CVD04SA

Stand-Alone LED Strip Dimmer

High-frequency dimmer for LED strips from 12 to 48V
With 4 outputs for dimming monochrome / WarmWhite-CoolWhite / RGB / RGBW LED strips
Usable with or without a controller

Technical info Control

High-frequency dimmer for LED strips from 12 - 48V. With 4 outputs for dimming monochrome/WarmWhite-CoolWhite/RGB/RGBW LED strips. Combines dimmer and driver functionality. Qbus Stand-Alone DIN-rail module usable with and without a controller

Frequently Asked Questions

When uploading the data, a module always displays Err.255 (Module not found)
If Err.255 appears during the programming or verification of a module, this can have several causes:
First, verify whether the serial number was correctly entered as shown on the sticker on the module or its packaging. A serial number always consists of 6 digits or 10 hexadecimal characters (e.g., 0006B01ADE), with the first 4 determining the module type.
Conduct a test through “Utilities/Communication Check”. Enter the last 6 digits of the serial number here and click on “Start Module Test”. If communication with this module is perfect, you should see a nice flat line at 100%. If you see a flat low line, there is no communication. If the line is pulsed, communication is poor. Check whether the bus voltage (+/- 14V) is still correctly reaching the module or check the wiring. Try communicating with the module directly at the controller with 2 short bus wires (without any other connected module) before returning it via our RMA procedure.
Several modules can transmit their serial number:
All SWC variants can be searched via “File/Modules/Search for modules”. After clicking “Start search”, all connected switches will blink blue. Pressing any key on the switch will transmit its serial number.
All modules with a 10-character serial number can be read via “Utilities/Communication Check” if 1 and only 1 module of this new type is connected to the bus, by entering “FFFFFF” as a serial number.
How do you check if a DIN-Rail module is still functioning?

All recent DIN-rail modules are equipped with a fuse and status LED(s).
First, check if the upper PWR LED is still lit (green). If not, check the fuse and measure the power supply voltage. If both the fuse and the power supply voltage are correct, then the module power supply is defective and should be repaired or replaced.
First, always try a full reset: simultaneously disconnect both power and bus at the same time, then reconnect power (and bus if applicable).

The lower PWR will light up when the bus is correctly connected. In Stand-Alone mode, this PWR LED will remain OFF. The red status LED will briefly light up or blink when the module starts. However, if it continues to light up or blink, the firmware may be corrupted. Firmware can be updated via the SMIII under “Tools/Setup/Software/Modules: Firmware Upgrade”.

For end users, the installer is the first point of contact. They are familiar with the most common errors and will contact Qbus support for unknown issues.
If the module needs to be repaired or replaced, use our RMA procedure to return a module.
Switching of an output via one or more detectors AND via a push button.

Since a detector will always communicate the exact status of its detection to the configured output, it is not possible to use this same output on multiple modules.
If you want to switch an output via a detector AND via a push button, you must link them through a logic expression.
For example:
IF ( #Hall Detector1 = On
OR #Hall Detector2 = On
OR _Hall Push Button = On )
THEN Hall Lamp = On ELSE = Off

You can find a sample configuration at the following link: Detector_And_Manual.QDB
How do you read an existing configuration?
This is a completely different procedure depending on the type of controller.
For the CTD controllers this goes as follows:
In the SMIII via "File" or "Utilities / Setup / SD card", click on "Recover QDB from SD".
After confirmation you choose the name and location where the file should be saved. The zipped QDB file is then read from the SD card of the CTD and saved. With a positive answer to the question "Unzip and open restored QDB?", All data will then be immediately available. If the data you were still working on was not sent or saved, you will first receive a notification to do so.

For a CTL controller follow the following procedure:
Because this controller does not yet have a large memory, only limited data can be recovered. Ao the names are abbreviated to 12 characters and serial numbers are not stored anywhere.
The first step is therefore to type in ALL serial numbers via SMII via "File / Modules". These 6-digit serial numbers can be found on every module (DIN rail, switch, detector, etc.). For the SWC0x switches, an extra option was provided to have them send their serial number via “Search for modules”.
When you then click on the "down arrow", you can read all this limited information.
Always use the latest software for configuration.

