Control panel for air handling units. Ventilation control cabinets. Ordering example SBU control unit
In case control unit merged:
power section: designed to control servo drives of air valves, fans and circulation pumps;
control part: designed to control automation and protect the power part.
Are made in the hinged case of wall execution:
modular plastic hinged enclosures with a transparent cover from TEKFOR, degree of protection - IP65 with the cover closed and IP45 with the cover open;
hinged modular metal cases, degree of protection – IP31 (IP54) with the lid closed.
All control and indication elements are located:
behind a transparent cover (plastic cases);
on the front door of the unit (metal cases).
The power part of the unit consists of automatic switches, contactors, relays, light indicators and terminals. Depending on the configuration of the ventilation system you ordered, we can implement any of your projects on a freely programmable controller. All ventilation systems are controlled by controllers from Segnetics (Pixel), Siemens, ELKO (TER-9).
Power supply of control cabinets -220 V AC (+10%/-10%) 50 Hz with ground wire or 380 V AC (+10%/-10%) 50 Hz with neutral and ground wire, depending on the modification. Operating temperature range environment- from +50 to +400°С. Relative humidity in the room - 95%.
The control units are designed for indoor installation in a dust-free, dry, chemical-free environment.
Extensions
Functions of SBU control units
| Standard | Extended |
|---|---|
| manual start and stop from the control unit; connection of the outdoor temperature sensor; connection of the supply air temperature sensor; connection of the return heat carrier temperature sensor; control of the condition of thermal contacts of the supply and exhaust fan; servo control air valve(230 V); engine protection circulation pump against overload and short circuit; proportionally - integral control of the coolant valve actuator; protection of the water heater from freezing by supply air temperature (capillary thermostat); protection of the water heater against freezing by the temperature of the return heat carrier; protection of the freon cooler from freezing by supply air temperature (capillary thermostat); protection of the electric heater against overheating; delay for switching off the supply fan with an electric heater (blowing); filter contamination control; system shutdown on signal fire alarm; indication on the liquid crystal display of the set and current parameters of the system; light indication "work"; logging of emergency events; password protection of the service menu. |
protection of the supply and exhaust fans by a differential pressure switch on the fan (belt break); operation of fans with a frequency converter; connection of the room air temperature sensor (cascade control); temperature sensor connection extract air; light indication "accident"; remote control unit; air valve servo control (24V); connection of additional fans; two-stage control of the compressor and condenser unit; five-stage control of an electric heater; mixing chamber control; protection of the rotary heat exchanger or plate heat exchanger from freezing; control of a surface or steam humidifier; work on the built-in weekly timer; proportional - integral control of the cooler valve servomotor; proportional - integral control of adjustable recirculation dampers; proportional - integral damper control; reduction in the frequency of rotation of fans, in cases of lack of performance of heating devices; non-volatile memory; Modbus and SCADA support; maintenance of air quality and CO. |
Supply ventilation automation
| Completeness | Sensors |
|---|---|
| Specification. Certificate of conformity. Package. |
Air damper servo 220 V with spring return - 1 pc. |
| Completeness | Sensors |
|---|---|
| Passports for all automation devices included in the control unit. Functional diagram ventilation system. Schematic electrical circuit. Specification. List of connected devices. Operating Instructions (on the included CD). Certificate of conformity. Package. |
Duct temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Outdoor air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Temperature sensor for pipes VSN NI-1000 TK5000 - 1 pc. Room temperature sensor STR Ni 1000 TK5000 - 1 pc. (optional). Freeze protection thermostat for air KP-61 (AZT-6) - 1 pc. Air damper servo 220V with spring return - 2 pcs. |
| Completeness | Sensors |
|---|---|
| Hinged plastic block with transparent cover IP65 size 560x300x150 mm. Passports for all automation devices included in the control unit. Functional diagram of the ventilation system. Schematic electrical circuit. Specification. List of connected devices. Operating Instructions (on the included CD). Certificate of conformity. Package. |
Duct temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Outdoor air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Temperature sensor for pipes VSN NI-1000 TK5000 - 1 pc. Room temperature sensor STR Ni 1000 TK5000 - 1 pc. (optional). Freeze protection thermostat for air KP-61 (AZT-6) - 2 pcs. Differential pressure switch DM-500 (DPD-5) filter dust content - 1 pc. Differential pressure switch DM-500 (DPD-5) broken belt - 1 pc. (optional). Air damper servo 220V with spring return - 1 pc. Frequency converter - 1 pc. |
| Completeness | Sensors |
|---|---|
| A hinged plastic block with a transparent cover IP65 (TER-9), a hinged metal block (Pixel), the block size depends on the electric power. heater. Passports for all automation devices included in the control unit. Functional diagram of the ventilation system. Schematic electrical circuit. Specification. List of connected devices. Operating Instructions (on the included CD). Certificate of conformity. Package. |
