1271LEDDE - Dimmer JUNG - Free user manual and instructions

Product Type	LED Touch Dimmer Insert
Brand	JUNG
Model	1271LEDDE
Category	Dimmer
Rated Voltage	AC 230 V~
Mains Frequency	50 / 60 Hz
Standby Power	max. 0.5 W
Power Loss	max. 4 W
Ambient Temperature	+5 ... +25 °C
Connected Load (Incandescent)	20 ... 120 W
Connected Load (HV Halogen)	20 ... 120 W
Connected Load (HV LED)	7 ... 100 W (typical)
Connected Load (Compact Fluorescent)	7 ... 100 W (typical)
Mixed Load (Ohmic + HV LED)	7 ... 100 W (typical)
Mixed Load (Ohmic + Compact Fluorescent)	7 ... 100 W (typical)
Dimming Principle	Phase cut-on (leading edge)
Soft Start	Yes, bulb-preserving
Switch-on Brightness Save	Yes, programmable
Minimum Brightness Setting	Adjustable via setter
Protection Features	Electronic short circuit, over-temperature
Extensions	2-wire unlimited, 3-wire up to 5, non-illuminated buttons unlimited
Connection Type	Single stranded max 4 mm², finely stranded with/without sleeve
Safety	Installation by skilled persons only; disconnect before work
Warranty	As provided by law

Frequently Asked Questions - 1271LEDDE JUNG

What types of lamps can I dim with the JUNG 1271LEDDE?

The dimmer is suitable for incandescent lamps, HV halogen lamps, HV LED lamps, and compact fluorescent lamps (CFLs). It can operate mixed loads of ohmic (incandescent/HV halogen) with HV LED or CFL, but not mixed HV LED and CFL. Only use dimmable lamps and lamps of the same manufacturer and type.

Why do my LED lamps flicker even when dimmed?

Flickering can be caused by non-dimmable lamps, a minimum brightness set too low, or the dimmer requiring a neutral conductor (if not connected). Check lamp compatibility, increase minimum brightness, or connect a neutral conductor. Also, power grid pulses may cause flicker, which is not a device defect.

How do I save the switch-on brightness?

Set the light to the desired brightness, then press the entire button surface for more than 3 seconds. The lighting will briefly switch off and then on again to confirm the saved brightness. This works with pushbutton covers, not with installation buttons.

Can I install the dimmer without a neutral conductor?

Yes, the dimmer can operate without a neutral conductor. However, when doing so, the minimum load for incandescent/HV halogen lamps increases to 50 W, and there is a higher chance of incompatibility with HV LED lamps. It is recommended to connect a neutral conductor if possible.

What should I do if the dimmer switches off and won't turn on?

This could be due to over-temperature protection or short circuit protection. Disconnect the mains, reduce the connected load, let the dimmer cool for at least 15 minutes, then switch back on. If short circuit, eliminate the short circuit first. Also check if the minimum brightness is set too low.

How do I adjust the minimum brightness?

Only a skilled person should do this. With the device connected and power on, use an insulated tool to turn the setter (4) anti‑clockwise until the lamp just turns on. Then turn slightly further to ensure reliable startup. If too bright, turn clockwise back to stop and repeat.

Can I use the dimmer with transformers?

No, the device is not designed for operation with transformers. Only connect lamps directly.

What is the maximum cable length for extensions?

The total length of extension unit cable and power cable each must not exceed 100 meters.

Is the dimmer compatible with illuminated pushbuttons?

Illuminated installation buttons may only be connected if they have a separate neutral conductor (N) terminal.

What accessories are available for this dimmer?

The standard accessory is a center plate (e.g., Art. No. ..1561.07..). Various covers and frames can be used, and extension inserts (2‑wire and 3‑wire) are available for multi‑way control.

USER MANUAL 1271LEDDE JUNG

LED touch dimmer insert

Art. No. 1271 LEDDE

Operating instructions

1 Safety instructions

Electrical equipment may only be installed and fitted by electrically skilled persons.

Serious injuries, fire or property damage possible. Please read and follow manual fully.

Danger of electric shock. Always disconnect before carrying out work on the devise or load. At the same time, take into account all circuit breakers that supply dangerous voltage to the device or load.

Danger of electric shock. Device is not suitable for disconnection from supply voltage. The load is not electrically isolated from the mains even when the device is switched off.

