The printed circuit boards of electronic devices are exposed to increasingly demanding ambient conditions. The enclosures protecting the sensitive electronic components are subject to various requirements – ingress protection degrees, temperature, humidity, etc. In line with industry trends, Sentera never fails to meet all the requirements – from various mounting options to protection classes. And since we develop our enclosures in-house, besides offering surface and flush mounting options, we develop enclosures for DIN rail mounting for control cabinet applications.
DIN rails are metal rails that conform to industry standards and are used to mount industrial processing equipment. Installation is very simple – just mount your Sentera device onto a standard 3,5 mm DIN rail and lock it using the pin at the bottom of the device.
Why DIN rail enclosures?
DIN rail electronics have been around for a long time and are becoming increasingly popular in industrial applications across a wide range of industries. They make the perfect packaging for electronics. Not only do they protect the electronics, but they can also be easily mounted onto standard DIN rails and integrated into the control cabinet.
DIN rail electronics have been around for a long time and are becoming increasingly popular in industrial applications across a wide range of industries. They make the perfect packaging for electronics. Not only do they protect the electronics, but they can also be easily mounted onto standard DIN rails and integrated into the control cabinet.
When it comes to HVAC systems, DIN rail enclosures offer specific advantages that align well with the needs of these systems:
Compact and organized installation: HVAC systems often require the integration of various control components, such as thermostats, sensors, relays, and controllers. DIN rail enclosures provide a compact and organized way to house these components within control panels, ensuring that space is efficiently used and the layout remains clean and manageable.
Ease of maintenance and troubleshooting: access to individual components is simplified for regular maintenance and troubleshooting, allowing for quick diagnostics and replacement of faulty parts without disturbing other components.
Modularity and expandability: As HVAC systems are upgraded or expanded to meet changing building requirements, the modular nature of DIN rail enclosures allows for easy addition or replacement of components. This flexibility is crucial for adapting to new technologies or changes in building use.
Improved wiring and connectivity: The organized layout provided by DIN rail enclosures simplifies wiring for HVAC control systems.
Enhanced safety: Properly housed components in DIN rail enclosures reduce the risk of electrical faults, such as short circuits, which is vital for the safe operation of HVAC systems. This is especially important in systems that are critical to maintaining air quality and temperature control in buildings.
Compact and organized installation: HVAC systems often require the integration of various control components, such as thermostats, sensors, relays, and controllers. DIN rail enclosures provide a compact and organized way to house these components within control panels, ensuring that space is efficiently used and the layout remains clean and manageable.
Ease of maintenance and troubleshooting: access to individual components is simplified for regular maintenance and troubleshooting, allowing for quick diagnostics and replacement of faulty parts without disturbing other components.
Modularity and expandability: As HVAC systems are upgraded or expanded to meet changing building requirements, the modular nature of DIN rail enclosures allows for easy addition or replacement of components. This flexibility is crucial for adapting to new technologies or changes in building use.
Improved wiring and connectivity: The organized layout provided by DIN rail enclosures simplifies wiring for HVAC control systems.
Enhanced safety: Properly housed components in DIN rail enclosures reduce the risk of electrical faults, such as short circuits, which is vital for the safe operation of HVAC systems. This is especially important in systems that are critical to maintaining air quality and temperature control in buildings.
The ease of installing and organizing components on a DIN rail reduces labour costs and the complexity of setting up HVAC control panels. This can be particularly beneficial in large-scale HVAC installations where time and efficiency are key factors.
Sentera offers a wide selection of DIN rail mounted products, starting from the simplest to the most complex:
HVAC controllers
The DRPUM universal HVAC controller is a versatile programmable controller designed for specific applications, requiring dedicated firmware.
Variable fan speed controllers
Manual control
The DRE controller is intended for single-phase voltage controllable motors with a maximum current of 2,5 A. It regulates fan speed by varying the motor voltage via phase angle control - Triac technology. The power supply is 230 VAC. The minimum and maximum speed can be adjusted via Modbus RTU. The motor voltage is regulated via the 3-button keyboard in the range between the selected minimum and maximum speed. Kick start or soft start acceleration can be selected via Modbus RTU.
Manual control
The DRE controller is intended for single-phase voltage controllable motors with a maximum current of 2,5 A. It regulates fan speed by varying the motor voltage via phase angle control - Triac technology. The power supply is 230 VAC. The minimum and maximum speed can be adjusted via Modbus RTU. The motor voltage is regulated via the 3-button keyboard in the range between the selected minimum and maximum speed. Kick start or soft start acceleration can be selected via Modbus RTU. The DRX series are electronic fan speed controllers. They control single-phase voltage controllable motors with a maximum current of 2,5 A. The fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. The motor voltage can be manually regulated via the rotary knob from maximum to minimum.
