GW90750 - Dimmer Gewiss - Free user manual and instructions

Technical Features	Gewiss GW90750 dimmer, compatible with incandescent and halogen lamps, maximum power of 500W.
Usage	Allows adjustment of light intensity to create different atmospheres in indoor spaces.
Maintenance and Repair	Regularly check electrical connections and clean contacts to ensure optimal operation.
Safety	Comply with applicable electrical standards during installation. Do not exceed the recommended maximum power.
General Information	Product designed for indoor installation, with a compact and modern design. Manufacturer's 2-year warranty.

Frequently Asked Questions - GW90750 Gewiss

How to install the Gewiss GW90750 dimmer?

To install the Gewiss GW90750 dimmer, first turn off the power supply. Connect the wires according to the diagram provided in the user manual, making sure to respect the polarities. Once the connections are made, restore power and test the operation.

The dimmer does not work, what should I do?

Make sure the power supply is restored and the connections are properly made. Also check that the bulb used is compatible with a dimmer. If the problem persists, consult the manual for additional troubleshooting information.

What type of bulbs can I use with the Gewiss GW90750?

The Gewiss GW90750 dimmer is compatible with incandescent and dimmable LED bulbs. Make sure the LED bulbs are specifically marked as dimmable to ensure optimal operation.

Can I use multiple Gewiss GW90750 dimmers on the same circuit?

It is possible to use multiple dimmers on the same circuit, but it is recommended not to exceed the maximum load capacity specified in the user manual. Also check the compatibility of the bulbs used.

How to adjust the brightness with the Gewiss GW90750?

To adjust the brightness, simply turn the dimmer knob clockwise to increase brightness and counterclockwise to decrease it. The dimmer response may vary depending on the type of bulb used.

What to do if the dimmer makes noise?

A slight buzzing may occur depending on the type of bulb used. Make sure to use bulbs compatible with dimmers. If the noise persists or worsens, it may be necessary to replace the dimmer or consult an electrician.

Is the GW90750 dimmer equipped with overload protection?

Yes, the Gewiss GW90750 dimmer is equipped with overload protection to prevent damage in case of electrical overload. However, it is always important to respect the specified load limits.

How to clean the Gewiss GW90750 dimmer?

To clean the dimmer, use a soft, dry cloth. Avoid using chemical or abrasive cleaners that could damage the dimmer surface.

USER MANUAL GW90750 Gewiss

Terminals for connecting loads

Local command push-button

Bouton-poussoir de commande locale

2.5A fuse with high breaking capacity

Button key for programming

Warning! The safety of this appliance is only guaranteed if all the instructions given here are followed scrupulously.

These should be read thoroughly and kept in a safe place.

Chorus products can be installed in environments which are dust-free and where no special protection against the penetration of water is required.

They shall be installed in compliance with the requirements for household devices set out by the national standards and rules applicable to low-voltage electrical installations which are in force in the country where the products are installed, or, when there are none, following the international standard for low-voltage electrical installations IEC 60364, or the European harmonization document HD 60364.

Gewiss sales organization is ready to provide full explanations and technical data on request.

Pack contents

1 Universal dimmer actuator 500VA - DIN rail mounting
1 BUS terminal
1 Cover with screw
1 User and Installation Manual

Briefly

The universal dimmer actuator 500VA - DIN rail mounting allows you to command and adjust incandescent lamps, inductive loads (low voltage halogen lamps, via winding transformers) and capacitive loads (low voltage halogen lamps, via electronic transformers). The dimmer actuator is powered from the BUS line, and has a front LED to indicate the output status (LED not lit up when OFF, green when ON, red if the output is overloaded). The dimmer actuator is used to switch the connected load on and off, adjust the degree of light intensity, perform timed commands, priority commands and locking activation commands for forcing the output status, memorise and execute scenes, and manage the slave function so a master KNX device can control the light intensity. The various operating modes can be used simultaneously. The dimmer actuator is assembled on a DIN rail, inside electric boards or junction boxes.