Do not connect any LED or compact fluorescent lamps that are not specifically suitable for dimming. Device can be damaged.

Do not connect any lights with integrated dimmers. Device can be damaged.

Danger of electric shock. Do not operate the insert without a cover.

These instructions are an integral part of the product, and must remain with the end customer.

2 Device components

Figure 1: Device components

(1) FM insert
(2) Frame
(3) Cover
(4) Setter, minimum brightness
(5) Terminals

3 Function

Intended use

• Switching and dimming of incandescent lamps, HV halogen lamps, HV LED and compact fluorescent lamps
• Suitable for mixed-load operation of ohmic load (incandescent lamps, HV halogen lamps) and HV LED lamps
• Suitable for mixed-load operation of ohmic load (incandescent lamps, HV halogen lamps) and compact fluorescent lamps
• Installation in appliance box according to DIN 49073
• Operation with suitable cover

No mixed-load operation of HV LED and compact fluorescent lamps. Only connect lamps of one manufacturer and of the same type.

i No operation with transformers.

i HV-LED and compact fluorescent lamps generate high pulsed currents, when they are operated in the leading edge phase control. Depending on the design and power rating of these lamps, the connected load of the specified values could vary.

Product characteristics

• Device works according to the phase cut-on principle
• Device can also be operated without neutral conductor
• Bulb-preserving soft start
• Switch-on brightness can be saved permanently
• Minimum brightness can be set
• Connection of extensions possible
• Power failures of more than 1 second will cause the device to switch off
• Electronic short circuit protection with permanent switch-off
• Electronic over-temperature protection

i Flickering of the connected lamps due to undershoot of the specified minimum load or through centralised pulses from the power stations. This does not represent any defect in the device.

4 Operation

These instructions describe operation with a pushbutton cover (see Accessories). Operation with a different cover is described in the instructions for the cover in question. Operation on the main device or 2-wire extension is identical.

i Extension operation is only possible if there is a cover fitted on the main device.

Switch light

■ Press button for less than 0.4 seconds.

Adjust the brightness

Light is switched on.

■ Press button at top for longer than 0.4 seconds.
The light gets brighter up to maximum brightness.
■ Press button at bottom for longer than 0.4 seconds.
Light gets darker to minimum brightness.

i Installation button: the light becomes brighter up to maximum brightness, remains there briefly and becomes dimmer down to minimum brightness, remains there briefly and becomes brighter again. This process repeats for as long as the push-button remains pressed.

Switch light on with minimum brightness

■ Press button at bottom for longer than 0.4 seconds.

Save switch-on brightness

■ Set light to the required brightness.
■ Press button over entire surface for longer than 3 seconds.

Switch-on brightness is saved. For confirmation the lighting switches off briefly and then on again to the saved switch-on brightness.

i An installation button cannot be used to save the switch-on brightness.

5 Information for electrically skilled persons

5.1 Fitting and electrical connection

DANGER!

Electrical shock when live parts are touched.

Electrical shocks can be fatal.

Before carrying out work on the device or load, disengage all the corresponding circuit breakers. Cover up live parts in the working environment.

Fitting and electrical connection

Figure 2: Connection diagram with optional extensions

(1) FM insert
(6) Extension insert, 2-wire
(7) Extension insert, 3-wire
(8) Installation button, NO contact
HV-LED lamps and compact fluorescent lamps: Only connect lamps of one manufacturer and of the same type.
Connect 16 A maximum of 300 W HV LED lamps or compact fluorescent lamps per circuit breaker.

■ Connect FM insert according to connection diagram (figure 2).

If no neutral conductor is available at the installation location, then the dimmer can also be operated without a neutral conductor. In this case, there is an increased likelihood of unsuitable combinations of dimmer and HV LED lamp.
i For extension units use the electric circuit of the main device.
i Illuminated installation buttons may only be connected if they have a separate N terminal.

■ Connect the extensions, optional.

■ Install insert in appliance box, terminals must be at the bottom.

■ Perform commissioning

Do not attach or replace the cover under voltage, otherwise this might cause a malfunction.

■ Attach the frame (2) and the top (3).
■ Switch on mains voltage.

5.2 Commissioning

Setting the minimum brightness

The minimum brightness can be set by an electrically skilled person as required, for example if the light flickers at low brightness.

According to EN 60669-2-1 (01.2000), lamp brightness should be detectable over the whole load area, with darkness at -10 % rated voltage in the minimum brightness position, in order to distinguish between the minimum brightness and being switched off.

