Control Power Panel Design

Input control load and voltage to automatically size transformers, select fuses, and generate the system layout.

Enter inputs to automatically resolve transformer groups, fuse selection, schematic layout, and generated data.

Load Clamp100 to 3000 VA
Incoming Voltage240 or 480 V
Control Voltage24 or 120 V
Scaling Behavior1 to 3 transformer groups

Automatic scaling from one transformer to multiple transformers

This layout is generated directly from the same logic used in the workspace.

  • At 600 VA load: 1 transformer group with 750 VA total capacity.
  • At 2300 VA load: 3 transformer groups with 2500 VA total capacity.

Change load or voltage and the layout updates automatically.

Load: 600 VA
Control Power Panel example showing one transformer group at 600 VA load
Load: 2300 VA
Control Power Panel example showing multiple transformer groups at 2300 VA load

Increasing load adds transformer groups and scales fuse protection automatically.

These changes are reflected directly in structured output data.

Load (VA)Transformer GroupsTotal Transformer VA
6001750
230032500

Geometry and data stay aligned because they are generated from the same logic.

Inputs and outputs

Control load and voltage resolve the transformer selection, fuse sizing, and schematic output together.

Inputs

  • Incoming Voltage
  • Control Voltage
  • Control Load

Resolved Outputs

  • Transformer sizing
  • Fuse sizing
  • Schematic layout

Rule-driven transformer and fuse selection

The sizing logic follows lookup tables and threshold rules encoded directly in the model.

Resolved logic

  • Control load is clamped between 100 and 3000 before transformer selection runs.
  • Transformer VA is selected from standard sizes: 100, 150, 250, 500, 750, and 1000.
  • Additional transformer groups appear automatically when the resolved load exceeds the capacity of one unit.
  • Fuse sizing is selected from lookup tables using both VA and incoming voltage.
  • Component visibility follows the resolved transformer count automatically.

Threshold behavior

The first transformer group covers the first 1000 VA of control load. Additional groups stay inactive until the load crosses the next threshold.

That means the example scales from one transformer group to two and then three without redrawing the schematic. Incoming voltage also changes fuse selection because the lookup table is keyed by both VA and voltage.

Generated Data

The resolved panel produces usable engineering data that can be exported and kept aligned with the schematic.

Electrical role, part selection, voltages, transformer VA, and fuse current come from the same resolved logic that drives the layout.

Exported data stays aligned with the evaluated design, so schedules and reporting use the same resolved values.

Generated DataExport-ready component data
CSV / JSON
TagComponentRolePart KeyResolved values
TX-1Control TransformerDistributionTX-240-24-100240 to 24, 100 VA
FU-1FuseProtectionFUSE-1A-250250 V, 1 A
HTerminal BlockDistributionTB-300300 V
CTerminal BlockDistributionTBG-600600 V, grounding

Manual control power design versus LogiDraft

Control power design is a recurring task. The same rules that choose components can also keep the schematic and the generated data consistent.

Manual workflow

Recalculate and redraw each variation

  • Size transformers manually from control load.
  • Recheck fuses separately when voltage changes.
  • Redraw the schematic when another transformer group is needed.
  • Maintain BOM data in separate notes or spreadsheets.
LogiDraft workflow

Resolve the system from inputs

  • Transformer sizing follows lookup logic based on clamped load.
  • Fuse sizing follows the correct voltage-aware table.
  • Components appear and disappear from the schematic automatically.
  • Structured outputs stay aligned with the same evaluated model.

Open the example and see the system in action

Open the example, change load or voltage, and review the updated result.