Model LU1920Edition EN · 09 / 2026 · V1
Document No. LU1920-EN-01

LED Beam Moving Head · Pixel Control

LU1920

19 × 20 W RGBW beam with motorised zoom 5.8° – 55°, lens rotation and pixel mapping

Operating manual. Please read in full before first use and keep for future reference.

Light source

19 × 20 WRGBW 4-in-1 LED

Zoom

5.8° – 55°motorised linear

DMX

21 – 997 channel modes

Pan / tilt

540° / 270°16-bit resolution

Foreword

00Welcome

Thank you for choosing the Luminus LU1920 — a powerful LED beam moving head with 19 RGBW LEDs, motorised zoom, lens rotation and full individual LED control (pixel mapping).

This document describes set-up, operation, care and troubleshooting of the fixture. Read the manual — in particular the chapter Safety Instructions — in full before first use and keep it with the fixture. If the fixture is passed on to third parties, the manual must be included.

0.1Symbols used

WarningMarks situations in which persons may be injured or the fixture may be damaged. Always observe these instructions.

NoteMarks useful additional information, tips or explanations that aid understanding.

Danger — voltageMarks situations involving danger to life from electric current. Work on live parts is reserved for qualified personnel only.

0.2Intended use

The LU1920 is a professional lighting fixture for indoor use on stages, in discotheques, in television and film studios and at events. Any other use — in particular outdoors or in humid environments (IP20) — is considered improper and voids the warranty.

0.3Package contents

1 × Luminus LU1920 LED beam moving head
2 × Omega bracket with quick-lock
1 × PowerCon power cable · 1 × Safety cable
1 × Operating manual

Table of Contents

—Overview

01Safety Instructions04
1.1General safety04
1.2Installation and rigging05
02Technical Specifications06
03Set-up07
3.1Step-by-step set-up07
3.2DMX cabling & power linking08
04Menu Map09
05DMX Channels10
5.1Mode overview & effect reference10
5.221-channel mode11
5.323-channel mode12
5.435-channel mode & pixel modes (78 – 99 CH)13
06Troubleshooting14
07Cleaning & Maintenance15
—CE Declaration of Conformity15

Chapter 01

01Safety Instructions

Read this chapter in full before first use. Damage caused by disregarding these instructions is excluded from the warranty.

1.1General safety

Danger to life from electric currentDo not touch any live wires during operation. Open the fixture only at least 5 minutes after switching off and after disconnecting the mains supply. Before connecting, make sure that voltage and frequency match the rating label (AC 100 – 240 V, 50 / 60 Hz).

The protective earth conductor (yellow / green) must be properly earthed to avoid electric shock.
The fixture is intended for indoor use only — IP20. Never expose it to rain, splash water or high humidity.
Ensure adequate ventilation — at least 50 cm from adjacent surfaces; do not cover any ventilation slots.
Keep flammable materials (curtains, decoration) at least 1.2 m away from the fixture — fire hazard.
Disconnect the fixture from the mains before any service or maintenance work.
Always use a safety cable when rigging. Never carry the fixture by the head — always by the base.
Replace damaged housings or lenses before further use. There are no user-serviceable parts inside — repairs by authorised personnel only.
Never look directly into the LED source while the fixture is switched on.
In the event of serious operating problems, stop using the fixture immediately and contact service.

High surface temperatureThe housing temperature can reach up to 85 °C during operation. Do not touch the housing bare-handed during operation. After switching off, allow the fixture to cool for at least 15 minutes before handling. Maximum ambient temperature Ta = 45 °C; permissible range −25 °C to +45 °C.

1.2Installation and rigging

The LU1920 is mounted to a truss or stand via the screw holes in the base using the supplied Omega brackets. Installation must be carried out by qualified personnel. The LU1920 can be operated in three positions: hanging (head down) from a ceiling, sideways on the truss or standing on a level surface.

Risk of fallingThe supporting structure must be able to hold at least 10 times the fixture weight without deformation. Additionally secure the fixture with a safety cable rated for at least 12 times the fixture weight. Never stand directly under the fixture during installation, removal or servicing.

Overhead rigging requires extensive experience — including load calculation, suitable installation material and regular safety inspection of material and fixture.
Fix the fixture so that it cannot vibrate or slip during operation.
Use only the dedicated eyelets on the base for the safety cable — never the carrying handles.
The installation must be inspected by a competent person at least once a year.

