Configuring the IUVO system is simpler than you think.



Before proceeding with the analysis of sample projects showing the use of IUVO modules, we suggest you read the general guidelines.

Differences in the design and implementation of traditional installation and installation in the IUVO system.

The IUVO system is intended for newly built facilities. The structure of its cabling is based on the star topology. The selection of the parameters of the power supply cables is carried out in the same way as in a traditional installation. The main difference in the wiring is that the power and control cables are wired directly to the electrical/automation switchboard.

The figure (Fig. 1.) shows the difference in cabling between the traditional installation and the installation made for the IUVO system. Diameters and the number of wires supplying loads are identical in both cases. At the same time, for the IUVO system, the cables go directly to the switchboard, while in a traditional solution they pass through the connectors and only reach the switchboard. In contrast, connectors or panels (instead of traditional YDY cables) in the IUVO system UTP cables cat. 5e or higher are used (commonly called “twisted pair”). If the planned touch panel has more than five sensory fields, then an additional UTP cable has to be used.

Fig. 1. Cabling structure in the IUVO system.

Electrical installation based on IUVO controllers, has a “star” topology. All circuits converge to the automation switchboard. Two types of circuits can be distinguished in the installation: low-voltage (below 24 VDC) and high-voltage (230 VAC). Low-voltage circuits include the power supply circuits for PIR detectors (12 VDC), illuminance detectors (12 VDC), circuits of switches / panels and reed switches in doors and windows, temperature sensors, insolation, wind or rain. Low voltage circuits are wired using UTP, YTDY 6×0.5mm2, OMY 3×0.5mm2 cables. The maximum lengths of UTP, YTDY, OMY cables are 200 meters for a single circuit. If these lengths are exceeded, an additional automation switchboard should be considered. If the detector supply voltage is below the rated voltage provided by the manufacturer, connect in pairs the wires in the YTDY 6×0.5mm2 cable so that the supply voltage is within the manufacturer’s tolerance (lowering wires resistance).

High voltage circuits include electrical outlets, lighting, roller blinds and circuits supplying fans and other 230/400 VAC loads. High-voltage circuits are routed with YDY / YKY / OMY cables with a standard number of wires for conventional installations. The choice of YDY wires diameter is determined just like in a traditional electrical installation. The calculations should take into account voltage drops, maximum current and load’s power consumption. High voltage circuits should be wired according to electrical current output standards same as in traditional electrical installation on a wall, floor or ceiling. Low voltage cables must not run in one bundle with high voltage cables due to interference! The minimum distance between high-voltage and low-voltage cables is about  10 cm. The above conditions are necessary for the system to work stably! Also, when inserting the wiring into the electrical switchboard, low voltage and high voltage cables must pass through separate bushings. The example picture has two separate grooves for low voltage and high voltage cables. This arrangement of cables ensures no electromagnetic interference is occuring. All wires should be labeled in accordance with the design using permanent marker on insulation in two places at a distance of 50 cm from each other. The cable length should be minimum to the floor plus 50 cm (if cables are routed from above) or minimum to the ceiling plus 50 cm if routed from the floor up. Cables should be cut to one dimension and additionally grouped separately into ouputs (preferably rooms) and low-voltage inputs (also preferably rooms). This makes installation easier and additionally makes arming of the switchboard and faster. Moreover, additionally protects against electromagnetic interference!

Fig. 2. Correctly made furrows for high and low voltage cables.
Fig. 3. The inputs of the IUVO logic modules are protected against interference by using galvanic separation. High-voltage outputs are located "at the top" of the module, while low-voltage "at the bottom" of each IUVO module in the form of removable corner connectors. This type of solution prevents interference and simplifies the installation of wiring in the automation switchboard.
Fig. 4. Electrical and IUVO automation switchboards during assembly.

IUVO modules are mounted on a standard DIN rail (TS35), i.e. they can be easily installed in a traditional electrical switchboard. However, we recommend using two switchboards for larger installations. Electrical switchgear in which electrical protections (circuit breakers, disconnectors, short-circuiting devices) and automation switchboard will be installed, in which IUVO controllers connected to controlled loads will be installed.

This solution is more transparent in the logical sense and more convenient for the end user of the system, because in the event of an electrical protection, user only opens the electrical switchboard.

For small systems, where several modules are used, the division to automation and electric switchboards is not required and saves space in an apartment or small house.

1 – Wiring cables to the load output connectors (popularly called wiring terminals). The wiring terminals are connected to phase receiving wires (L): lighting, fans, blinds, controlled sockets. Alternatively, neutral (N) separately if required (multiple residual current devices or other causes). It is a very flexible solution that facilitates the work of arming the switchboard, subsequent periodic inspection and diagnostics. 2 – Wiring Input cables to the switchboard for low-voltage circuits (F/UTP, YTDY, OMY). Thanks to this solution, the automation switchboard is in order, low-voltage cables are on the opposite side to high-voltage cables. It should also be remembered that this way the effect of electromagnetic radiation influence on low voltage cables is minimized. 3 – Between switchboards wires for high voltage circuits (LgY, OMY). If two separate electrical and automation switchboards are used, the cables connecting the logic module outputs or, if necessary, the load cables (from the terminals strip to the logic modules) should be added.

Fig. 5. Electrical switchboard with terminals strip and output cables connected and labeled.

In the photo (Fig. 5) you can see the way of connecting more loads that will be controlled by IUVO logic modules. The logical division is into lighting circuits (left) and sockets (right). Other receiving devices such as blinds have their ZUG strip in a separate automation switchboard. On the left you can see a bundle of red cables supplying the outputs of the logic modules (led to the automation switchboard) along with a series of protections with B10 switches (to protect the overcurrents of the controlled circuits) and above on the left brown cables (loads from the ZUG strip for angle connectors in IUVO logic modules ). At the same time, it can be observed that the electrical switchgear in the following sections is identically armed as a traditional one, and includes short circuits, disconnectors, circuit breakers, and contactors.