IV4-L5C Keyence IV4 Series Ring Light | White LED Illumination

Product Overview

The Keyence IV4-L5C is a white LED external ring illumination unit designed for the Keyence IV4 Series smart vision platform. It provides supplemental lighting for camera-based inspection, helping engineers manage illumination conditions when evaluating part features, surface appearance, component presence, and assembly quality.

Designed for use with the IV4-500CA sensor, the IV4-L5C receives its power through the connected sensor rather than through a separate power connection. Its aluminum die-cast main housing and acrylic front cover provide a compact lighting assembly for machine-vision installations.

Product identity: IV4-L5C
Manufacturer: Keyence
Product family: IV4 Series
Component type: External ring illumination unit
Light source: White LED
Specified compatible sensor: IV4-500CA
Production status: Active, according to the status information supplied and verified in September 2026.

At a Glance: Engineering Highlights

Technical Specifications

Integration Notes: Lighting, Power and Protection

• Sensor compatibility: The specified compatible sensor is IV4-500CA. Confirm the exact sensor model and accessory configuration before integrating the lighting unit into an existing inspection station.
• Power planning: The light unit is powered through the connected sensor. A separate supply voltage and standalone power-consumption figure are not specified here; verify the applicable Keyence documentation when checking system power budgets.
• Communication architecture: The IV4-L5C is a lighting accessory, not a standalone vision controller or communication interface. It has no built-in communication ports or independently specified communication protocols.
• IP67 conditions: The stated IP67 rating applies only when the unit is attached to the applicable sensor. The rating does not apply under the stated conditions when polarizing filters OP-88644, OP-88645, OP-88646 or OP-88647 are installed. Review the official installation requirements for the actual configuration.
• Environmental limits: Keep the operating environment within 0 to +50°C and at or below 85% RH, without freezing or condensation.
• Mechanical planning: The unit weighs approximately 195 g. Since dimensions are not available in the supplied specifications, verify mounting clearance and assembly dimensions before finalizing a bracket or enclosure.

Where the IV4-L5C Fits in a Vision Inspection System

The IV4-L5C is intended to supplement the illumination of a compatible IV4 smart-camera installation. Its practical value depends on the target material, camera position, working distance, ambient light and inspection criteria.

• Part presence and absence checks: Supplemental illumination can help maintain more consistent image contrast when checking whether a component is present in an assembly.
• Assembly verification: Suitable as a lighting accessory for vision stations that inspect component placement, orientation or visible assembly features, provided the camera configuration supports the required inspection task.
• Packaging and labeling inspection: Can be evaluated for improving image consistency when checking visible label placement, package features or printed-area presence.
• Component and surface inspection: White LED illumination may help reveal visible edges, shapes and surface features. Actual results depend on reflectivity, texture, color contrast and camera setup.
• Automated production lines: Applicable to machine-vision stations where the IV4-500CA is used and additional ring illumination is required within the installation's mechanical and environmental limits.

Engineering note: The IV4-L5C provides illumination; it does not independently perform image processing, defect classification or pass/fail decisions. Those functions depend on the compatible vision sensor, configured inspection tools and system logic.

Field Diagnostics: Is the Lighting Unit Causing the Inspection Problem?

When an IV4 vision station produces unstable inspection results, engineers should separate lighting-related symptoms from sensor, target and configuration issues. The checks below are practical troubleshooting steps, not a claim that the IV4-L5C contains built-in diagnostic electronics.

Diagnostic limitation: No independent fault codes, communication diagnostics, output signals or self-monitoring functions are specified for the IV4-L5C. Diagnose the complete vision system through the compatible sensor and the applicable manufacturer's procedures rather than treating the light unit as a standalone diagnostic device.

Global PLC Spare HUB's Insight

In a machine-vision application, illumination is part of the measurement setup rather than a cosmetic accessory. Even when the camera and inspection program remain unchanged, variations in lighting, surface reflectivity or part position can alter image contrast and affect repeatability.