Mounting with Omega brackets

Fit the clampBolt one clamp with M12 bolt and nut to each Omega bracket.
Insert the Omega bracketsInsert the quick-locks of the Omega brackets into the openings in the base and turn them fully clockwise to lock. Fit the second bracket in the same way.
Hang the fixtureHang the fixture on the truss via the clamps and tighten the bolts.
Secure the safety cableRoute the safety cable through the opening in the base plate and over the truss; insert and tighten the locking screw.

Chapter 02

02Technical Specifications

Light source & optics

Light source	19 × 20 W RGBW 4-in-1 LED
Power consumption	350 W
Beam angle	5.8° – 55°
Zoom	motorised linear
Lens rotation	CW / CCW, continuous
Dimmer	0 – 100 % continuous, 4 curves
Strobe	1 – 25 Hz, variable

Movement

Pan	540° / 360° selectable
Tilt	270°
Resolution	8 / 16 bit

Power supply

Voltage	AC 100 – 240 V (auto-sensing)
Frequency	50 / 60 Hz
Connector	PowerCon IN / OUT

Control

Protocol	DMX-512 / RDM
Channel modes	21 / 23 / 35 / 78 / 92 / 97 / 99
Operating modes	DMX · Master / Slave · Auto · Sound
Data connection	3- & 5-pin XLR IN / OUT
Display	1.8″ TFT colour display, 180° rotatable

Mechanical

Dimensions (W × D × H)	254 × 338 × 375 mm
Net weight	8.5 kg
IP rating	IP20 (indoor only)
Ambient temperature	−25 – 45 °C

Packaging

Carton (1 unit)	10 kg
Flight case 4-in-1	760 × 575 × 600 mm · 73 kg

2.1Features

Pixel control: each of the 19 LEDs can be addressed individually — display arrows, numbers, letters and patterns.
Highly efficient optical system with flower effect and zoom.
Temperature-controlled fan speed (Auto / Low / High); LED temperature protection adjusts fan speed automatically to the head temperature.

Automatic voltage detectionThe LU1920 has an automatic voltage switch and detects the applied mains voltage by itself — the fixture can be operated worldwide without manual switching.

Chapter 03

03Set-up

3.1Overview & control buttons

LED head19 × 20 W RGBW with zoom & lens rotation
YokeCarries the head, integrates the tilt drive
TFT display & buttons1.8″ colour display with 5 control buttons
DMX IN / OUT3- & 5-pin XLR, data can be linked through
PowerCon IN / OUTLocking mains connection, can be linked through
Fuse & switchFixture fuse next to PowerCon IN, ON / OFF

Button	Function
MENU	Select programming functions
UP	Forward in the selection
DISPLAY	Show menus and the selected function
DOWN	Backward in the selection
ENTER	Confirm / save the selection

3.2Step by step

Unpack and inspectCarefully remove the fixture from the packaging and check for transport damage. Keep the packaging for transport or return shipment.
Choose the mounting locationWell-ventilated location with at least 50 cm clearance on all sides and 1.2 m from flammable materials. Supporting structure: 10 times the fixture weight.
Fit the Omega bracketsInsert both Omega brackets with the quick-locks into the base and turn them fully clockwise (see 1.2).
Attach the safety cableRoute the safety cable (min. 12 times the fixture weight) through the opening in the base plate and over an independent anchor point.
Connect the DMX cableConnect the DMX output of your controller to DMX IN (3- or 5-pin); link through to the next fixture via DMX OUT (see 3.3).
Connect the power cablePlug in and lock the PowerCon cable. Can be linked through via Power OUT — max. 3 fixtures at 120 V, max. 7 fixtures at 240 V.
Set channel mode & DMX addressSelect the channel mode in the “Channel” menu and set the start address via “Address” (see chapter 4).
Wait for the resetAfter power-on the fixture performs a reset. Wait until the head is in its home position before controlling it.

3.3DMX cabling

The LU1920 is controlled via DMX-512. Controller and fixture require a 3- or 5-pin XLR connection for data input and output. Use only shielded DMX cables with 110 – 120 Ω impedance — no microphone cables.

XLR pinout

Pin 1	Shield / GND
Pin 2	Data − (DATA −)
Pin 3	Data + (DATA +)
Pin 4 / 5	not used (5-pin)

Do not connect the shield to the ground lug — risk of short circuit.

