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24V Power Supply Selection for Commercial Digital Signage and Information Displays

Rendered WEHO LRS-200-24 product detail with exact model label, nine terminals and fanless housing

Last Updated: September 27, 2026

Quick Answer: For a protected indoor commercial display system with a verified 230VAC feed and an illustrative 24V concurrent load of 160W, the WEHO LRS-200-24 is a practical first-stage candidate. The current WEHO specification lists the 24V version at 8.8A in the 200W series, with a 215 × 115 × 30 mm enclosure. The example draws 6.67A and reaches 200W after a 25% design margin. That is a selection screen, not final approval: verify the actual display duty cycle, input-selector position, enclosure airflow, ambient derating, startup demand, branch protection and cable voltage drop before release.

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This commercial digital signage selection starts from a measured load schedule, not from a repeated product image. For commercial digital signage procurement, the supply, enclosure and protected branches must be reviewed as one system.

Commercial digital-signage projects rarely consist of one screen and one power lead. A flight-information display, retail video wall or information kiosk may include display modules, media players, interface controllers, network switches, sensors and local monitoring. Some loads run continuously, while others peak during boot or brightness changes. Selecting a 24V supply from the headline wattage alone can therefore produce nuisance resets, poor thermal margin or a cabinet that cannot be serviced.

The WEHO LRS-200 product page identifies LRS-200-24 as the 24V member of the series. This article uses the current enterprise-drive LRS-200 specification as the controlling source for the 24V/8.8A operating point, 215 × 115 × 30 mm mechanical envelope, input-selector ranges and terminal assignment. The calculation is deliberately transparent so an OEM display integrator can replace the example values with its bill of loads.

Start with the loads that operate at the same time

Assume an indoor information-display assembly contains six 24V display modules, four small controller/player loads and a network/monitoring allowance. These numbers are illustrative; they are not presented as a completed WEHO site.

24V load groupExample quantity and unit loadConcurrent power
Display modules6 × 18W108W
Controllers or media players4 × 8W32W
Network and monitoring allowance—20W
Concurrent total160W

At 24V, 160W corresponds to approximately 6.67A. Applying a 25% design margin produces 200W. The current sheet lists LRS-200-24 at 24V and 8.8A in the 200W series, so the example passes an initial current and power screen. The margin does not authorize another unmeasured display branch. It is intended to absorb expected tolerance, operating variation and reasonable engineering uncertainty after the actual load schedule is verified.

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Check both current and power rather than relying on one converted number. The model table’s 24V × 8.8A multiplication is 211.2W, while the family is specified and marketed as a 200W series. For this review, 200W remains the governing nominal power limit. Do not claim 211.2W of continuously usable system power without written confirmation for the exact ordered revision and installation conditions. The illustrative airport service-bay scene visibly shows the source-controlled LRS-200-24 fastened to a backplate beside a two-pole breaker and DIN rail, with a technician providing wider scale; it is not attached by a fabricated DIN clip and is not commissioning evidence.

Treat 230VAC as a verified worked-example input

The LRS-200 specification shows selectable AC ranges. A 230VAC installation belongs to the 180–264VAC selector range. The selector is a safety-critical commissioning item: qualified personnel must confirm the ordered unit, switch position and site voltage before energizing. Applying 230VAC with an incorrect low-voltage selector position can damage equipment and create a hazard.

The drawing identifies a nine-position terminal block. In the current sheet, terminals 1 and 2 are AC input, terminal 3 is protective earth, terminals 4–6 are DC negative and terminals 7–9 are DC positive. That does not replace a project wiring diagram. The panel design still needs suitable upstream protection, protective-earth bonding, conductor sizing, finger-safe segregation and branch fusing for the connected equipment and local code.

Divide the 24V output into protected branches

A display system is easier to commission and maintain when one short circuit does not remove every screen and controller. A practical architecture uses a DC distribution block with branch protection sized for each cable and load group. Separate display banks from controllers and network equipment when their fault behavior or service priority differs.

Calculate the voltage drop for the complete outgoing-and-return conductor length of each branch. At 24V, even a modest conductor resistance can reduce the far-end voltage enough to cause dimming, intermittent booting or controller resets. Measure the most remote load at the highest realistic concurrent demand. Do not increase the supply output to compensate for an undersized cable unless the exact ordered unit permits adjustment and every near-end device remains within its allowed voltage range.

The example also needs a startup test. Several displays and media players may start together after a site power interruption. A steady-state total of 160W does not prove that the system will ride through simultaneous inrush or processor boot transients. If the measured event exceeds the supply or branch-protection behavior, sequence the loads or select a different architecture rather than hiding the symptom with a larger fuse.

