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Specification & Description
| Specification | Description |
|---|---|
| Part Number | WT34-R220 |
| Alternative Part Number | WT34R220 |
| Manufacturer | Sick |
| Type | Photoelectric sensors |
| Function Principle | Direct sensing photoelectric cell with background suppression |
| Dimensions (W x H x D) | 27 mm x 92 mm x 70 mm |
| Housing Shape (Light Exit) | Square |
| Sensing Range | 100 mm to 2,500 mm |
| Light Type | Infrared light |
| Light Emitter | Light Emitting Diode (LED) |
| Light Spot Size (Distance) | Ø 80 mm (at 2,500 mm) |
| Adjustment | Potentiometer |
| Supply Voltage | 20 V AC/DC to 250 V AC/DC |
| Power Consumption | < 2 VA |
| Output | Relay, galvanically isolated |
| Switching Function | Changeover |
| Switching Type | Light/dark on selectable via L/D switch |
| Switching Current | 4 A @ 250 V AC, 4 A @ 24 V DC, 0.125 A @ 250 V DC |
| Enclosure Rating | IP67 |
| Operating Temperature Range | –40 °C to +60 °C |
| Storage Temperature Range | –40 °C to +75 °C |
| Material | Plastic, ABS |
| Weight | 140 g |
| Commodity Code | 853650 |
| ETIM Classifications | EC002719 (ETIM 5.0, 6.0, 7.0, 8.0) |
| UNSPSC | 39121528 |
The Sick WT34-R220 is a versatile and robust photoelectric sensor designed to meet the diverse needs of industrial automation. This compact sensor is engineered to provide reliable detection and measurement, ensuring precision in a variety of applications. With a rectangular housing measuring 27 mm x 92 mm x 70 mm, it is suitable for space-constrained environments.
The WT34-R220 operates on the principle of object reflection with background suppression, which allows it to accurately identify objects within a range of 100 mm to 2,500 mm. It utilises infrared light as its light source, with an LED that boasts an average lifespan of 100,000 hours at an ambient temperature of +25 °C, highlighting its longevity and reliability.
This sensor features a potentiometer for easy adjustment and customisation to specific application requirements. It is equipped with a relay output that is galvanically isolated, providing flexibility with a selectable light/dark switching function. The switching output can handle a current of up to 4 A at 250 V AC or 24 V DC, and 0.125 A at 250 V DC, making it suitable for a wide range of load conditions.
Constructed with a durable ABS plastic housing, the WT34-R220 is rated IP67, ensuring protection against dust and water ingress, which allows it to operate effectively in harsh industrial environments. It can withstand operating temperatures ranging from –40 °C to +60 °C and storage temperatures from –40 °C to +75 °C.
The WT34-R220 is a reliable choice for those seeking a high-quality photoelectric sensor that combines functionality, durability, and ease of use for efficient industrial automation processes.
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Frequently Asked Questions
What is the operating principle of this photoelectric sensor?
The WT34-R220 operates on the principle of background suppression, which allows it to detect objects within a specified range while ignoring objects beyond that range.
Can this sensor be used in outdoor environments?
Yes, the WT34-R220 has an IP67 enclosure rating, making it suitable for use in various outdoor conditions as it is protected against dust and water ingress.
What type of light does the sensor use for detection?
The sensor uses infrared light as its source for detection, which is emitted by an LED.
What materials can the WT34-R220 detect?
This sensor can detect a wide range of materials, including opaque objects with different surface finishes, due to its background suppression capability.
Is there any way to adjust the sensing range of the sensor?
Yes, the sensing range can be adjusted using the potentiometer provided on the sensor.
What is the maximum switching frequency of this sensor?
The WT34-R220 has a maximum switching frequency of 10 Hz.
What are the power requirements for this sensor?
The sensor requires a supply voltage of 20 V AC/DC to 250 V AC/DC and consumes less than 2 VA of power.
What type of output does the sensor provide?
The sensor provides a relay output with galvanically isolated changeover contacts.
How can I mount the WT34-R220 sensor?
The sensor can be mounted using the mounting brackets and plates available for it, which can be secured using the through holes provided on the sensor body.
What is the response time of the WT34-R220 sensor?
The sensor has a response time of less than or equal to 10 ms.
Part conditions explained
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