Address calculation (example 21 CH)

Fixture	Address	Channels used
Fixture 1	001	001 – 021
Fixture 2	022	022 – 042
Fixture 3	043	043 – 063

3.4Power linking & master / slave

Several fixtures can be linked through via the PowerCon IN / OUT sockets. Without an external controller, slave fixtures follow a master that plays an auto or sound program (“Mode” menu).

Maximum fixtures per circuitAt 120 V a maximum of 3 fixtures, at 240 V a maximum of 7 fixtures may be linked through. Once this number is reached, use a new circuit. Note that the power consumption of other fixtures in the chain may vary.

Chapter 04

04Menu Map

The 1.8″ TFT colour display on the base shows the current menu level. Five buttons are used for navigation; the display can be rotated by 180° (“Reverse → Display” menu).

Setting the DMX address

Navigate to “Address” with MENU and confirm with ENTER.
The display shows “DMX Address: 001”. Change the value with UP / DOWN.
Save and exit with ENTER — exit without saving with MENU.

NoteThe “Adjust” sub-menu is password protected to prevent accidental changes to the fine calibration.

4.1Menu structure

#	Menu item	Range / options	Function
1	Address	001 – 512	DMX start address
2	Channel	21 · 23 · 35 · 78 · 92 · 97 · 99 CH	Select DMX channel mode
3	Mode	DMX 512	Control via DMX controller
		Auto · Master / Alone	Auto show program
		Sound · Master / Alone	Sound-activated
		Manual — Pan, Tilt, Focus, Rota, R, G, B, W, Strobe 0 – 255	Manual control (Focus = zoom, Rota = lens rotation)
4	Pan Degree	540° · 360°	Pan range limit
5	Reverse	Pan · Tilt · Display — Yes / No	Reverse direction / display
6	Mic Sense	001 – 100	Microphone sensitivity (sound)
7	Language	English · Chinese	Menu language
8	No Signal	Black Out · Hold	Behaviour on DMX loss
9	Fan Set	Auto · Low · High	Fan mode
10	Reset	Yes · No	Trigger reset
11	Default	Yes · No	Restore factory settings
12	Information	CH Value · Temp °C · Soft V.xxx	Channel values, LED board temperature, software version
13	Adjust (password)	Pan, Tilt, Focus, Rota, R, G, B, W — 0 – 255	Fine calibration

Chapter 05

05DMX Channels

5.1Mode overview

The LU1920 offers seven DMX channel modes. The compact modes (21 / 23 / 35 CH) control all LEDs together; the pixel modes (78 – 99 CH) address each of the 19 LEDs individually.

Channels	Mode	Content
21	Colour compact	RGBW mixing, macro colours, strobe, pan / tilt, zoom, lens rotation
23	Movement & pattern	Movement first, plus static / dynamic patterns and back colour
35	Extended	Full pattern effect block with foreground / background strobe
78	Pixel RGB	21-CH base + 19 × RGB individually (pixel mapping)
92	Pixel RGB +	35-CH base + 19 × RGB individually
97 / 99	Pixel RGBW	21- or 23-CH base + 19 × RGBW individually (full pixel control)

5.1.1Effect reference

The following value ranges apply across all modes for the respective effect channels.

Channel / function	DMX value
Color Temperature — none	0 – 15
Color Temperature — RGBW round mix / full mix / 12 colour temperatures	16 – 175 / 176 – 195 / 196 – 255
Macro Color — none	0 – 9
Macro Color 1 – 25	10 – 255
Static Pattern — none	0 – 9
Monochrome patterns 1 – 67	10 – 210
Mixed-colour patterns 1 – 15	211 – 255

Channel / function	DMX value
Strobe — light on	0 – 3
Synchronous strobe, 1 – 25 Hz, slow → fast	4 – 203
Random strobe	204 – 255
Dynamic Pattern — forward	0 – 127
Dynamic Pattern — backward	128 – 255
Lens rotation CW / CCW	156 – 255

Macro colours in steps of 10 values (1 colour per step). Patterns: monochrome in 3-value steps, dynamic patterns in 5-value steps.

5.221-channel mode

Compact standard mode: common RGBW mixing with macro colours, strobe, movement, zoom and lens rotation.

