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.webp "400 Volt fan speed controller")
EU declaration conformity
400 V transformer fan speed controller | TK monitoring | 6 A
Product description
Transformer fan speed controller with thermal connections for a 400 V motor. The maximum motor current (combined) is 6 A.
The fan speed may be adjusted using the rotary switch on the front panel. In the event of overheating, the TK monitoring feature shuts the motor.
The fan speed is controlled in five stages by lowering the motor voltage. The exact sinusoidal form of the output voltage ensures silent motor running.
The enclosure is surface mountable and provides IP54 protection against dirt, dust, and moisture entry.
The power supply voltage is 400 volts.
Additional specifications and description
General information
The STRS4-60L40 is made for controlling 400 V, three-phase fans in five steps, using an autotransformer technology. This allows for the adjustment of the voltage supplied to the fan motor, which in turn affects the motor's rotational speed and, consequently, the fan speed. The primary winding of the autotransformer has five taps or terminals that deliver various voltage levels in accordance with different fan speed settings. A 5-step rotary switch is used as the control mechanism. The transformer taps are adjusted when a particular speed setting on the rotary switch is chosen. This alters the voltage supplied to the fan motor and regulates the fan speed.
Connections
To ensure proper connections and safe operation, you must adhere to specific rules when wiring a three-phase fan motor. Finding the motor leads is the first step. Three-phase motors typically have six leads with the letters U, V and W denoting the three phases. These are the outputs to the motor, and the R, S and T terminals are used to supply power to the controller. To find out the motor's voltage rating, check its nameplate or specifications. It is crucial to match the power supply voltage to the motor voltage.
You may need to wire the motor in either a delta (Δ) or a wye/star (Y) configuration, depending on the motor voltage and the available power supply. The recommended wiring configuration for the particular motor model should be stated on the motor nameplate or in the manufacturer's documentation. Observe the grounding regulations outlined by the local electrical codes and regulations. Three-phase motors typically need to be grounded for safety reasons.
Installation
To ensure proper functionality and safety, it is crucial to adhere to specific installation instructions and guidelines when mounting the fan speed controller on a wall or panel.
Select a stable and secure mounting surface that can hold the controller's weight. Make sure the surface is even and devoid of any obstructions or protrusions that might hinder the controller's installation or use. Place the controller vertically on the wall. Make sure the area around the controller has adequate ventilation. To avoid overheating and guarantee ideal cooling, leave enough room around the controller for airflow, particularly on the sides and top. Install the controller in a location where the ambient temperature is within a reasonable range. Avoid overly warm areas, such as those that are close to heat sources or that are in direct sunlight, as these can have a negative impact on the controller's functionality and lifespan. Observe the wiring instructions for the controller. Make sure the wiring is securely fastened and shielded to avoid damaging the controller or unintended contact. Take into account any particular environmental factors, such as exposure to moisture, dust, or corrosive materials, that may affect the controller performance. Use suitable enclosures or covers, if necessary, to further secure the controller safety. Install the controller in a spot that is easy to reach for servicing, inspection and making adjustments as necessary. In order to access the switches, terminals, and any other user interface components, make sure there is enough space around the controller.
Enclosure
The EN certified metal enclosure of the STRS4-60L40 has a paint coating that is resistant to external mechanical impacts. The IP54 ingress protection rating ensures that the enclosures are built to offer a high level of protection against dust and water ingress, that they are successfully sealed against dust particles, and that they can withstand water splashes from all directions, making them suitable for moderately harsh environments.
Connections
To ensure proper connections and safe operation, you must adhere to specific rules when wiring a three-phase fan motor. Finding the motor leads is the first step. Three-phase motors typically have six leads with the letters U, V and W denoting the three phases. These are the outputs to the motor, and the R, S and T terminals are used to supply power to the controller. To find out the motor's voltage rating, check its nameplate or specifications. It is crucial to match the power supply voltage to the motor voltage.
You may need to wire the motor in either a delta (Δ) or a wye/star (Y) configuration, depending on the motor voltage and the available power supply. The recommended wiring configuration for the particular motor model should be stated on the motor nameplate or in the manufacturer's documentation. Observe the grounding regulations outlined by the local electrical codes and regulations. Three-phase motors typically need to be grounded for safety reasons.
Installation
To ensure proper functionality and safety, it is crucial to adhere to specific installation instructions and guidelines when mounting the fan speed controller on a wall or panel.
Select a stable and secure mounting surface that can hold the controller's weight. Make sure the surface is even and devoid of any obstructions or protrusions that might hinder the controller's installation or use. Place the controller vertically on the wall. Make sure the area around the controller has adequate ventilation. To avoid overheating and guarantee ideal cooling, leave enough room around the controller for airflow, particularly on the sides and top. Install the controller in a location where the ambient temperature is within a reasonable range. Avoid overly warm areas, such as those that are close to heat sources or that are in direct sunlight, as these can have a negative impact on the controller's functionality and lifespan. Observe the wiring instructions for the controller. Make sure the wiring is securely fastened and shielded to avoid damaging the controller or unintended contact. Take into account any particular environmental factors, such as exposure to moisture, dust, or corrosive materials, that may affect the controller performance. Use suitable enclosures or covers, if necessary, to further secure the controller safety. Install the controller in a spot that is easy to reach for servicing, inspection and making adjustments as necessary. In order to access the switches, terminals, and any other user interface components, make sure there is enough space around the controller.
Enclosure
The EN certified metal enclosure of the STRS4-60L40 has a paint coating that is resistant to external mechanical impacts. The IP54 ingress protection rating ensures that the enclosures are built to offer a high level of protection against dust and water ingress, that they are successfully sealed against dust particles, and that they can withstand water splashes from all directions, making them suitable for moderately harsh environments.
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