E3S-2E4 Equivalent & Substitute Parts

Part Overview

The E3S-2E4 is a through-beam optical sensor manufactured by Omron Automation and Safety with a sensing distance of 78.740" (2m). This NPN sensor features selectable Dark-ON/Light-ON output configuration and operates across 12V to 24V supply voltage. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

E3S-2E4

Omron Automation and SafetyIn Stock: 894E3S-2E4 Datasheet

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E3S-AT11

Omron Automation and SafetyIn Stock: 1242E3S-AT11 Datasheet

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E3Z-T61

Omron Automation and SafetyIn Stock: 1992E3Z-T61 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the E3S-2E4 are identified based on the following core compatibility parameters:

• Sensing Method: Through-Beam (required match)
• Output Configuration: NPN - Dark-ON/Light-ON - Selectable (required match)
• Voltage - Supply: 12V ~ 24V (required match)
• Connection Method: Cable (required match)
• Operating Temperature Range: -25°C ~ 55°C (required match)

The E3S-AT11 and E3Z-T61 both satisfy these core electrical and mechanical compatibility requirements. Variations in sensing distance, response time, light source wavelength, and ingress protection rating are secondary parameters that may be evaluated based on specific application requirements but do not preclude substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Both E3S-AT11 and E3Z-T61 are active products suitable for replacing the obsolete E3S-2E4 in applications requiring through-beam optical sensing with NPN selectable output.

E3S-AT11 provides extended sensing distance (7m versus 2m) with improved response time (500µs versus 3ms) and enhanced ingress protection (NEMA 4X, IP67). This part is RoHS3 Compliant and REACH Affected. The red light source (700nm) offers alternative optical characteristics compared to the original infrared specification.

E3Z-T61 delivers maximum sensing distance (15m) with faster response time (1ms) and the highest ingress protection rating (IP67, IP69K). This part is RoHS Compliant and REACH Unaffected. The infrared light source (870nm) maintains closer alignment with the original E3S-2E4 infrared specification.

Selection between these substitutes depends on application-specific requirements for sensing distance, environmental protection rating, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the E3S-AT11 or E3Z-T61 directly replace the E3S-2E4 in existing installations?

A: Both parts maintain compatibility with the core electrical parameters (12V ~ 24V supply, NPN selectable output, through-beam sensing method, cable connection). However, the increased sensing distances (7m and 15m respectively) and different ingress protection ratings must be evaluated against specific application requirements.

Q: What is the primary difference between E3S-AT11 and E3Z-T61?

A: The E3Z-T61 offers greater sensing distance (15m versus 7m) and superior ingress protection (IP69K rating). The E3S-AT11 provides faster response time (500µs versus 1ms) and RoHS3 compliance. Light source wavelengths differ: E3S-AT11 uses red (700nm) while E3Z-T61 uses infrared (870nm).

Q: Are there packaging differences between these substitute parts?

A: All three parts utilize cable connection methods. E3S-AT11 and E3Z-T61 are supplied in bulk packaging, consistent with standard through-beam optical sensor distribution.

Q: How do response times compare across these parts?

A: E3S-2E4 has a 3ms response time. E3Z-T61 improves this to 1ms, while E3S-AT11 achieves the fastest response at 500µs. Faster response times enable detection of higher-speed object transitions.

Q: What regulatory compliance differences exist?

A: E3S-AT11 is RoHS3 Compliant and REACH Affected. E3Z-T61 is RoHS Compliant and REACH Unaffected. Selection should align with applicable regulatory requirements in the target market or application.