Design the enclosure around airflow and service access

The current mechanical envelope is 215 × 115 × 30 mm. Those are product dimensions, not cabinet-clearance dimensions. The LRS-200 uses natural convection and has an open perforated cover, so the enclosure needs clean airflow, appropriate orientation, spacing from adjacent heat sources and protection from conductive debris and accidental contact.

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An airport service plinth and a controlled display-factory service/test area impose different constraints. A public-area plinth prioritizes tamper resistance, low acoustic impact and controlled service access, while a production test area may prioritize thermal logging, fast isolation and repeated load cycling. The test-cart image illustrates that controlled work environment; its instrument display is not a recorded product test or evidence of measured performance. Outside such controlled work, the open-frame supply belongs inside a suitable closed equipment enclosure and should not be exposed directly to passengers, retail customers or loose metalwork.

Allow room at the terminal end for insulated conductors, bend radius, a protective cover and a tool-access path. Keep the AC side separated from low-voltage communications. A technician must be able to inspect terminal tightness and replace the supply without disturbing unrelated branches. If the cabinet is sealed for dust control, calculate the internal temperature rise rather than assuming the perforated supply cover can cool itself.

Why this model fits the example—and when it does not

The LRS series is a sensible rotation choice for a protected indoor, constant-voltage display application. RSP models can add features useful in higher-power or active-PFC designs, but the RSP-320-24 is reserved in this content plan for telecom auxiliary duty. S-series equipment is being used for servo-control coverage. Choosing LRS-200-24 here keeps the product decision tied to the actual 24V display load rather than repeatedly showing the same model across unrelated industries.

Do not approve LRS-200-24 if the system requires another output voltage, a constant-current LED driver, redundant hot-swap operation, a sealed outdoor supply, or a control interface not provided by the ordered unit. Likewise, do not approve it if the actual peak load, thermal test or voltage-drop result falls outside the project limits.

24V Power Supply Selection for Commercial Digital Signage and Information Displays  title=

The deterministic diagram summarizes the example: 160W of concurrent load, a 25% margin to 200W, a protected 24V branch block and the documented product envelope. It is a selection aid, not a construction schematic. Final drawings must specify cable sizes, fuse ratings, disconnects, earthing, terminal covers, enclosure construction and the local compliance requirements for the destination market.

Procurement and commissioning checklist

Before ordering, request the current LRS-200-24 data sheet and a label photograph for the supplied revision. Confirm 24V output, 8.8A model-table current, 215 × 115 × 30 mm envelope and the applicable input-selector arrangement. Record the display modules’ continuous and startup demand, not only their marketing wattage.

During commissioning, verify the 230VAC input and selector position with power isolated, then measure each branch current, the far-end 24V voltage and the supply-enclosure temperature at the highest expected ambient. Cycle the complete display system through cold start, maximum brightness, content changes and a representative power interruption. Document the results so a future replacement does not silently use a different voltage or mechanical revision.

Key Takeaways

  • The illustrative load is 160W or 6.67A at 24V; a 25% margin reaches 200W.
  • The current sheet lists LRS-200-24 at 24V/8.8A with a 215 × 115 × 30 mm enclosure.
  • The 230VAC example requires the correct 180–264VAC selector range to be verified before energizing.
  • The open-frame supply must be installed in a suitable closed enclosure with natural-convection airflow and service clearance.
  • Use protected DC branches and validate voltage drop, startup behavior, temperature and actual simultaneous load.
  • The diagram and application images explain a system concept; they do not replace project wiring or the ordered revision’s instructions.

Conclusion

For the defined 230VAC, 24V, 160W commercial-display example, LRS-200-24 is a reasoned candidate rather than a generic “200W supply” choice. Its suitability depends on the verified selector position, real startup demand, branch design, cabinet temperature and far-end voltage. An OEM integrator or procurement team should release the model only after those project-specific checks are complete.

Frequently Asked Questions

Is the 160W digital-signage load an actual WEHO installation?

No. It is a clearly marked worked example consisting of display modules, controllers and a monitoring allowance. Replace every value with the project’s verified bill of loads.

How much current does the example draw at 24V?

A 160W concurrent load draws approximately 6.67A at 24V. With a 25% design margin the power target becomes 200W.

Can I treat 24V times 8.8A as 211.2W of continuous usable power?

Do not do so by default. The model table states 24V and 8.8A, but the family is a 200W series. This review keeps 200W as the governing nominal power limit unless the exact ordered revision is confirmed otherwise in writing.

What must be checked before connecting a 230VAC site feed?

With power isolated, qualified personnel must confirm the exact ordered label, the site voltage and the input selector in the 180–264VAC position. The project also needs suitable upstream protection and protective-earth bonding.

Can the LRS-200-24 be mounted openly behind a public display?

The supply has an open perforated enclosure and exposed terminals. Install it inside an appropriate closed equipment enclosure with airflow, touch protection, contamination control and service clearance.

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