Functions

The dimmer actuator is configured with the ETS software, to perform the following functions:

ON/OFF SWITCHCOVER

• Setting the degree of light intensity for the execution of the ON switchover command

RELATIVE LIGHT ADJUSTMENT

• Parameterisation of the maximum and minimum adjustment thresholds
• Parameterisation of the relative adjustment speeds between 0% and 50% , and between 55% and 100%

SCENES

-Memorising and activating 8 scenes (value O - 63)
- Enabling/disabling of scene learning from BUS

PRIORITY COMMAND (FORCING)

• Setting the degree of light intensity with forcing ON activation
• Setting the forcing status upon BUS voltage reset

TIMED SWITCHOVER (STAIR RAISER LIGHT)

• Parameterisation of light value during timing
• Setting the activation time
• Setting the pre-warning time
• Parameterisation of behaviour when a timed activation command is received with timing already active
• Setting the stair raiser light activation time from the BUS

GENERAL DESCRIPTION

LOCKOUT FUNCTION

• Parameterisation of the lockout activation value, behaviour when lockout is active, and behaviour when lockout is deactivated
• Setting the lockout object value upon download and upon BUS voltage reset

SLAVE MODE FOR CONTROL FROM BUS DEVICE

• Setting the monitoring time and dimmer behaviour in safe operating mode
• Parameterisation of the slave mode value upon download and upon voltage reset

LOGIC FUNCTION

• Logic operation AND/NAND/OR/NOR with command object and result of logic operation
• Logic operations AND/NAND/OR/NOR/XOR/XNOR up to 4 logic inputs
• Setting the NOT operation on the 4 inputs

For all the command objects, the following operations are possible:

• Setting the mode for reaching the required light intensity (via a ramp or jump to that value)
• Parameterisation of the ramp adjustment speed 0% - 100%
• Setting the delay for switch-on and switch-off

OTHER FUNCTIONS

• Parameterisation of the output behaviour upon failure and reset of BUS voltage
• Setting the transmission of information concerning the ON/OFF status and the current light intensity percentage value
• Setting the transmission of information concerning overloads
• Setting the transmission of information concerning the absence of a 230V voltage (with BUS voltage present)
• Setting the local button key operation

Status of the LED for output status signalling
OFF Load not piloted	(OFF or adjustment value 0%), and mains voltage present
Green	Load piloted (ON or adjustment value different from 0%), and mains voltage present
Red Output overload
Flashing yellow Mains voltage absent, and BUS voltage present
Flashing red Reset after overload (5 sec)

INSTALLATION

ATTENTION: the device must only be installed by qualified personnel, observing current regulations and the guidelines for KNX installations.

Recommendations for installing the KNX

1. The length of the BUS line between the dimmer actuator and the power supply unit must not exceed 350 metres.
2. The length of the BUS line between the dimmer actuator and the furthest KNX device must not exceed 700 metres.
3. To avoid unwanted signals and overvoltages, do not use ring circuits.
4. Keep a distance of at least 4mm between the individually insulated cables of the BUS line and those of the electricity line (figure C).
5. Do not damage the electrical continuity conductor of the shielding (figure D).

ATTENTION: the unused bus signal cables, and the electrical continuity conductor, must never touch any live elements or the earthing conductor!

Assembly on the DIN rail

Assemble the dimmer on a 35mm DIN rail in the following way (figure E):

1. Insert the upper device coupling in the DIN rail.
2. Rotate the device, then lock it in place on the DIN rail by means of the fixing tab.

Electric connections

ATTENTION: disconnect the mains voltage before connecting the device to the electricity supply!