Duct temperature sensor STK-2 NTC 12kOm (STK-1 NI-1000 TK5000) - 1 pc. Outdoor air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. (SBUP-E-30). Room temperature sensor STR Ni 1000 TK5000 - 1 pc. (optional, SBUP-E-300). Differential pressure switch DM-500 (DPD-5) filter dust content - 1 pc. Differential pressure switch DM-500 (DPD-5) broken belt - 1 pc. (optional). Air damper servo 220V with spring return - 1 pc. |
| Completeness | Sensors |
|---|---|
| Hinged plastic block with transparent cover IP65 size 560x408x150 mm. Passports for all automation devices included in the control unit. Functional diagram of the ventilation system. Schematic electrical circuit. Specification. List of connected devices. Operating Instructions (on the included CD). Certificate of conformity. Package. |
Duct temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Outdoor air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Temperature sensor for pipes VSN NI-1000 TK5000 - 1 pc. Room temperature sensor STR Ni 1000 TK5000 - 1 pc. (optional). Freeze protection thermostat for air KP-61 (AZT-6) - 1 pc. Differential pressure switch DM-500 (DPD-5) filter dust content - 1 pc. Differential pressure switch DM-500 (DPD-5) broken belt - 2 pcs. Air damper servo 220V with spring return - 3 pcs. |
| Completeness | Sensors |
|---|---|
| Hinged plastic block with transparent cover IP65 size 560x408x150 mm. Passports for all automation devices included in the control unit. Functional diagram of the ventilation system. Schematic electrical circuit. Specification. List of connected devices. Operating Instructions (on the included CD). Certificate of conformity. Package. |
Duct temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Exhaust air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Outdoor air temperature sensor STK-1 NI-1000 TK5000 - 1 pc. Room temperature sensor STR Ni 1000 TK5000 - 1 pc. (optional). Differential pressure switch DM-500 (DPD-5) filter dust content - 2 pcs. Differential pressure switch DM-500 (DPD-5) broken belt - 2 pcs. (optional). Air damper servo 220 V with spring return - 2 pcs. |
Ordering example SBU control unit
SWUP-W-3-R-3-R-F- where,
SWUP— Type of control unit:
SBUP– control unit with Pixel controller; SBUS - control unit with Siemens controller;
SBUT– control unit with TER-9 controller; SBUV - fan control unit (without controller);
SBUZ- Control block air curtain(without controller).
W- Type of heater (W - water; E - electric)
3
- Connection of the first fan / external control device (1 - single-phase; 3 - three-phase)
R- Control of the external device of the first fan (may be absent)
3
- Connection of a second fan / external control device (1 - single-phase; 3 - three-phase; 0 - absent)
R- Control of an external device of the second fan (may be absent)
F — Additional option- freon cooler (may be missing)
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Application:
The ventilation control unit (panel) is an automation board that is designed to control the entire ventilation unit and regulate all the necessary parameters. The main element of the ventilation control unit, which gives commands to the actuators, is the controller. There are different brands and types of controllers that can be used in ventilation control systems.
The board (block) of management of ventilation provides:
- control of all executive mechanisms according to the specified algorithm.
- maintaining the set temperature, by regulating the cooling capacity and heating capacity of the ventilation unit, of the following types of air:
a) air, in a room with duct air temperature limitation.
b) supply, when leaving the unit
c) air removed from the duct air temperature limited room.
Indication:
a) air filter dusting
b) ventilation unit modes
c) operation of all major mechanisms
d) readings of all temperature sensors
Protection of the elements of the ventilation control system:
a) frost protection for hot water heaters
b) protection against overheating of motor windings
c) protection against overheating of electric air heaters
Dispatching capability
- shutdown of ventilation in case of fire alarm
- additional possibilities of non-standard configurations
Due to the fact that the controllers of the ventilation control systems are freely programmable, they can be designed for almost any range of tasks. Thanks to the diagrams and accessories for the blocks, you can create a durable and convenient ventilation control panel, which will be understandable and convenient during operation and installation.
Design and materials used:
Ventilation control panels are supplied in 2 different variations - in a metal case and a plastic one. Shield with plastic housing closed plastic lid, under which all controls are located. The shield with a metal case contains a metal cover, on which all the controls, switching and signaling elements are displayed. Dimensions of ventilation control cabinets vary depending on configuration.
Installation and prevention
The installation of the ventilation control cabinet can be carried out by personnel who have a permit to work with electrical installations, have received the necessary safety instructions and who know the principles of operation of instrumentation and control systems related to the protection and control of ventilation installations. Before starting work, it is necessary to make sure that the ventilation control cabinet is complete and free of any damage. The ventilation control cabinet is mounted on a vertical surface, the height of which must be at least 1 meter from the floor. Cable entry is from below. The degree of protection of the installation depends on the choice of the installation location of the cabinet.
