REL04SA

Stand-Alone Relay Module with 4 Outputs

Name: Glue digital agency
Price range: $

Execution:

DIN-rail module capable of controlling lighting, sockets, and motors.
Features 4 outputs of 16A and 5 inputs, including 1 All Off/Panic button.
Operated via standard push buttons, including an All Off and Panic button.
Can also be used Stand Alone (without a controller).
Available in sets of 4 REL04SA modules.

Technical info Control

DIN-rail module. Contains 4 x 16A switched outputs and 5 inputs, including 1 All Off / Panic button. Can also be used for controlling motors. The module can be used both Stand-Alone and in combination with a controller (Full Qbus).

Frequently asked questions

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

On / Off
You can switch the contacts of this module ON or OFF via Qbus Control.
With the graph symbol in the top right corner, you can consult the historical data.
24 hr: 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 will also see which day this output was on the longest and the shortest. 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 will also see which day this output was on the longest and the shortest. By tapping on a day, you can see in detail how long this output was on.
Thermostat
Through System Manager, you can assign a Thermostat output to any contact of this module. You can then easily control this thermostat with Qbus Control.
At the bottom, you can choose a regime, which are a number of pre-set temperatures. You can also choose to set the temperature yourself by swiping up/down.
On the left side, you see the measured temperature, on the right side the set one.
With the graph symbol in the top right corner, you can view the historical data.
24 hours: Here you see the status of this I/O for the last 24 hours. The line shows you the trend of the measured temperature, the bars show the set temperature.
7 days: Here you see the status of this I/O for the last 7 days. The line shows you the trend of the measured temperature,
30 days: Here you see the status of this I/O for the last 30 days. The line shows you the trend of the measured temperature,
Roller shutter up / down

Technical info for installers

Function description

The module has 5 potential-free inputs for connecting standard push buttons (N.O.). Input 1 to 4 control the outputs 1 to 4 accordingly. The A input functions with a pulse between 0.7sec and 3sec as an "All Off" command. A long pulse > 3sec on the A input functions as an "All On" command. By linking the A inputs of different Stand-Alone modules, multiple outputs on different modules can be controlled in groups.
The REL04SA, like every Qbus module, has a unique serial number that is entered during configuration in the configuration software System Manager III. All programmed data remain internally stored in permanent memory.
The functionality of the outputs is limited to being modifiable in Stand-Alone mode via the buttons on the module's front. For the REL04SA series (manufactured 2012 – 2024) with serial numbers 05xxxx or 06xxxx, a choice in SA-state can be made between an "On/Off" (Bistable mode) or 2 button Shutter mode (ROL02T). The updated REL04SA series with serial numbers starting with 0040, have additional SA functions such as forgetting timer and staircase switch.
The operation of input A can be adjusted when the REL04SA is connected to a Qbus CTD controller using the Qbus configuration software (System Manager III). This allows you to set input delays, as well as a cascade time for the entire module between 0 and 254 seconds. You can also determine per output whether it may or may not be controlled by an "All Off" and/or "All On" command on the A input.
The cascade control avoids peak load when many lighting circuits are controlled simultaneously via input A, for example. Once these changes have been programmed, the module can be disconnected and continue to operate Stand-Alone with these settings. Additionally, there are 4 connections where you can connect LED feedbacks with a suitable external power supply with a voltage of 5-24Vdc.
If relay contacts 1&2 and/or 3&4 of the REL04SA are set as shutter control, the module does not allow an Up and a Down contact to be controlled simultaneously. It is also not possible to quickly switch between an UP command and a DOWN command. The module protects the motors against undesired rapid switching, which could damage or disrupt a motor.
The operating modes of the REL04SA can be adjusted via the buttons on the module or through a temporary or permanent connection with a CTD via System Manager III.
If a CTD is connected, the Stand-Alone menu is no longer usable.
For REL04SA modules with a production date from 03/2025, the choice in Stand-Alone is expanded (s/n from 0040B18C05). Modules with serial number 0040xxxxxx, but without the expanded menu, can obtain it via a firmware update through a Qbus CTD. You now have the choice of 4 operating modes in SA use. In addition to "On/Off" (Bistable), these also feature the "Forgetting Timer" (Timer1), "Staircase Timer" (Timer2), and the classic "Shutter Mode" (Rol02T). See further under "3. Installation and wiring – Manual control".
If the module is restarted after a power outage, the outputs will be in their last position.
Technical specifications
General Specifications:
Power Supply: 230Vac +-10%, 50Hz - maximum protection C16A/2P
Dielectric Strength: tested at 3 kVac
Typical Consumption: max. 25mA (all relay outputs on)
Ambient Temperature:
Operating Temperature: 10°C to 50°C
Storage Temperature: -10°C to 60°C
Maximum Humidity: 93%, no condensation
Bus Load: <5mA at nominal voltage 13.8V.
Maximum Installation Height: 2,000 meters above sea level.