CH	Function	Value	Description
01	Red	0 – 255	Red dimming dark → bright
02	Red Adjustment	0 – 255	Red fine adjustment
03	Green	0 – 255	Green dimming dark → bright
04	Green Adjustment	0 – 255	Green fine adjustment
05	Blue	0 – 255	Blue dimming dark → bright
06	Blue Adjustment	0 – 255	Blue fine adjustment
07	White	0 – 255	White dimming dark → bright
08	White Adjustment	0 – 255	White fine adjustment
09	Color Temperature	0 – 15	No function (RGBW individual channels active)
		16 – 175	8 intermediate steps of an R→G→B→W round mix
		176 – 195	R100 % G100 % B100 % W100 % (full mix)
		196 – 255	12 fixed colour temperatures, 2800 K – 8000 K
10	Macro Color	0 – 9	No function
10	Macro Color	10 – 255	25 macro colours, 10 values each (colour n = 10+(n−1)×10 … 19+(n−1)×10)
11	Strobe	0 – 3	Light on (no strobe)
		4 – 203	Synchronous strobe, 1 – 25 Hz, slow → fast
		204 – 255	Random strobe
12	Dimmer	0 – 255	Dark → bright, linear
13	Dimmer Adjust	0 – 255	Dimmer fine adjustment
14	Pan	0 – 255	Pan movement
15	Pan Adjustment	0 – 255	Pan fine (16 bit)
16	Tilt	0 – 255	Tilt movement
17	Tilt Adjustment	0 – 255	Tilt fine (16 bit)
18	Dimming Mode	0 – 49	Mode 1
		50 – 99	Mode 2
		100 – 149	Mode 3
		150 – 255	Mode 4
19	Reset	0 – 250	No function
19	Reset	251 – 255	Trigger reset (hold 5 s)
20	Zoom	0 – 255	Narrow (5.8°) → wide (55°)
21	Lens Rotation	0 – 155	0 / 60° fixed position
		156 – 205	Clockwise, continuous
		206 – 255	Counter-clockwise, continuous

5.323-channel mode

Movement-oriented mode: pan / tilt first, with zoom, lens rotation, static and dynamic patterns and a separate background colour (back colour).

CH	Function	Value	Description
01	Pan	0 – 255	Pan 0 – 540°
02	Pan Adjustment	0 – 255	Pan fine (16 bit)
03	Tilt	0 – 255	Tilt 0 – 270°
04	Tilt Adjustment	0 – 255	Tilt fine (16 bit)
05	Pan / Tilt Speed	0 – 255	Fast → slow
06	Zoom	0 – 255	Narrow → wide
07	Lens Rotation	0 – 155	0 / 60° fixed position
		156 – 205	CW continuous, fast → slow
		206 – 255	CCW continuous, slow → fast
08	Dimmer	0 – 255	Dark → bright, linear
09	Strobe	0 – 3	Light on (no strobe)
		4 – 203	Synchronous strobe, 1 – 25 Hz, slow → fast
		204 – 255	Random strobe
10	R Dimming	0 – 255	Red dark → bright
11	G Dimming	0 – 255	Green dark → bright
12	B Dimming	0 – 255	Blue dark → bright
13	W Dimming	0 – 255	White dark → bright
14	Color Temperature	0 – 15	No function (RGBW individual channels active)
		16 – 175	8 intermediate steps of an R→G→B→W round mix
		176 – 195	R100 % G100 % B100 % W100 % (full mix)
		196 – 255	12 fixed colour temperatures, 2800 K – 8000 K
15	Macro Color	0 – 9	No function
15	Macro Color	10 – 255	25 macro colours, 10 values each (see 5.1.1)
16	Static Pattern	0 – 255	Monochrome 1 – 67 / mixed colour 1 – 15
17	Dynamic Pattern	0 – 255	Mono / mixed colour, dynamic
18	Dynamic Pattern Speed	0 – 127	Forward, fast → slow
18	Dynamic Pattern Speed	128 – 255	Backward, slow → fast
19	Back Color R	0 – 255	Background red
20	Back Color G	0 – 255	Background green
21	Back Color B	0 – 255	Background blue
22	Back Color W	0 – 255	Background white
23	Reset	0 – 250	No function
23	Reset	251 – 255	Trigger reset (hold 5 s)

5.435-channel mode

Extended mode with a full pattern effect block, foreground and background strobe and separate background control. Channels 01 – 21 correspond to the 21-channel mode (5.2); value ranges see effect reference (5.1.1).