The DRY series are electronic fan speed controllers. They control single-phase voltage controllable motors with a maximum current of 2,5 A. The fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. The motor voltage can be manually regulated via the rotary knob from minimum to maximum.
Analogue input motor control
The MVS-1 series are electronic fan speed controllers with analogue input. They regulate the speed of single-phase voltage controllable motors with a maximum current of 10 A. The AC fan speed is controlled by varying the motor voltage via phase angle control - Triac technology. The minimum and maximum speed is adjustable via trimmers. The motor voltage can be regulated via the analogue input or via Modbus RTU. Kick start or soft start acceleration and the operating mode is selectable via Modbus RTU.
The MVSS1 series are electronic fan speed controllers with analogue input. Their TK monitoring function deactivates the motor in case of overheating. They regulate the speed of single-phase voltage controllable motors with a maximum current of 10 A. The AC fan speed is controlled by varying the motor voltage via phase angle control - Triac technology. The minimum and maximum speed is adjustable via trimmers. The motor voltage can be regulated via the analogue input or via Modbus RTU. Kick start or soft start acceleration and the operating mode is selectable via Modbus RTU. A remote start/stop command can be generated via the digital input.
The TVSS5 series are electronic fan speed controllers with analogue input. The TK monitoring function protects motors against overheating. They control three-phase voltage controllable motors with a maximum current of 6 A. The fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. The minimum and maximum speed is adjustable via trimmers. The motor voltage can be regulated via the analogue input or via Modbus RTU. Kick start or soft start acceleration and the operating mode is selectable via Modbus RTU. A remote start/stop command can be generated via the digital input.
The TVSS5 series are electronic fan speed controllers with analogue input. The TK monitoring function protects motors against overheating. They control three-phase voltage controllable motors with a maximum current of 6 A. The fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. The minimum and maximum speed is adjustable via trimmers. The motor voltage can be regulated via the analogue input or via Modbus RTU. Kick start or soft start acceleration and the operating mode is selectable via Modbus RTU. A remote start/stop command can be generated via the digital input.
Frequency inverters
The FI series of frequency drives are designed to work with a wide range of motor types, making them highly versatile for various HVAC applications. They are compatible with both induction motors (AC motors) and permanent magnet motors, providing precise speed control and energy efficiency across different motor technologies. Our range covers single ad three-phase motors control and 230 VAC and 400 VAC supply. They feature both DIN rail and keyhole mounting options.
The FI series of frequency drives are designed to work with a wide range of motor types, making them highly versatile for various HVAC applications. They are compatible with both induction motors (AC motors) and permanent magnet motors, providing precise speed control and energy efficiency across different motor technologies. Our range covers single ad three-phase motors control and 230 VAC and 400 VAC supply. They feature both DIN rail and keyhole mounting options.
Power supplies
Switch mode power supplies - 24 VDC
The DRPS8-24-40 is a 24-volt switched-mode power supply (SMPS). This module accepts an input voltage of 85–264 VAC / 50–60 Hz. The maximum load on this switched mode power supply is 40 Watts. The loads can be connected via the terminal block or via the RJ45 connector.
Switch mode power supplies - 24 VDCThe DRPS8-24-40 is a 24-volt switched-mode power supply (SMPS). This module accepts an input voltage of 85–264 VAC / 50–60 Hz. The maximum load on this switched mode power supply is 40 Watts. The loads can be connected via the terminal block or via the RJ45 connector.
The DHDR8-24-36 is 24 Volt power supply module is an electrical device used to convert input voltage (typically AC mains voltage or a different DC voltage) into a stable 24 VDC (volts of direct current) output voltage. The device accepts an input voltage of 85–264 VAC / 50–60 Hz and the maximum load of 36 W can be connected to it.
Linear power supplies
The SATD1 series of safety transformers are linear power supplies, which means they can only produce a voltage lower than the supply (input) voltage. Sentera’s linear power supply modules utilize transformer technology, thanks to which they operate noiselessly. This series is comprised of compact single-phase safety isolating transformers encapsulated in a plastic modular enclosure. Safety transformers are used for electrical isolation of the input (mains supply) and output (12 or 24 VAC). They are suitable for creating SELV (safety extra-low voltage) and PELV (protective extra-low voltage) circuits by limiting the output voltage. The units are short circuit and overload protected with a built-in PTC in the primary winding which automatically restores power when the transformer is cooled down or the load is removed.