Outputs:
1 – 4: Potential-free normally open contacts
Maximum Current:
Resistive Load (cos.phi = 1) 16A at 230Vac / 30VDC
Inductive Load (cos.phi = 0.4; L/R = 7 ms) 8A at 230Vac / 30VDC
Maximum Load:
Resistive Load (cos.phi= 1) 3680VA at 230Vac, 480W at 30Vdc
Inductive Load (cos.phi = 0.4; L/R = 7 ms) 1840VA at 230Vac, 240W at 30Vdc
Contact Resistance: 100mW
Set/Reset Time: 15ms max / 5ms max
Lifespan: 20 million operations

Physical Specifications:
Housing: Plastic, self-extinguishing in accordance with UL94-V0
Protection Degree: IP20, EN60529
Installation: quick installation on DIN-RAIL, width 9 modules
Dimensions (HxWxL): 62mm x 160.2mm x 90mm
Weight: approximately 0.426 kg

Electrical Protection
Bus: 13.8Vdc -18Vdc very low safety voltage.
In accordance with EN50491-5-1, EN50491-5-2, EN60529
Dielectric Strength: module is tested and approved at 3kVac. (50 Hz, 1 min)
Non-toxic, compliant with WEEE/RoHS
CE
Qbus declares that this product complies with all applicable European directives and regulations.
The EU Declaration of Conformity is available upon simple request.
Sizing
Explanation of symbols

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 and activating the module.
WARNING
The module must be installed, commissioned, 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 slots.
Power must be disconnected before working on the REL04SA.
Risk of injury! Ensure that there can be no unintended or incorrect operation of the motors during work.
Qbus is not liable for any damage caused by improper handling or misuse of the module.
The module must not be opened. The warranty is void if the module is opened!
Do not use the module in an environment accessible to children.

Installation and wiring

Installation

Click the module onto a DIN-rail DIN EN50022.
Power supply

CAUTION: DISCONNECT POWER SUPPLY TO THE MODULE BEFORE WORKING ON THE MODULE!
A two-pole automatic circuit breaker with a maximum C16A rating must be connected to the 230Vac module power supply. Conductor cross-section: minimum 1.5mm² at 16A. Strip approximately 7mm of insulation from the conductor and screw the conductor into the connector L-N.
Load

The REL04SA is suitable per relay contact for direct powering and controlling of loads with a power capacity of 16A (cos. phi = 1). The relay contacts are single-pole and potential-free. Both solid and stranded wires can be used. Connect the load as shown in the figure on the next page. The cross-section of the conductors is a minimum of 1.5mm² with a maximum protection of C16A.
Remove approximately 7mm of insulation from the conductors and screw the conductors into the connectors. For stranded wire, ferrules must be crimped onto the stranded wires before inserting them into the terminal blocks. A flat-head screwdriver of 0.5mm x 3mm can be used to tighten the terminal block screw.
Only switch on the power after all connections have been checked and the outputs are connected.
SA inputs

Remove approximately 7mm of insulation from the cable and insert the cable into terminals 1 to A. Both solid and stranded wire between 0.5 – 1.5 mm2 can be used; for inserting stranded wire, press on the designated area of the terminal with a screwdriver while inserting the wire. To release and remove wires, press on the designated area at the top of the terminal with a screwdriver and pull the wire back.
Stand-Alone LED feedback

