Power Architecture Decision Guide
Central vs Local Power Supply for Motorized Shades: Distribution and Service Decision
Compare centralized and local motorized-shade power concepts by equipment location, service access, routing, fault domain and project coordination.
Direct answer
What should the buyer do?
Central and local power architectures distribute equipment, cabling, service access and failure impact differently. Select the concept only after the exact motor and power equipment are known and a qualified electrical professional has reviewed circuits, protection, cable sizing, voltage drop and local code. This guide does not provide universal capacity or distance rules.
Why this matters
A central location can simplify access to shared equipment but increase distribution coordination and fault scope. Local conversion can shorten motor-side distribution but requires accessible equipment near openings. The right choice depends on the selected system and building.
Central vs Local Power Supply for Motorized Shades: Distribution and Service Decision
| Decision factor | Central concept | Local concept |
|---|---|---|
| Equipment location | Shared electrical/service area | At or near opening/zone |
| Service access | Concentrated, planned access | Distributed access points |
| Cable routing | Longer distribution coordination may be required | More local feeds/conversion points may be required |
| Fault domain | One device may affect a wider group | A fault may be limited to one opening/zone |
| Space / heat | Central enclosure and ventilation reviewed | Local recess/access reviewed |
| Commissioning | Grouped allocation and labeling | Distributed identity and access |
| Future replacement | Central compatibility and allocation | Local physical/access compatibility |
Information to collect
- Opening/system groups
- Exact motor ratings and selected power equipment
- Available site supply
- Proposed equipment locations
- Cable routes and service access
- Fault-domain and maintenance priorities
What Saiwenna can review
Saiwenna can provide documented selected-motor information and help identify equipment-dependent questions. Final electrical design and approval belong to the appointed qualified electrical professional.
Documented examples: RC-MB10 materials identify CM-50-E-R at 24 V DC, 38 W, 1.6 A and CM-10-QC at 230 V/50 Hz, 133 W, 0.57 A. These values do not define a central/local PSU topology, cable size, distance, output count or simultaneous-load rule.
Typical Planning Scenario
Typical Planning Scenario — compare two concepts against the same opening list and selected equipment, then record the accepted electrical design. Not a completed Saiwenna project.
Related project resources
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