CH	Function	Description
01 – 21	as 21-CH mode	RGBW + adjust · colour temp · macro · strobe · dimmer · pan / tilt · dimming mode · reset · zoom · lens rotation
22	Pattern Rotation	Mono / mixed colour, dynamic pattern
23	Pattern Effect Speed	Forward / backward (with CH 22)
24	Pattern Effect Fade	Cross-fade of the pattern effect
25 – 28	Pattern Back R / G / B / W	Pattern effect colour (foreground)
29	Pattern Dimming	Pattern 0 – 100 % dimming
30	Background Dimming	Background 0 – 100 % dimming
31	Static	Static display
32	Pattern Movement	Pattern movement (with CH 22)
33	Prospects Strobe	Foreground strobe
34	Background Strobe	Background strobe
35	Background Pattern Selection	Select background pattern

5.5Pixel modes (78 / 92 / 97 / 99 CH)

The pixel modes control each of the 19 LEDs individually (pixel mapping) — for arrows, numbers, letters and custom patterns. They consist of a base block (identical to the compact modes) followed by a pixel block with the individual LED channels.

Mode	Base block	Pixel block (per LED)
78 CH	21 channels	19 × R, G, B → CH 22 – 78
92 CH	35 channels	19 × R, G, B → CH 36 – 92
97 CH	21 channels	19 × R, G, B, W → CH 22 – 97
99 CH	23 channels	19 × R, G, B, W → CH 24 – 99

Pixel block structure (example 99 CH)

NoteModes 78 and 92 CH provide only R · G · B per LED (no separate white per pixel). For full individual white control, select 97 or 99 CH.

Chapter 06

06Troubleshooting

Below you will find solutions to the most common problems. For other faults, contact your dealer or Luminus service.

6.1Fixture does not respond — no light, fan off

#	Check
1	Check the mains connection and main fuse.
2	Measure the mains voltage at the PowerCon connector (AC 100 – 240 V).
3	Check the power LED on the fixture.

6.2Fixture does not respond to the DMX controller

#	Check
1	The DMX LED on the display must light up. Otherwise check XLR cables and connections.
2	If the DMX LED lights but there is no response: check DMX address, channel mode and DMX polarity.
3	Intermittent dropouts: check the XLR pins on the connectors and on the PCB of the fixture or the preceding one.
4	Test with a different controller to rule it out as the source of the fault.
5	Do not run DMX cables parallel to high-voltage cables — interference possible.

6.3One channel does not work correctly

The corresponding stepper motor may be damaged or the cable to the PCB may be broken.
The motor driver IC on the PCB may be defective.
These faults require repair by service — no self-repair.

Repairs by qualified personnel onlyNever attempt to open or repair the fixture yourself. Repairs carried out by unqualified persons can lead to damage or malfunction and void the warranty.

Chapter 07

07Cleaning & Maintenance

Regular cleaning of the optics is essential for light output. Humid, smoky or dusty environments require shorter intervals.

Before cleaning & before openingDisconnect the fixture completely from the mains and let it cool for at least 15 minutes. Before replacing the LED unit, the mains supply must be disconnected before the cover is opened.

Cleaning

Wipe the outside of the lens with a soft cloth and special glass cleaner — at least every 30 days.
Clean the interior of the fixture with a vacuum cleaner or (oil-free) compressed air — at least twice a year.
Allow all parts to dry completely before reconnecting.

Storage

Store in the original packaging or flight case. Storage temperature −25 °C to +50 °C, relative humidity < 70 %, non-condensing. Clean the optics and check screw connections before stowing.

Replacing the fuse

Disconnect from the mainsUnplug the PowerCon cable from any power source.
Open the fuse holderLoosen the fuse holder next to the PowerCon input with a Phillips screwdriver.
Replace the fuseRemove the defective fuse and insert a new one of the same type. Screw the holder back in.

Appendix

—EU Declaration of Conformity

The manufacturer declares under its sole responsibility that the Luminus LU1920 complies with the relevant EU harmonisation legislation (LVD 2014/35/EU, EMC 2014/30/EU, RoHS 2011/65/EU). The signed EU Declaration of Conformity is available as a separate document and can be requested from Lexvision GmbH, Waldweg 26, 54636 Sefferweich, Germany, by email to verkauf@lexvision.de or by phone on +49 (0) 651 14567727.

Luminus LU1920 · Operating Manual · Edition EN 09/2026 · V1 · Document No. LU1920-EN-01 · Subject to technical changes and errors.