An external 5-24Vdc power supply can be connected to the REL04SA to provide LED feedback for the directly connected push button(s), for example.
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

Option 1: Stand-Alone
You can wire and use one or more Stand-Alone modules. There is no limit to the number of Stand-Alone modules that can be linked via the atmosphere input A. Combinations with other types of Qbus Stand-Alone modules to connect the atmosphere input A ("All-OFF" / "Panic" button) are also possible without limitation. Keep the wiring between push buttons and SA modules as separate as possible from other wiring, or preferably use shielded wiring. Under normal conditions, SVV wiring is sufficient for connecting push buttons.
The push buttons for operating the outputs, as well as the corresponding LED feedback, are directly connected to the module.

Option 2: Multiple Stand-Alone with Interconnection of Inputs A
If you want to connect multiple modules from the same Stand-Alone/star wiring and/or wish to interconnect the A-input, you must always interconnect the C (Common) between the modules! Failing to interconnect the C-input among the different modules can cause malfunctions.

Stand-Alone with LED Feedback
With Qbus Controller

With controller without SA connections

With controller And SA connections

SA configuration

To change the configuration in Stand-Alone use (i.e., without a connected CTD!), certain settings are available for each relay output using the buttons.

Once the module is in configuration mode, you can select the operating mode type or duration for each output. To modify the selection, repeat the procedure to enter configuration mode.

To set the module into configuration mode, follow this procedure:

1) Turn OFF the outputs (= the orange LEDs are off).

2) Press and hold buttons 1 and 2 simultaneously => The red STATUS LED will start blinking rapidly for 5 seconds. After these 5 seconds, the red STATUS LED on the module will begin to flash at a slower pace.

4) Once the red STATUS LED has blinked twice at this slower pace, release the 1st button while keeping the 2nd button pressed. Let the red STATUS LED blink 2 more times before releasing the 2nd button.

The red STATUS LED continues to blink: the module is now in configuration mode for 10 seconds or longer if changes are made.

5) Now press the button for each output the number of times corresponding to your choice from the tables below

The orange LED next to the button lights up each time it is pressed. The following table shows the number of times you need to press the button to achieve a desired setting. Configuration mode stops after no changes are made for 10 seconds.

Select mode	Number of presses
Bistable (default without delay)	1x
Timer1 - Forget Timer (default 30 min)	2x
Timer2 - Stairwell timer (120 sec)	3x
Roller shutter 2T (comb. output 1 with 2nd and/or 3rd with 4th relay; running time 60 sec)	4x

After the mode is set and the module is no longer in configuration mode, you can return the module to configuration mode and adjust the timer durations or run times per output:

Adjust time	Number of presses
Timer Time or Running Time 2 sec.	5x
Timer Time or Running Time 60 sec.	6x
Timer Time or Running Time 120 sec.	7x
Timer Time or Running Time 10 min.	8x
Timer Time or Running Time 30min.	9x
Timer Time or Running Time 255 min.	10x

Via 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 REL04(SA) has 4 normally open contacts, on which max. 16 A and 230 V (cosϕ=1) can be connected. These are independently working contacts, each of which can be assigned a separate function by means of the system manager.
The REL08 has 8 changeover contacts (Normally open or normally closed contact can be connected as desired)
When you have entered the serial number in the modules window, the following window will appear.

The I/O’s can be created in the “modules” section of the System Manager or in the “I/O’s” section. The Mode here refers to the various types of I/O’s, bistable, thermostat, timer, etc.
ATTENTION: a REL04(SA) and REL02SA/230 only have make-contacts. For safety reasons, it is NOT recommended to control electric motors (for roller shutters, curtains, etc.); this requires a REL08, ROL01PSA, ROL02(P)(SA) or ROL04PSA.
When you set the properties of the module to “SA – xx I/O”, you can prepare the module to work stand-alone. The following image shows these possible settings of a REL02SA/230