It is always recommended to use the most recent version. This version supports the newest modules and resolves all known bugs.
If, for example, you enter a serial number and the correct module information does not appear, you are likely not working with the most recent software.
A newer version will always be able to open the older files (.QDB) without data loss.
The latest version of the System Manager software, along with the user manual and version history, can be found in the knowledge center.

Control

Operations via Qbus Control

RGB mode
The RGB output is used to control RGB LEDs.
In the menu at the top, you can choose three different ways to control the LED color:
A color wheel
A color picker
A color transition

By sliding up and down in the right section, the LED fixture can be dimmed up and down.
At the bottom, you can turn the LEDs On or Off.
Dimmer
You can turn the outputs of this module ON or OFF via Qbus Control using the buttons at the bottom.
By swiping up or down, you can change the status to a value between 0 and 100%.
With the chart icon in the top right corner, you can view the historical data.
24 hours: Here you can see the status of this I/O for the last 24 hours.
7 days: Here you can see the status of this I/O for the last 7 days. You can also immediately see which day this output was on for the longest and shortest time. By tapping on a day, you can see in detail how long this output was on.
30 days: Here you can see the status of this I/O for the last 30 days. You can also immediately see which day this output was on for the longest and shortest time. By tapping on a day, you can see in detail how long this output was on.

Technical info for installers

Function description
The CVD04SA is suitable for dimming 4 circuits each of 7A, with a total load of 28A for DC voltage between 12V and 48V. The dimmers are digitally controlled with 8-bit precision. Optical isolation between inputs and outputs ensures the safe operation of the module. The dimmer is highly suitable for dimming LED strips and LED modules designed for constant voltage. Various combinations are available for controlling, for instance, LED strips: 4x monochrome, 2x Warm-White/Cold-White, RGB + 1x monochrome, RGBW. The module also has an all on/off input (terminal A).
If the dimmer is used as a Stand-Alone module, one can choose to activate the memory function (so that the dimmer, for example, automatically returns to the previous state upon next use) and configure the various combinations mentioned above. You can reach these settings by using the buttons on the module. See further under "Manual Configuration" in this technical sheet. When using the dimmer in a Qbus installation, you have access to all settings available in System Manager III. If a different minimum dim level is set via this tool, the module retains the set percentage also in stand-alone mode.
There are two power supply terminals provided to allow the total power of 28A. Through power supply terminal 1 (PWR1), the module receives the necessary voltage for operation and for the power on PWM outputs 1&2. Through power supply terminal 2 for PWM outputs 3&4. Different voltage can be connected to power supply terminal 1 than to power supply terminal 2. Thus, it is possible to control with output 1&2 24VDC, and on outputs 3&4 e.g. 48VDC. When using an RGB(W) LED strip, a bridge is made between power supply terminal 1 and 2.
The module also has 5 potential-free inputs for connecting standard push buttons. Input 1 to 4 respectively control output 1 to 4, input A is an atmosphere input which, with 0.7 seconds press (and then release), performs an ALL OFF atmosphere and with 3 seconds press (keep pressing) activates a PANIC SCENE (All On). The inputs for operating the dimmers are only suitable for Normally Open push buttons. When the CVD04SA is connected to a controller, the function of input A can be adjusted via the Qbus configuration software to normally open or normally closed. Some settings can be adjusted for Stand-Alone operation, see further.
The dimmer outputs can only be programmed as single-button dimmers in stand-alone mode. With a 1-button dimmer, the cycle must always be completed: starting at 0% to 100% and back to 0%. A short pulse (< 0.3 sec) brings the dimmer from zero to maximum in 2.5 seconds. When using a Qbus Controller, you can:
determine the dim start value of the dimmer between 5% and 100%;
set a Dimstart percentage for day and a second Dimstart percentage for night using the built-in astronomical clock;
automatically dim upon activation via short pulse after a set time of 1 second to 255 minutes (TimeOff);
if dimmers are controlled via a scene or TimeOff, set the ascending time and descending time independently between 0.3 seconds and 20 minutes.
The CVD04SA features a synchronization system, allowing multiple CVD04SAs to be linked in a Master-Slave system. When a subsequent CVD04SA is connected on the Sync Out via its Sync In, this module will automatically become the Slave module of the previous one. In this case, the functions of the push-button inputs and the Qbus bus are no longer applicable! The module receiving a signal on the Sync In will thus not be controllable via the Qbus bus, and likewise, the inputs will no longer function.
Each output of the CVD04SA is protected against overload and overheating. If the power supply can deliver more than 20A, a suitable fuse of maximum 20A must be placed between the 12VDC-48VDC power supply(ies) and the power supply terminals of the module. Ensure adequate ventilation in the distribution cabinet. If the load on one or more channels exceeds 5A, active ventilation with a maximum temperature of 25°C is necessary. If the currents per channel remain below 5A, the ambient temperature may be 30°C. Ventilation in the fuse box is always recommended to dissipate the heat generated by the power supply(ies).
Technical specifications
General specifications:
Power supply: 12VDC – 48VDC - +/-5%
Dielectric strength: tested at 3 kVac
Consumption: 1.15VA no load
Ambient temperature:
Operating temperature: 10°C to 70°C Storage temperature: -10°C to 70°C
Maximum humidity: 93%, non-condensing
Bus load: 10mA (peak) at nominal voltage 3.8V
Maximum installation height: 2,000 meters
Outputs:
4 PWM channels on cathode (-) with common anode (+).
Physical specifications:
Enclosure: plastic, self-extinguishing according to UL94-V0
Protection degree: IP20, EN 60529
Installation: quick assembly on DIN rail, width 6 modules
Dimensions (h x w x l): 62 mm x 90 mm x 72 mm
Weight: approximately 0.145 kg
Electrical safety:
Bus: 13.8VDC low voltage
Complies with EN60950 – 1: 2006
Non-toxic, in accordance with WEEE/RoHS
CE
Qbus declares that this product complies with all applicable European directives and regulations.
The EU declaration of conformity can be consulted on our website www.qbus.be.
Sizing
Symbol explanation

