ALCON 9031 - IES MANIFEST
6-inch Low-Voltage Drive-Over Adjustable LED Well Light
Issued: 2026-10-19

CONFIGURATIONS
Filename | Ordering model | CCT | Watts | Nominal lumens | Integrated lumens
Alcon-9031-27K-5W-500lm-IES.ies | 9031-27K | 2700K | 5W | 500 lm | 500.000000 lm
Alcon-9031-30K-5W-500lm-IES.ies | 9031-30K | 3000K | 5W | 500 lm | 500.000000 lm
Alcon-9031-40K-5W-500lm-IES.ies | 9031-40K | 4000K | 5W | 500 lm | 500.000000 lm
Alcon-9031-50K-5W-500lm-IES.ies | 9031-50K | 5000K | 5W | 500 lm | 500.000000 lm

SHARED DISTRIBUTION AND BASIS
Estimated photometry. Circular 38-degree uplight beam, centered straight upward.
The specification lists one wattage/lumen combination: 5W / 500 lm, with
2700K, 3000K, 4000K and 5000K ordering options. The complete ordering models
are used in filenames to distinguish the four CCT options.
The 38-degree beam comes from the supplied product-details screenshot,
consistent with the product-page beam-spread attribute. The specification
sheet supplies the output, CCT options, construction and +/-40-degree aiming.
No measured candela table or distribution plot is supplied in the specification.
The estimate uses I(theta) = K * cos(180 degrees - theta)^n for 90-180 degrees,
with n = 12.3728238672; K normalizes the serialized, linearly interpolated
candela curve to 500 lm. Beam width is measured at half maximum intensity.
Rotational symmetry and a common curve at all four CCTs are estimation assumptions.
All flux is modeled upward; the body is recessed in the ground.
500 lm is treated as nominal complete-fixture output as listed by Alcon.

POSITION, DIMENSIONS AND REVIT USE
Each file represents one complete fixture, at the centered aiming position.
Type C: vertical 0 degrees is nadir; the peak here is at 180 degrees (zenith).
The +/-40-degree mechanical range is not the optical beam width.
Apply additional aiming in the host application; TILT=NONE is not a rotation command.
Luminous opening dimensions are not specified, so 0 x 0 x 0 m is used for
a point-source photometric representation. Exterior housing dimensions
are not used as emitting dimensions. The dimensioned drawing shows a
6-1/4 inch top diameter, 7-1/4 inch height and 5-1/2 inch sleeve diameter;
the feature line reverses width and height. This does not alter the angular web.
The four files share identical numeric photometry; CCT is identified in the headers.
Set the corresponding light color separately in Revit. Check family orientation
so the 180-degree photometric axis points upward in the project.

FORMAT AND VALIDATION
IESNA:LM-63-2002; TILT=NONE; Type C; absolute photometry; metric dimensional units.
181 vertical angles, 90-180 degrees at 0.5-degree intervals; one horizontal
angle at 0 degrees (rotational symmetry); 181 nonnegative candela values.
ASCII with CRLF endings; all lines under 132 characters; multiplier 1.
Reopened files passed field-count, angle-order, numeric, output, beam-width,
orientation, nominal wattage, and filename/header/configuration checks.
Maximum integrated lumen error: 0.00000015 lm.
Validated full beam: 38.000000 degrees.
Peak intensity: 1064.091962 cd at vertical angle 180 degrees.
Revit and commercial IES viewer imports were not executed in this environment.

SOURCES
Alcon 9031 specification, Rev.02/21/25, page 1:
https://www.alconlighting.com/media/product_files/alcon_lighting/9031_spec-sheet.pdf
Alcon product page:
https://www.alconlighting.com/sophia-9031.html
Supplied product screenshots: image(20261019-190914).png and image(20261019-190928).png.
