E3H2-T4C4M-N 2M m12 photoelectric sensor

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E3H2-T4C4M-N 2M M12 Photoelectric Sensor: Precision Detection for Demanding Automation

In the relentless rhythm of modern automation, where milliseconds matter and reliability is non-negotiable, the humble photoelectric sensor stands as an indispensable sentinel. Detecting presence, absence, positioning, or counting objects with unwavering precision is fundamental. Enter sensors like the E3H2-T4C4M-N 2M M12 Photoelectric Sensor – a model designation that signifies a specific blend of performance, durability, and practicality engineered for industrial rigor. Understanding its capabilities unlocks smarter, more resilient automation solutions.

Decoding the Model: What E3H2-T4C4M-N 2M M12 Signifies

The model number isn’t arbitrary; it’s a concise datasheet revealing key characteristics:

1. E3H2: Typically identifies the core series or family from a specific manufacturer (like Omron, a common originator of E3H-series sensors), defining the basic form factor and technology (diffuse-reflective, retro-reflective, thru-beam).
2. T4C4: This segment usually encodes critical operational specifications:

• T4: Often denotes the detection distance. For diffuse reflective sensors like the E3H2 series, T4 typically signifies a standard sensing range, often around 200mm to 300mm, suitable for a wide array of common applications without needing excessive clearance.
• C4: Primarily indicates the output type and circuit configuration. “C4” commonly specifies an NPN output transistor (sinking) in a Normally Open (NO) configuration. This means the output switch (transistor) activates (turns “ON” or closes the circuit) when an object is detected, sourcing current to the load connected.

1. M-N: Often identifies the housing material and specific variant details. “M” frequently signifies a metallic housing (e.g., nickel-plated brass), crucial for enhanced durability, resistance to chemicals and oils, and superior electromagnetic noise immunity compared to plastic housings. “N” might indicate additional features like a specific connector or pinout.
2. 2M: Unambiguously specifies the length of the attached cable – 2 meters. This pre-attached cable simplifies installation, providing sufficient reach for many machine layouts without requiring separate cabling purchases or terminations.
3. M12: Defines the industry-standard connector type at the end of the cable. The ubiquitous M12 connector is a rugged, circular connector featuring a 12mm locking thread. Its 4-pin variant (standard for 3-wire DC sensors like this one) offers quick, secure, and reliable connections, resistant to vibration and environmental contaminants. Standardization using M12 connectors streamlines panel building, maintenance, and sensor replacement across countless industrial devices.

Core Function: Diffuse Reflective Photoelectric Sensing

The E3H2-T4C4M-N operates primarily as a Фотоэлектрический датчик диффузного отражения. Here’s how it excels:

• Single Unit Simplicity: Unlike thru-beam sensors requiring separate emitter and receiver units, the diffuse type integrates both the light source (typically an LED) and the receiver into one compact housing. The emitted light beam travels out, strikes a target object within its defined range, and diffusely reflects some light back to the receiver in the same housing.
• Detection Logic: The sensor’s internal circuitry evaluates the intensity of this returned light. When sufficient light is reflected back (indicating an object is present within the sensing range), the sensor triggers its NPN Normally Open (NO) output.
• Practical Advantage: This “all-in-one” design drastically simplifies installation. Only one mounting point is needed, and alignment is generally less critical than with thru-beam types, making it ideal for space-constrained environments or applications where mounting opposite sides is impractical.

Engineered for Industrial Resilience

The E3H2-T4C4M-N 2M M12 Photoelectric Sensor isn’t just about detection; it’s built to last and perform consistently under pressure:

• Robust Metallic Housing (M-N): The nickel-plated brass construction provides exceptional resistance to impact, vibration, cutting oils, coolants, and various industrial chemicals. This makes it perfectly suited for harsh factory floors, machine tools, material handling systems, and packaging lines.
• Environmental Protection: Standard models typically offer a high Ingress Protection (IP) rating, such as IP67. This signifies complete resistance to dust ingress and protection against the effects of temporary immersion in water (up to 1m for 30 minutes). Operation in wet, dusty, or washdown environments becomes reliable.
• Electrical Immunity: The metallic housing acts as a shield, significantly enhancing Electromagnetic Compatibility (EMC), minimizing interference from nearby motors, drives, or welding equipment that could cause false triggering in less robust sensors.
• Reliable Connections: The industry-standard M12 connector ensures vibration-proof electrical connections. Its circular design and threaded coupling make it fast to connect/disconnect while preventing accidental loosening. The pre-attached 2-meter cable means installers don’t waste time fitting connectors, speeding deployment.

Where the E3H2-T4C4M-N Excels: Key Applications

This sensor’s blend of reliable diffuse detection, rugged build, and convenient connectivity makes it a go-to choice for diverse tasks:

1. Object Presence/Absence Verification: Confirming parts are present on a conveyor, in a fixture, or entering/leaving a workstation. Critical for process control and preventing errors downstream.
2. Part Counting & Sorting: Tracking items moving past a point on a production or packaging line.
3. Level Detection (Bin/Bulk): Sensing the presence (or absence) of materials in bins, hoppers, or chutes, often triggering refill or emptying processes.
4. Machine Guarding & Access Control: Detecting the presence of personnel or objects in restricted zones for safety interlocks (often as part of a larger safety system).
5. Position Confirmation: Verifying cylinders are retracted/extended, doors are closed, or components are correctly seated.
6. End-of-Travel Detection: Signaling when a moving part (like a slide or actuator) has reached its limit.

The Undeniable Advantage: Why Choose This Configuration?

Selecting the E3H2-T4C4M-N 2M M12 Photoelectric Sensor offers distinct benefits for engineers and maintenance teams:

• Simplified Installation & Maintenance: The integrated 2M cable with M12 connector eliminates the need for field wiring the sensor itself. Connections at the control cabinet are quick via M12 receptacles. Replacement is equally fast – unplug the faulty sensor, plug in the new one.
• Enhanced Reliability & Uptime: The robust metallic housing and high IP rating ensure longevity and consistent operation in tough conditions, minimizing sensor-related downtime and costly production interruptions.
• Reduced Design Complexity: Using industry-standard M12 connectors simplifies panel design and integration with PLCs and other control systems, knowing connectivity is assured.
• Optimized Performance: The diffuse reflective principle with a standard sensing range (T4) offers a practical balance between detection capability and installation flexibility for a vast majority of common industrial detection tasks. The NPN NO (C4) output is widely compatible with standard programmable logic controllers (PLCs) and control circuitry.

Conclusion: The Reliable Workhorse for Industrial Detection

The detailed model name E3H2-T4C4M-N 2M M12 Photoelectric Sensor encapsulates a purpose-built industrial solution