Equipment where protection against the risk of electric contact is not only based on basic insulation but also on additional protection such as double insulation or reinforced insulation. There is no possibility for grounding.

Before connecting the device, it is mandatory to read the manual of the respective product. ISO7000-0434

Power supply connection (230V) to the power supply connector. IEC 60417-5036

CE conformity. All declarations of conformity are available upon request.
Warranty Provision

2 years from the date of delivery. The warranty becomes void if the module has been opened! The warranty period is extended by 2 years if it was installed by a certified Qbus installer.
In case of defects, Qbus support should be contacted by a certified installer. After registration with Qbus support, the defective module can be sent, unsealed and with a description of the defect, to our Qbus support.
Contact details:
Qbus NV
Joseph Cardijnstraat 19
B-9420 Erpe-Mere
Tel: +32 (0)53 60 72 10
Fax: +32 (0)53 60 72 19
Email: support@qbus.be

General

Safety regulations
Read the complete manual before installing the module and activating the system.
CAUTION
The module must be installed, started, and maintained by a certified electrical installer in accordance with the applicable legal regulations of the country.
This module is only suitable for DIN-rail installation EN50022. The module must be installed in a fireproof, enclosed distribution box with ventilation grilles.
Before working on the CVD04SA, the power must be turned off.
Never connect AC voltage (e.g., 230V~) to the power terminals, Qbus bus, or inputs! This will cause irreparable damage to the module and/or connected devices.
Only to be used in combination with DC voltage between 12V and 48V.
The module must not be opened. The warranty voids if the module is opened!
Never use the power supply of the Qbus Controller for the power supply of the LED feedback on stand-alone modules!

