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EU declaration conformity
Variable fan speed controller for DIN rail - 1,5 A
Product description
The electronic fan speed controller from the DRY series is a DIN rail-mounted electronic controller designed for single-phase voltage controllable motors.
It allows for manual adjustment of the motor voltage using a rotary knob, providing an output voltage variation from 60 to 230 VAC.
Maximum motor current of 1.5 A.
The rotary knob facilitates the regulation of the output voltage from minimum to maximum, including an OFF position. The minimum speed can be fine-tuned through a trimmer.
A green LED indicates the operational status.
The DIN rail mounting, compliant with the DIN EN 50022 standard, ensures easy integration into standardized installations.
The DRX series provides low-to-high output regulation and allows for minimum output voltage adjustment, catering to specific ventilation application needs.
Additional specifications and description
Simple and reliable
What we are usually looking for when it comes to ventilation control is a simple control solution that is also cost effective and reliable. Controlling the fan speed using this controller is as easy as turning on and off the lighting. Via its only button – the built-in potentiometer - the fan speed is set from minimum to maximum by simply turning it clockwise.
The device a solid and reliable control solution which reduces the noise levels emitted by the fan and increases the service life of the motor connected to it thanks to the TRIAC technique used. Reduced fan speed uses significantly less power than maximum operation and can often be employed, typically during unoccupied or low occupancy. What you get is simplified manual control, reliability and efficiency.
What is TRIAC
TRIAC (contraction of triode for alternating current) is a three terminal electronic component that conducts current in either direction when triggered. In general, a TRIAC device is a semiconductor that can be used for AC systems as a switch. The technique used here is called phase-angle control and employs the ability of the power semiconductor to switch on current when its gate is energised and to automatically switch off again when the current flowing through it falls to zero.
Use
This series is intended for AC fans and control is realised via reducing the motor voltage. AC motors run on an alternating current and convert alternating current into mechanical power. This means that the series is suitable only for voltage controllable motors. You can connect several motors to the controller as long as the current limit is not exceeded. If you are not sure about your motor type, we strongly advise you to read carefully its accompanying documentation or contact the motor manufacturer.
OFF position
The DRY features an OFF position - turning the potentiometer anticlockwise stops the motor. If necessary, the OFF position can be deactivated by making the right connections.
In this case, the motor can keep on working when the power supply is available, i.e. when the device is connected to the mains, even though the device has not been manually enabled by turning the potentiometer. As standard, the supply voltage is connected via terminals L and N. Should you disable the OFF position, you need to connect the supply voltage via the terminals intended for the unregulated output, namely L1 and N.
Extra output
The DRY features an unregulated output which is active when the motor is enabled. If the supply voltage is connected to L1 and N, the unregulated output is active while the motor is in operation. The unregulated output is used to control external devices such as dampers, relays, run indicators, etc. that can work without the need to regulate the incoming voltage. It is named so since it is either 0 V or 230 V. The maximum current of this output is 0,5 A.
Minimum speed trimmer
The DRY features a trimmer for adjusting the minimum fan speed placed on its front. The motor might produce a little more noise at lower speeds and in order to minimise these and to avoid motor stalling at low speeds the minimum motor voltage can be adjusted via the minimum speed trimmer. It can be set within the range 20 - 70% of the supply voltage.
DIN rail mounted
This fan speed controller is DIN rail mounted inside an electric 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. Installation is very simple – just mount the device onto the rail and lock it using the pin at the bottom of the device. The ingress protection rating of the enclosure is IP30 – protected from dirt and dust.
What we are usually looking for when it comes to ventilation control is a simple control solution that is also cost effective and reliable. Controlling the fan speed using this controller is as easy as turning on and off the lighting. Via its only button – the built-in potentiometer - the fan speed is set from minimum to maximum by simply turning it clockwise.
The device a solid and reliable control solution which reduces the noise levels emitted by the fan and increases the service life of the motor connected to it thanks to the TRIAC technique used. Reduced fan speed uses significantly less power than maximum operation and can often be employed, typically during unoccupied or low occupancy. What you get is simplified manual control, reliability and efficiency.
What is TRIAC
TRIAC (contraction of triode for alternating current) is a three terminal electronic component that conducts current in either direction when triggered. In general, a TRIAC device is a semiconductor that can be used for AC systems as a switch. The technique used here is called phase-angle control and employs the ability of the power semiconductor to switch on current when its gate is energised and to automatically switch off again when the current flowing through it falls to zero.
Use
This series is intended for AC fans and control is realised via reducing the motor voltage. AC motors run on an alternating current and convert alternating current into mechanical power. This means that the series is suitable only for voltage controllable motors. You can connect several motors to the controller as long as the current limit is not exceeded. If you are not sure about your motor type, we strongly advise you to read carefully its accompanying documentation or contact the motor manufacturer.
OFF position
The DRY features an OFF position - turning the potentiometer anticlockwise stops the motor. If necessary, the OFF position can be deactivated by making the right connections.
In this case, the motor can keep on working when the power supply is available, i.e. when the device is connected to the mains, even though the device has not been manually enabled by turning the potentiometer. As standard, the supply voltage is connected via terminals L and N. Should you disable the OFF position, you need to connect the supply voltage via the terminals intended for the unregulated output, namely L1 and N.
Extra output
The DRY features an unregulated output which is active when the motor is enabled. If the supply voltage is connected to L1 and N, the unregulated output is active while the motor is in operation. The unregulated output is used to control external devices such as dampers, relays, run indicators, etc. that can work without the need to regulate the incoming voltage. It is named so since it is either 0 V or 230 V. The maximum current of this output is 0,5 A.
Minimum speed trimmer
The DRY features a trimmer for adjusting the minimum fan speed placed on its front. The motor might produce a little more noise at lower speeds and in order to minimise these and to avoid motor stalling at low speeds the minimum motor voltage can be adjusted via the minimum speed trimmer. It can be set within the range 20 - 70% of the supply voltage.
DIN rail mounted
This fan speed controller is DIN rail mounted inside an electric 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. Installation is very simple – just mount the device onto the rail and lock it using the pin at the bottom of the device. The ingress protection rating of the enclosure is IP30 – protected from dirt and dust.
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