The PZ-G51CB belongs to the Keyence PZ-G series of built-in amplifier photoelectric sensors. This model uses a thrubeam sensing method with a threaded M18 nut shape. Specifically, it reaches a maximum detecting distance of 20 m. The red LED light source makes optical alignment simple during setup. Meanwhile, the dual open collector output supports both NPN and PNP control systems. As a result, the PZ-G51CB fits many factory automation tasks, such as object counting, position detection, and pass/fail inspection.
The PZ-G51CB provides a 20 m maximum detecting distance (65.6 ft). Its light source is a red LED. Sensitivity adjustment uses a 1-turn trimmer with a 230° range. Additionally, the response time is 500 µs maximum, which supports fast moving targets. The operation mode is LIGHT-ON/DARK-ON and remains switch-selectable. For status monitoring, the sensor includes four LEDs. The power indicator (T) is orange, and the output indicator (R) is orange. Furthermore, the stable operation LED is green, while the light receiving LED is red.
The supply voltage ranges from 10 to 30 VDC nominal, including ripple (P-P) 10%. Current consumption stays low: the transmitter uses 20 mA or less, and the receiver uses 28 mA or less. The output type is a dual open collector, which combines NPN and PNP in one unit. Control output handles 30 V maximum and 100 mA maximum. Residual voltage is 1 V maximum. Besides, the cable connection uses an M12 connector, and the cable is sold separately. Protection circuits include reversed polarity, overcurrent protection, and a surge absorber. For interference suppression, the sensor supports up to 2 units through polarization filters or automatic different frequency function.
The housing material is glass-fiber reinforced PBT, which offers strong durability. The lens cover uses polyarylate (PAR). The PZ-G51CB weighs approximately 15 g, making it lighter than rectangular models. Its threaded M18 body simplifies panel mounting with standard nuts. The protection rating meets IEC IP67, NEMA 4A, 6, 12, and DIN IP69K. Therefore, it withstands dust and water exposure in harsh areas. The operating temperature range is -20 to +55 °C with no freezing. Relative humidity stays between 35 and 85 % RH with no condensation.
Ambient light resistance reaches 5,000 lux maximum for incandescent lamps and 20,000 lux maximum for sunlight. Vibration resistance covers 10 to 55 Hz with 1.5 mm double amplitude for 2 hours in each X, Y, Z direction. Shock resistance is 1,000 m/s², tested 6 times in each X, Y, Z direction. Mounting torque should not exceed 1.0 N·m on the front M18 part. Meanwhile, the side slotted hole part allows 0.5 N·m maximum. These ratings ensure stable performance in demanding industrial environments.
First, insert the threaded M18 body through the mounting hole and secure it with nuts. Tighten the front part to 1.0 N·m maximum and the side slot to 0.5 N·m maximum. Next, connect the M12 connector to the power supply and load. Then, set the operation mode to LIGHT-ON or DARK-ON based on your application. After that, adjust the 1-turn trimmer until the stable operation LED turns green. Finally, verify alignment by checking the light receiving LED. If interference occurs, change the frequency setting or add polarization filters.
1 × Keyence PZ-G51CB Thrubeam Photoelectric Sensor (Transmitter and Receiver)
1 × Mounting Nut Set
1 × Original Keyence Packaging Box
1 × Quick Reference Sheet
Shipping Methods: Fedex, UPS, DHL.
Q1: What is the maximum detecting distance of the PZ-G51CB?
A: The PZ-G51CB offers a maximum detecting distance of 20 m (65.6 ft). This makes it suitable for long-range thrubeam detection.
Q2: Does this sensor include a cable?
A: No. The PZ-G51CB uses an M12 connector, and the cable is sold separately. Please order the correct cable length for your application.
Q3: What output type does the PZ-G51CB provide?
A: It provides a dual open collector output. This means it supports both NPN and PNP wiring, with a maximum load of 30 V and 100 mA.
Q4: How do I adjust sensitivity on this Keyence sensor?
A: Use the 1-turn trimmer with a 230° range. Turn it slowly while watching the stable operation LED for the best setting.
Q5: What is the protection rating of the PZ-G51CB?
A: The sensor meets IEC IP67, NEMA 4A, 6, 12, and DIN IP69K. Therefore, it resists dust and water in tough environments.
| Brand Name | |
| Model No. | PZ-G51CB |
| Product Type | Thrubeam Sensor |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
The Keyence PZ-G51EP is a standard thrubeam photoelectric sensor from the PZ-G series. It delivers a 20 m detecting distance, red LED light source, PNP open collector output, and IP67 protection. The M12 pigtail connector simplifies wiring in automated production lines.
The Keyence PZ-G51EN is a standard thrubeam photoelectric sensor from the PZ-G series. It offers a 20 m detecting distance, red LED light source, NPN open collector output, and IP67 protection. The M12 pigtail connector simplifies wiring in industrial automation lines.
The Keyence PZ-G51N is a standard thrubeam photoelectric sensor from the PZ-G series. It offers a 20 m detecting distance, red LED light source, and NPN open collector output. A pre-wired 2 m cable eliminates the need for a separate connector.
The Keyence PZ-G51P is a standard thrubeam photoelectric sensor with a PNP open collector output. It offers a 20-meter detection range, a 500 µs response time, and an IP69K enclosure rating for harsh environments.
The Keyence SJ-E156H is a high-end bar ionizer built on pulse AC corona discharge. It pairs 49 tungsten electrodes with a 1620 mm effective length, holding ±30 V ion balance across very wide production lines.
The Keyence SJ-E132H is a high-end bar ionizer using pulse AC corona discharge. It combines 41 tungsten electrodes with a 1380 mm effective length, delivering stable ±30 V ion balance for wide industrial production lines.
The Keyence SJ-E108H is a high-end bar ionizer using pulse AC corona discharge. It delivers fast static elimination with 33 electrodes and a 1140 mm effective length, ensuring precise ion balance for industrial production lines.
The Keyence SJ-E084H is an 800mm bar-type ionizer for high-end static control. Twenty-five tungsten electrodes deliver ±8000V pulse AC corona discharge across a 900mm effective range. It suits wide webs and larger assembly zones.
Discover the Allen-Bradley 1794-IA16 Flex I/O AC input module. 16 non-isolated inputs, 74-132VAC range, DIN rail mount. Learn specs, applications, and business value.
Explore the Allen-Bradley 1794-IB16 24VDC sinking input module. Learn specs, compatibility, and how it reduces costs in distributed I/O applications.
Keyence PZ-G42EP Square Reflective Sensor: PNP M12 Photoelectric Technical Guide Product Introduction The Keyence PZ-G42EP belongs to the PZ-G series of self-contained photoelectric sensors. Specifically, it adopts a rectangular housing…
PZ-G42EN Reflective Sensor Installation and Maintenance Guide Product Introduction The Keyence PZ-G42EN belongs to the PZ-G series of self-contained photoelectric sensors. Specifically, it is a diffuse reflective, short-range model in…
Fast delivery for urgent requirements.
Large stock ensures immediate availability.
Authentic, high-quality PLC components.
Reliable support to clients worldwide.