DANGER!

Electrical shock when live parts are touched.

Electrical shocks can be fatal.

Use only insulated tools to set the minimum brightness! Cover up live parts in the working environment.

The device is connected as described above and fitted in an appliance box. The frame and cover are not mounted.

■ Switch on mains voltage.
■ Adjust the setter (4) (figure 1) by approx. 1/4 of a rotation.
Light switches on at minimum brightness.
■ Turn the setter in a clockwise direction up to the end stop.
Light switches off.
■ Slowly turn the setter in an anti-clockwise direction, until the light switches on. Turn the setter slightly further, so that the light is certain to switch on at minimum brightness.

If the minimum brightness was set too brightly, turn the setter back to the end stop in a clockwise direction and reset the minimum brightness.

The minimum brightness is set.

■ Switch off mains voltage.
■ Mount frame and cover.
■ Switch on mains voltage again.

6 Appendix

6.1 Technical data

Rated voltage AC 230 V \~

Mains frequency 50 / 60 Hz

Standby power max. 0.5 W

Power loss max. 4 W

Ambient temperature +5 ... +25 °C

Contact type ε

Connected load

Incandescent lamps 20 ... 120 W

HV halogen lamps 20 ... 120 W

When operated without a neutral conductor, the minimum load for incandescent lamps and HV halogen lamps increases to 50 W.

HV-LED lamps typical 7 ... 100 W

Compact fl lamp. typical 7 ... 100 W

Mixed load

Ohmic and HV LED typical 7 ... 100 W

Ohmic & compact fl lamp. typical 7 ... 100 W

HV-LED and compact fl lamp. not permitted

Power reduction

per 5°C in excess of 25°C -10 %

when installed in wooden or dry construction walls

when installed in multiple combinations -20 %

Power boosters none

Connection

single stranded max. 4 mm²

finely stranded without conductor sleeve max. 4 mm ^2

finely stranded with conductor sleeve max. 2.5 mm ^4

Number of extension units

Extension insert, 2-wire unlimited

Extension insert, 3-wire 5

Non-illuminated installation buttons unlimited

Total length of extension unit cable max. 100 m

Total length power cable max. 100 m

-15%

6.2 Troubleshooting

Connected lamps switch off in the lowest dimming position or flicker

The set minimum brightness is too low.

Increase minimum brightness.

Connected lamps flicker

Cause 1: Lamps are not dimmable.

Check manufacturer's instructions.

Exchange lamps for another type.

Cause 2: Dimmer requires the connection of a neutral conductor for operation with the connected lamp.

Connect a neutral conductor.

Replace the lamps with a type for which the dimmer does not require the connection of a neutral conductor.

Connected lamps do not switch on in the lowest dimming position or only after a delay

The set minimum brightness is too low.

Increase minimum brightness.

Connected lamps in the lowest dimming position are too bright; dimming range is too small

Cause 1: The set minimum brightness is too high.

Reduce minimum brightness.

Cause 2: Dimming principle LED phase cut-on does not optimally match the connected HV LED or compact fluorescent lamps.

Exchange lamps for another type.

Dimmer has switched off

Cause 1: overheating protection has tripped.

Disconnect dimmer from mains, also switch associated off circuit breakers.

Reduce the connected load.

Let dimmer cool down for at least 15 minutes.

Switch circuit breakers and dimmer on again.

Cause 2: short-circuit protection has tripped.

Switch off the mains supply.

Eliminate short-circuit.

Switch circuit breakers and dimmer on again.

i Short-circuit protection is not based on a conventional fuse, no metallic separation of the operational current.

Dimmer does not switch on in combination with several lamps.

Short-circuit protection has tripped.

Reduce minimum brightness.

Reduce number of lamps.

Reduce connected load.

Exchange lamps for another type.

6.3 Accessories

Standard centre plate Art. No. ..1561.07..

6.4 Warranty

We reserve the right to make technical and formal changes to the product in the interest of technical progress.

We provide a warranty as provided for by law.

Please send the device with a description of the defect to our central customer service office.

ALBRECHT JUNG GMBH & CO. KG

Vollmestraße 1

58579 Schalksmühle

Telefon: +49.23 55.8 06-0

Telefax: +49.23 55.8 06-2 04

[e-mail]

www.jung.de

Service Center

Kupferstr. 17-19

44532 Lünen

Germany