Operation mode is switch-selectable between LIGHT-ON and DARK-ON. Two LEDs show status: orange for output and green for stable operation.

Mechanical and Environmental Parameters

The housing is made of glass-fiber reinforced PBT, and the lens cover uses polyarylate (PAR). These materials resist impact and common industrial chemicals. The mounting hole allows a maximum torque of 0.5 N·m. Over-tightening can crack the housing, so users should follow this limit.

Environmental ratings:

• Protection Rating: IP67 / NEMA 4A, 6, 12 / IP69K

• Operating Temperature: -20 to +55 °C (no freezing)

• Relative Humidity: 35 to 85 % RH (no condensation)

• Ambient Light Resistance: 5,000 lux (incandescent) / 20,000 lux (sunlight)

• Vibration Resistance: 10 to 55 Hz, 1.5 mm double amplitude

• Shock Resistance: 1,000 m/s², 6 times per axis

Interference suppression allows up to 2 units when the automatic different frequency function is enabled. The M12 pigtail model weighs approximately 30 g. Its light weight reduces stress on mounting brackets and moving fixtures.

Installation Guide

First, mount the PZ-G101EN through its rectangular housing mounting holes. Keep the tightening torque at or below 0.5 N·m. The sensing face should align squarely with the target surface. A tilted angle can weaken the received light and shorten the effective range.

Next, wire the M12 pigtail connector to the control system. Confirm the pin assignment matches the NPN output configuration. Route the pigtail away from high-voltage cables and moving parts. Additionally, secure the cable with ties to avoid strain on the connector body.

After power-up, watch the green stability LED. Turn the sensitivity trimmer slowly with a small screwdriver until the orange output LED reacts correctly. Test with sample targets at the expected distance. Finally, check that the LIGHT-ON or DARK-ON setting matches the machine logic.

Packaging List

• PZ-G101EN sensor unit × 1

• Instruction manual × 1

Note: Extension cables are sold separately. Certificates and warranty documents are not included.

FAQ

Q1: What is the maximum sensing distance of the PZ-G101EN?
The sensor detects standard white targets up to 200 mm away at maximum sensitivity. Actual range depends on target color and surface finish.

Q2: Does this model include a cable?
The PZ-G101EN has a built-in M12 pigtail connector. An extension cable is not included, so order one separately if longer runs are needed.

Q3: Can the PZ-G101EN handle washdown environments?
Yes. It carries an IP69K rating plus NEMA 4A, 6, and 12 approvals. The housing resists water spray and dust ingress in food and beverage lines.

Q4: How do I change between LIGHT-ON and DARK-ON?
A switch on the sensor body selects the mode. Check the instruction manual for the switch position and orientation.

Q5: What response time does this sensor offer?
The PZ-G101EN responds within 500 µs maximum. This speed fits most conveyor, packaging, and assembly detection tasks.