Omron E3S-R87 Retroreflective Optical Sensor - Equivalent & Substitute Parts

Part Overview

The Omron E3S-R87 is a retroreflective optical sensor designed for detection applications requiring adjustable sensing distances between 0.394" and 1.181" (10mm to 30mm). The sensor features PNP output with selectable Dark-ON/Light-ON operation and operates across a 10V to 30V supply range. The E3S-R87 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

E3S-R87

Omron Automation and SafetyIn Stock: 1221E3S-R87 Datasheet

Current PartRFQ

E3Z-B86

Omron Automation and SafetyIn Stock: 3666E3Z-B86 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the E3S-R87 is determined by the following critical parameters:

• Sensing Method: Both main and substitute parts must employ retroreflective sensing technology
• Output Configuration: PNP output with Dark-ON/Light-ON selectable operation is required
• Response Time: 1ms response time is maintained across alternatives
• Ingress Protection: IEC IP67 rating is consistent
• Operating Temperature Range: -25°C to 55°C operating window is preserved
• Sensing Distance: The E3S-R87 operates at short range (10mm ~ 30mm). Substitute parts may operate at different sensing distances while maintaining retroreflective functionality

The E3Z-B86 qualifies as a substitute based on matching retroreflective sensing method, PNP output with selectable Dark-ON/Light-ON operation, 1ms response time, IEC IP67 ingress protection, and identical operating temperature range. The E3Z-B86 operates at extended sensing distance (500mm) and uses red light source (680nm) instead of infrared (880nm), with connector-based connection instead of cable.

Parameter Comparison

Engineering Selection Recommendations

The E3Z-B86 is available as an active product with current manufacturing status, whereas the E3S-R87 is obsolete. Selection between these parts depends on application-specific sensing distance requirements:

• Short-range applications (10mm ~ 30mm): The E3S-R87 specifications define this distance band. If application requirements mandate this specific range, component redesign or sourcing from inventory stock may be necessary.

• Extended-range applications (500mm): The E3Z-B86 provides retroreflective sensing at significantly extended distance with active product status and RoHS compliance certification.

Both parts maintain identical response time (1ms), output configuration (PNP with selectable Dark-ON/Light-ON), ingress protection (IEC IP67), and operating temperature range (-25°C ~ 55°C). Supply voltage ranges differ: E3S-R87 accepts 10V ~ 30V while E3Z-B86 operates within 12V ~ 24V. Light source wavelength differs (infrared 880nm versus red 680nm) and connection method differs (cable versus connector).

Frequently Asked Questions (FAQ)

Q: Can the E3Z-B86 directly replace the E3S-R87 in existing installations?

A: Direct replacement depends on sensing distance requirements. The E3Z-B86 operates at 500mm sensing distance, whereas the E3S-R87 operates at 10mm ~ 30mm. If the application requires short-range detection within the 10mm ~ 30mm band, the E3Z-B86 will not function as a direct substitute. Connection method also differs (connector versus cable), requiring interface modification.

Q: What are the key compatibility factors between these parts?

A: Both parts share retroreflective sensing method, PNP output with selectable Dark-ON/Light-ON operation, 1ms response time, IEC IP67 ingress protection, and -25°C ~ 55°C operating temperature range. These parameters define functional equivalence for retroreflective optical sensing applications.

Q: How does the light source difference (infrared 880nm versus red 680nm) affect substitution?

A: Light source wavelength affects retroreflector material compatibility and ambient light immunity. Infrared (880nm) and red (680nm) sources interact differently with retroreflective materials and environmental conditions. Application-specific retroreflector selection must account for the light source wavelength of the chosen sensor.

Q: What is the significance of product status (Obsolete versus Active)?

A: Obsolete status indicates the E3S-R87 is no longer manufactured. Active status for the E3Z-B86 ensures ongoing availability, manufacturing support, and compliance with current standards. For new designs, active products are preferred; for legacy system maintenance, obsolete parts may require inventory sourcing.

Q: Does the supply voltage range difference affect substitution feasibility?

A: The E3S-R87 accepts 10V ~ 30V while the E3Z-B86 operates within 12V ~ 24V. If the application supplies voltage below 12V or above 24V, the E3Z-B86 will not operate. Verify system supply voltage compatibility before substitution.