• Figure B shows a diagram of the electrical connections.
• Connect the red wire of the BUS cable to the red clamp (+) of the terminal, and the black wire to the black clamp (-). Up to 4 BUS lines can be connected to the BUS terminal (same coloured wires on the same terminal) (figure F).
• Insulate the shield, the electrical continuity conductor, and the other white and yellow wires of the BUS cable (if a 4-conductor BUS cable is being used), that are not necessary (figure D).
• Insert the BUS clamp in the pins of the device. The correct connection direction is determined by the fixing guides. Insulate the BUS terminal with the special cover, that must be screwed onto the device. The cover guarantees the minimum separation distance of 4mm between the power cables and the BUS cables (figure G).
• Connect the load to the relevant screw terminals underneath the actuator, making sure the current limits specified in the Technical Data are not exceeded.
• Protect the dimmer by inserting a fuse with high breaking capacity (max. 2.5A) on the power supply line.

Using the local command push-button

The manual command push-button (figure A) allows the cyclical ON/OFF switchover, bringing the light intensity level from 0% to 100% and vice versa every time it is pressed (default setting). If a priority command is active, the local commands are not executed.

The behaviour of the local command push-button can be configured via ETS.

Overload management

Any possible overload is signalled by a fixed red light on the front LED. During the overload situation, the dimmer output is switched off and every command received from the BUS is ignored. Once the cause of the overload has been eliminated, you can restore normal operation and deactivate the overload signal in the following ways:

• via the front command push-button of the dimmer and commanding the output. The dimmer will assume the maximum light intensity value and, after about 5 seconds (if the overload has been eliminated), the status LED will switch on with a fixed green light. The front button key allows the dimmer to be commanded even in the event of an overload. During the reset operation (about 5 seconds), the front LED turns red and flashes;
• by disconnecting the 230V AC mains voltage (with the BUS voltage present). When the mains voltage is restored, you can send a command via the BUS or command the dimmer via the front push-button. Regardless of the command received, the dimmer will bring the load to the maximum light intensity value. After about 5 seconds (if the overload has been eliminated), the status LED will switch on with a fixed green light and the dimmer will execute the last command received. During the reset operation (about 5 seconds), the front LED turns red and flashes.

Maintenance

Use a dry cloth if cleaning is required.

PROGRAMMING WITH ETS SOFTWARE

The device must be configured with the ETS software.

Detailed information about the configuration parameters and their values can be found in the Technical Manual.

TECHNICAL DATA

Communication KNX BUS

Power supply via KNX BUS, 29V DC SELV

BUS cable KNX TP1

Bus current consumption 9 mA max

Command elements 1 miniature programming button key manual ON/OFF command push-button

Display elements 1 red programming LED

1 LED for output status signalling

Rated voltage 230V AC, 50Hz

Total allowed power Incandescent lamps: 40-500W

Halogen lamps: 40-500W

Inductive loads: 40-500VA

Capacitive loads: 40-500VA

Maximum dissipated power 10W

Ambit of use Indoors, dry places

Operating temperature -5÷ +45^

Storage temperature -25÷+55°C

Relative humidity Max 93% (non condensative)

BUS connection 2-pin coupling terminal - 0.1mm

Electrical connections Screw terminals - max. cable section 2.5mm^2

Protection ratings IP20

Dimension 4 DIN modules

Reference standard Low Voltage Directive 2006/95/EC Electromagnetic Compatibility Directive 2004/108/EC EN50428, EN50090-2-2

Certifications KNX/EIB

SOMMAIRE

CONSIGNES GENÉRALES 20
DESCRIPTION GENERALE 21
INSTALLATION 23
PROGRAMMATION A L'AIDE DU LOGICIEL ETS 25
CHARACTERISTIQUES TECHNIQUES 26

CONSIGNES GÉNÉRALES

Gestion de la surcharge

According to article 9 paragraph 2 of the European Directive 2004/108/EC and to article R2 paragraph 6 of the Decision 768/2008/EC, the responsible for placing the apparatus on the Community market is:

Gewiss S.p.A Via A. Volta, 1-24069 Cenale Sotto (BG) Italy Tel: [phone] Fax: [phone] E-mail: [e-mail]

[phone]
8.30 - 12.30 / 14.00 - 18.00
lunedi ÷ venerdi - monday ÷ friday

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