Linear power supplies
The SATD1 series of safety transformers are linear power supplies, which means they can only produce a voltage lower than the supply (input) voltage. Sentera’s linear power supply modules utilize transformer technology, thanks to which they operate noiselessly. This series is comprised of compact single-phase safety isolating transformers encapsulated in a plastic modular enclosure. Safety transformers are used for electrical isolation of the input (mains supply) and output (12 or 24 VAC). They are suitable for creating SELV (safety extra-low voltage) and PELV (protective extra-low voltage) circuits by limiting the output voltage. The units are short circuit and overload protected with a built-in PTC in the primary winding which automatically restores power when the transformer is cooled down or the load is removed.
Modbus RTU repeater and power supply
The DPOM8-24-20 is a 24 VDC switch mode power supply featuring a built-in Modbus RTU repeater. It offers protection against short circuit, overload and overvoltage. The maximum load is 900 mA or 20 W. The 24 VDC supply is only available via the output channel. The Modbus RTU communication of both channels is reinforced by the built-in half-duplex line repeater.
Modbus distribution boxes
The DMDBM22 is a distribution box for Modbus RTU communication and supply voltage. It can be used to interconnect Sentera devices. It has 10 channels for 24 VDC powered devices and 12 channels for 3,3 VDC powered devices. Modbus RTU communication and 24 VDC supply voltage are transmitted via the RJ45 sockets. Modbus RTU communication and 3,3 VDC supply voltage are transmitted via the RJ12 sockets. External power supply is required for both 24 VDC and 3,3 VDC supply.
The DLDBM22 is a distribution box for Modbus RTU communication and supply voltage used to interconnect Sentera devices. It has 10 channels for 24 VDC powered devices and 12 channels for 3,3 VDC powered devices. Modbus RTU communication and 24 VDC supply voltage is transmitted via the RJ45 sockets. Modbus RTU communication and 3,3 VDC supply voltage is transmitted via the RJ12 sockets. If an external 24 VDC power supply is connected to one of the RJ45 sockets, a supply voltage of 3,3 VDC will be available via the RJ12 sockets. The 3,3 VDC supply voltage is automatically derived from the 24 VDC supply voltage.
Converters
The DRM-M series are relay output modules for Modbus RTU networks. They feature 2 or 4 C/O relays with a normally open and normally closed contact. The status of the relays can be controlled by Modbus RTU communication.
The DIO-M series an Input-Output module for Modbus RTU networks. You can choose between 4 digital inputs and 4 digital outputs or 4 digital inputs and 2 relay outputs. The digital outputs are activated via a Modbus RTU. The status of the digital inputs is translated into Modbus RTU registers. The relay outputs can be triggered via a Modbus RTU register.
The DRM-M series are relay output modules for Modbus RTU networks. They feature 2 or 4 C/O relays with a normally open and normally closed contact. The status of the relays can be controlled by Modbus RTU communication.
The DIO-M series an Input-Output module for Modbus RTU networks. You can choose between 4 digital inputs and 4 digital outputs or 4 digital inputs and 2 relay outputs. The digital outputs are activated via a Modbus RTU. The status of the digital inputs is translated into Modbus RTU registers. The relay outputs can be triggered via a Modbus RTU register.
The DDACM series are analogue to digital (Modbus RTU) converter modules supplied via Power over Modbus. The DADCM/08 product version has four analogue / modulating and four analogue inputs while the DADCM/44 version has four analogue / modulating inputs and four temperature inputs. The type of input is selected via Modbus RTU communication. The input values are transferred to Modbus RTU.
Sentera internet gateways
The DIG-M-2 internet gateway connects a single Sentera device or a network of devices to the Internet in order to configure or monitor them via SenteraWeb. The DIG-M-2 makes wireless or wired connection with the Internet router. The unit has 2 Modbus RTU channels - a Master channel to communicate with the connected Slave devices, and a Slave channel to make the unit accessible for a Master controller or a BMS.
The DIGWM is an internet gateway to connect a stand-alone Sentera device or a network of devices to the Internet in order to configure or monitor them via SenteraWeb. The DIGWM makes wireless connection with an existing Wi-Fi network. The unit has 2 Modbus RTU channels - a Master channel to communicate with the connected Slave devices, and a Slave channel to make the unit accessible for a Master controller or a BMS.
DIN rail enclosures in HVAC systems provide an organised, reliable and efficient way to house and protect control components, making them an ideal choice for ensuring the smooth operation and longevity of HVAC systems. Whether you’re upgrading an existing system or planning a new installation, Sentera’s DIN rail enclosures provide the perfect balance of performance and practicality. Choose Sentera for your HVAC control needs, and experience the difference in quality and reliability.