Installation and wiring

Installation

Click the module onto a DIN rail DIN EN50022.
Power Supply

ATTENTION: DISCONNECT THE POWER SUPPLY TO THE MODULE BEFORE WORKING ON THE MODULE!
One or two power supplies can be used. The module has two power terminals. If an RGB or RGBW LED strip is connected, then both power terminals must be connected to the same power supply.
Load

The CVD04SA features two power supply terminals with screws, each allowing a maximum capacity of 16A per connection. Strip approximately 7mm of insulation from the cable and insert the cable into the terminals. Both solid and stranded wires between 0.5 – 2.5 mm2 can be used and must comply with the consumer power requirements. When using stranded wire, we recommend using ferrules or tinning the wires.
SA inputs

Remove approximately 7mm of insulation from the cable and insert the cable into terminals 1 to A. Both solid and stranded cables between 0.5 – 1.5 mm2 can be used; for stranded wire, a screwdriver must be used to press the terminal while inserting the wire. Inputs 1 to 4 control outputs 1 to 4, respectively, input A is configured by default as a scene input. By releasing the pushbutton connected to this input after 0.7 seconds, all outputs will switch to the “off” status; pressing the same pushbutton for more than 3 seconds will switch all outputs to the “on” status. By pressing on the top of the terminal with a screwdriver, the wires can be removed from the terminals.
Stand Alone LED feedback

An external 5-24VDC power supply can be connected to the CVD04SA to provide LED feedback on 4 push buttons through the LED outputs.
BUS connection

It is recommended to use the Qbus cable or any other cable with a minimum of 2 conductors of 1mm² as the bus cable. The green shielded EIB cable can also be used if the conductors are paired to achieve a minimum cross-section of 2 x 1mm².

Wiring diagram

Stand Alone

Stand-alone
Multiple stand-alone modules can be connected to each other.
With Qbus Controller

Hybrid: With LED Feedback, Push Buttons, and Controller

Stand Alone

Manual Configuration and Operation: The buttons on the CVD04SA are used to directly operate an output or to set other functions. By default, the outputs are set as a Dimmer with a minimum dim level of 10%. To change the configuration, the following procedure must be followed each time:

Ensure all outputs are OFF (= all orange LEDs are off).
Press buttons 1 and 2 simultaneously for five seconds.
The red STATUS LED on the module will blink rapidly for 5 seconds and then more slowly.
Once the STATUS LED is blinking slowly, release one of the buttons, and 2 seconds later release the other button. The red STATUS LED will continue to blink for 10 seconds: the module is now in configuration mode, and the orange LEDs light up according to the set programming as mentioned in the table below. The linked channels light up together.

Settings	LED Confirmation
Controlled via the Qbus bus	Orange LEDs are all 4 on
Standard 4x dimming channel	Orange LEDs of the 4 outputs flash briefly in succession
Warm white + cold white	Orange LEDs of output 1 and 2 flash alternately with the LEDs of output 3 and 4
RGB + Ordinary dimming channel	Orange LEDs of the first 3 channels flash together briefly after which output 4 lights up
RGBW	Orange LEDs of the 4 channels flash together

5. The outputs are set by default with a minimum dim level of 10%. To use a memory function, this can be set by pressing the button of the respective output a number of times during the slow blinking of the red status LED. The table below shows the number of times the button must be pressed to recall a preset configuration, the orange LED lights up each time it is pressed. The red status LED flashes quickly 10 times after selecting the desired mode, and then the configuration mode ends automatically.

Memory function	Number of presses
Standard 4x dimming channel	1
Warm white + cold white	2
RGB + Ordinary dimming channel	3
RGBW	4
Memory function off	5
Memory function if >20%	6

Note: When a CVD04SA is connected in slave mode, the programming buttons of that module cannot be used.

System manager III

Each modules has an unique serial number. By this number the System Manager recognizes the modules.
This is completely explained in our knowledge center.

The Constant Voltage Driver sends a PWM signal to the 4 channels.
The module can control the following types of I/O’s in standalone mode:
-    4 separate dimmers
-    2 WWCW LED(strips)
-    1 RGB LED strip + 1 dimmer
-    1 RGBW LED strip
In the selection you can also indicate that the module is controlled via the QBUS bus. Other combinations of I/O types are also possible in this way.
In the properties it is also possible to choose the desired PWM frequency (500Hz, 1000Hz or 2000Hz.
And per channel you can set whether it is dimmed according to a linear or a logarithmic curve.
The module window looks like this:

The configuration of the RGB+ colors and sequences (via the button at the top right) is done in an identical way as described for the SER485/DMX module.

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