Control systems and automation of ventilation systems maintain and control the specified climatic conditions in the room. The device that controls all components of the system is called the ventilation control panel. What it consists of, and why automation of ventilation systems is needed, we will consider in this article.
Tasks of ventilation systems
So, the main tasks that are performed using automatic control ventilation systems are:
- The room maintains constant set parameters of the air condition;
- The frequencies with which the fan rotates are regulated;
- The water heater is protected from freezing;
- The degree of contamination of the filters is displayed.
- Thanks to the performance of such functions, the use of ventilation system control helps to save up to 20% of heat and cold consumption.
Elements of ventilation systems
The control system includes basic elements such as sensors, regulators and other actuators.
With the help of sensors, you can receive information about the state of the required object by various parameters (temperature, pressure, humidity, etc.) and control it in the event of the slightest system failure. It is necessary to select sensors strictly in accordance with the conditions of a particular ventilation (operating conditions, range and degree of measurement accuracy, etc.).
Temperature sensors are made for outdoor and indoor use, they can show the temperature on the surface of the pipeline or inside the channel (air duct). They are fixed either on the pipes themselves (on their surface) - external, or perpendicular to the moving air flow in the pipe, air duct - channel sensors. Atmospheric sensors are installed outside the building, above its middle, on the leeward side, and indoor types of sensors should be mounted indoors, at a distance of at least 1-1.5 m from the floor.
Ventilation control also depends on sensors that regulate the degree of humidity, they are for room use and duct. Outwardly, they look like a unit with an electrical device built into it, which measures the relative humidity of the air and converts the received data into electronic signals. For the device to work more accurately, it must be installed at a certain distance from windows, heating devices, ventilation jets and sunlight.
The pressure is controlled by relays and analog pressure sensors. They are installed in places that meet the requirements technical passport. Measure the pressure at one given point, show the pressure difference at several points.
Flow sensors are devices that measure the speed of flow (it can be either liquid or gas) in pipes and air ducts. The calculation of the gas or liquid flow rate is made taking into account the cross-sectional area of the pipe.
Regulators
Regulators are necessary to control the actuating ventilation mechanisms. They receive signals from sensors, process their readings and actuate the actuators of the ventilation system.
Executive mechanisms
A device that starts its work on a command received from the regulator is called an actuator. They are divided according to the method of operation: electrical, mechanical, hydraulic, etc.
All processes that make up the entire ventilation control system are controlled by a device such as an electric control panel.
Control boards (cabinets, block) for ventilation systems
A control panel is a device that provides centralized control over technological processes in enterprises for various purposes(power plants of the gas supply system, water supply, electricity supply, etc.). This is a kind of remote control with instruments for measuring and controlling various parameters, light indicators, control keys and mnemonic diagrams located on it. 
The control unit is completed in such a way that the visibility of the devices and quick access to them are taken into account as much as possible. Together with the control panel for the entire enterprise, group, aggregate, workshop and other panels can be installed in the system.
In ventilation systems, control cabinets are also used. Control, through cabinets, can be carried out by programmed micro controllers (automatically) and by manual adjustment of operating parameters.
The ventilation control panel is the basic unit of this system, it performs the following main functions:
- Includes operation indication and the ventilation unit itself;
- Controls the supply fan;
- Adjusts the speed of the supply fan;
- Controls the air damper actuator;
- Regulates temperature.
Control panels work with various types equipment for ventilation systems. Thanks to it, not only a constant temperature and humidity of the room is maintained, but also the safety of operating equipment is increased.
All indicators necessary for high-quality air exchange are stored for a given period of time. Ventilation shields are used in systems with water and electric heating, systems with heat recovery and recirculation, as well as in exhaust, supply and booster systems.
The ventilation is controlled by the remote control (shield) according to the parameters set by the manufacturer, it can be standard and additional (advanced) functions. The cabinet regulates and records the temperature of the contacts of the ventilation motors, controls the air and heat supply valves, slows down the shutdown time for the supply air fan, gives signals about dirty filters, about the entire operation of the system, warns and fixes accidents, and performs many other tasks assigned to it.
Scheme of control cabinets
Today, control panels for supply, exhaust and supply and exhaust ventilation available in a huge range, so you can choose cabinets for any type and combination of equipment. Most of them are made according to standard scheme work and include frequency converters, controllers, switches and starters, switches, contactors, protective elements, relays and light indicators of various modes. Each component of the device circuit plays a role in common work control panel.