The Keyence IV4-L5C is worth considering when a compatible IV4-500CA installation requires the specified white LED ring-light configuration. Before replacing an existing unit, engineers should verify the sensor model, accessory mounting arrangement, available clearance and any installed polarizing filter. These checks help prevent a mechanically compatible-looking accessory from being used in a configuration that does not meet the intended protection or inspection requirements.

For replacement planning, record the full model number from the installed unit and compare it with the intended sensor configuration. If the application depends on subtle surface defects, highly reflective targets or strict inspection repeatability, validate the lighting arrangement with actual production samples before approving the change for continuous operation.

Selection Guidance: Confirm Before Ordering

• Confirm that the installed vision sensor is the specified IV4-500CA.
• Verify that white LED ring illumination is appropriate for the target material and inspection task.
• Check whether a polarizing filter is installed and whether its use affects the required IP67 protection conditions.
• Review the operating temperature, humidity, mounting clearance and total assembly weight.
• If the original installation has an undocumented cable or mounting arrangement, confirm the details against the applicable Keyence documentation before ordering.
• For applications involving glossy, transparent or low-contrast parts, request technical confirmation and evaluate the lighting arrangement using representative samples.

Frequently Asked Questions

FAQ 1: What information should be provided when requesting a replacement quotation?

Provide the complete IV4-L5C model number, the connected sensor model, the quantity required and any known accessory or installation details. A photograph of the existing nameplate and mounting arrangement can help reduce ordering errors when the system documentation is incomplete.

FAQ 2: How should the lighting be evaluated for a new inspection task?

Test representative production parts under actual operating conditions. Compare image contrast, edge visibility and inspection stability across normal variations in part position and surface finish. The suitability of white LED ring illumination cannot be guaranteed for every material or defect type from the light-unit specification alone.

FAQ 3: Can this accessory be selected by appearance if another ring light has similar dimensions?

No. Similar external geometry does not establish electrical, optical or mechanical compatibility. Verify the approved sensor pairing, attachment method and applicable operating conditions before substituting any lighting accessory.

FAQ 4: What should be checked when an inspection issue occurs only on certain product batches?

Compare the reflectivity, color, surface texture and positioning of the affected parts against known-good samples. Also check whether changes in upstream processing, ambient lighting or fixture alignment are altering the captured image. This helps determine whether the problem is associated with the target, illumination or inspection configuration.

FAQ 5: What details are needed to assess suitability for a replacement or retrofit project?

Share the sensor model, current lighting accessory model, target material, working distance, mounting constraints, operating environment and inspection objective. If the required protection rating is critical, also identify any installed polarizing filters. These details support a more reliable compatibility review than model-name similarity alone.

Warranty, Shipping and Order Support

• Warranty: 12-month warranty from the agreed warranty start date, subject to the seller's written terms. Coverage applies to eligible product defects under normal intended use. Damage caused by improper installation, misuse, unauthorized modification or repair, accidents, or operation outside specified limits may be excluded. Confirm the applicable warranty terms before purchase.
• Shipping methods: FedEx, UPS or DHL, subject to destination, service availability and shipment arrangements.
• Dispatch: Target dispatch within 24–48 hours after payment and order details are confirmed, subject to stock availability and any required verification.
• Packaging: Packaging and included accessories are subject to the confirmed order scope. Do not assume that additional cables, mounting hardware, filters or manuals are included unless explicitly listed.
• Order assistance: Contact Global PLC Spare HUB with the model number, required quantity and destination to request a quotation and confirm lead time, shipping options and compatibility details.

Request a Quote for Keyence IV4-L5C

Need a white LED ring illumination unit for a Keyence IV4 vision installation? Send Global PLC Spare HUB your required quantity and sensor model. We can help review the stated compatibility, confirm order details and provide a quotation with available shipping options.

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