Functional diagram of ventilation automation
So, for example, thanks to frequency converters, it is possible to change the speed of rotation of the fan blades and thereby start the mechanisms in a gentle mode of operation (without jerks and sudden changes). This will reduce energy consumption, reduce the percentage of possible overload, increase the safety of the system and extend the overall life of the system.
Controllers are discrete and analog, they are needed to resolve problems that arise in the operation of ventilation systems. Using controllers, at any time you can quickly respond to the slightest deviation from the norm in the operation of any element of the system and immediately correct it.
How to place control panels?
The ventilation control unit is initially designed and ready for continuous operation in the temperature range from -10 to +55 0C. Cases of cabinets for control are produced from metal and plastic materials, with degrees of protection IP31 and IP45. They work with grounding and a mains current frequency of 50 Hz under a voltage of 220 or 380V.
Due to such technical indicators, control panels supply ventilation are installed in specialized premises, remote from sources of moisture, dust, heating devices and chemical processes. 
It is strictly forbidden to use blocks with increased humidity of the room, possible wetting of the shield, or direct sunlight on it. The manifestation of radio magnetic interference, near the device, is also better to exclude.
Based on the foregoing, we can conclude that a room specially equipped for it - a control room or an electrical panel room - is best suited for a ventilation system control panel.
The ventilation system is one of the main components of any room. The microclimate and, accordingly, the comfortable stay of a person at home or at the workplace depend on it. The ventilation control panel is a device that allows you to centrally control absolutely all components of the automatic ventilation control system.
Unfortunately, most of us have a habit of not paying attention to the quality of room ventilation at all. However, in the most developed economies, ventilation and air conditioning mechanisms have already become a major necessity for human health.
Modern ventilation control systems allow not only to control the volume and speed of air entering the room. They can serve not only for ventilation work- the advantage of modern ventilation mechanisms in providing the possibility of forming the necessary microclimate and regulating all air parameters.
However, the more complex the mechanism, the more efforts must be made to regulate its operation. To this end, the premises are increasingly installed automatic systems controls, which greatly facilitate the task of regulating ventilation and air conditioning systems.
Ventilation automation, in fact, consists in the development of panels for the control and monitoring of system parameters. At the same time, the operation of several systems of climatic equipment can be controlled at once.
Control boards
In fact, the ventilation control panel is a kind of remote control, which houses a variety of devices, sensors, indicators, mechanical circuits, keys, etc.
Control panels have a fairly wide functional purpose:
- Possibility of turning on the ventilation unit and indicators of its operation.
- Regulation of the supply fan.
- Gate drive control (ventilation damper).
- Temperature control and management.
- Signaling about the presence of contamination in the filters.
- Prevention and fixation of accidents.
- Instructions (operating and service)
The TPD-283U-H control panel with a color touch screen is included in the standard supply and air handling units Breezart. Remote control functions and capabilities:
- Turning on / off the ventilation unit.
- Display of the current state, in case of an accident - code and short description errors.
- Operation mode setting: Heating / Cooling (if chiller is present) / Disabled.
- Climate control (in the presence of a cooler and an outside temperature sensor): automatic switching between Heating / Cooling modes.
- Temperature and humidity control (if a humidifier is available).
- 10 step fan speed control.
- Weekly scenarios to turn on / off, change temperature, speed and humidity (if a humidifier is present) on certain days of the week at a given time.
- Date and time display (the remote control has a non-volatile clock that does not reset when there is no power), setting the clock correction.
- Display of the actual clogging of the air filter (from 0 to 100%). At 80% contamination, a warning appears in the status bar.
- Independent air flow control for each room (VAV mode, up to 20 zones, required optional equipment). Ability to centrally set the air flow in each zone, including by scenarios, or using a local controller / CO2 sensor.
- Network management. The remote control has an Ethernet port for connecting to a local network and controlling the ventilation unit using a computer.
- Enable/disable features:
- "Restart". Resume normal operation in the event of a power failure.
- "Comfort". Automatic reduction of the fan speed, if during the cold period the heater power is not enough to heat the air to the set temperature.
- Setting the brightness of the display in day and night modes, setting the screensaver (screen saver) with the ability to completely turn off the backlight in night mode.
- Service settings:
- Setting the minimum and maximum fan speeds for setting the airflow at speeds 1 and 8.
- Setting up VAV mode and JL201 modules that control air valve actuators.
- Setting the remote control mode from an external switch.
- Only for 550 Lux: setting the supply voltage (220 / 380V) and heater power (1.6 / 3.2 / 4.8 kW)
Video presentation of the control panel of the 550 Lux ventilation unit (control panels of other models have a similar interface):
Remote control installation
The console is designed to be mounted in a PE000031 two-gang brick or concrete box or PE030041 cavity wall box (other types of boxes may not be suitable due to the shape of the interior space). The remote control can also be installed in a wall mount box.
