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EU declaration conformity
Fan speed controller | run indicator | 2,5 A |From High to Low
Product description
This is a variable speed controller with run indicator for single-phase motors. The maximum motor current is 2,5 A.
It regulates AC fan speed from high to low. The fan speed can be set via the potentiometer. This potentiometer has an OFF-position (counterclockwise).
The minimum speed can be adjusted via an internal trimmer. The enclosure allows inset mounting (IP44) or surface mounting (IP54). The orange operating LED indicator is integrated in the enclosure.
The supply voltage is 230 VAC. Fan speed is regulated by reducing the motor voltage via phase angle control - TRIAC technology.
Additional specifications and description
Why LTX is your controller
As a rule, residential environments require a simple control solution that is also cost effective. Moreover, at home the looks always matter! The design of the LTX series is plain and fits any interior style. It is unobtrusive and can be built into the wall if you want it smoothly melted into the background mount it onto the wall in case the building construction requires so.
Controlling the fan speed using this controller is as easy as turning on and off the lights at home. Via its only button – a rotary knob - the fan speed is set from high to low revs 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.
About TRIAC technique
TRIAC is a contraction of triode for alternating current. It is a three terminal electronic component that conducts current in either direction when triggered. In general, the TRIAC is a semiconductor that can be used for AC systems as a switch. The technique used 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.
OFF position
The LTX features an OFF position - turning the knob counterclockwise stops the motor. If necessary, the OFF position can be deactivated. In this case, the motor can continue 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 active by turning the knob. As standard, the supply voltage to the LTX is connected via terminals ↑ and N. If you would like to disable the OFF position, you need to connect the supply voltage via the terminals intended for the unregulated output, namely ↓ and N.
Unregulated output
The LTX features an unregulated output which is active when the motor is enabled. If the supply voltage is connected to ↑ 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. So the controller regulates the fan through the so called “regulated output” via controlling the voltage with the option to regulate one more device. But this time the voltage is “unregulated”, i.e. either 0 V or 230 V.
If you connect the supply voltage to the LTX as standard and as advised by the relevant documentation, the unregulated output of your controller will be active when the motor is enabled. This means that when the fan stops, the connected external device will be disabled – the damper will be closed or the run indicator will switch off. While the fan is working, the damper will remain open and the indication light will be switched on. The maximum current is 2 A.
Minimum speed trimmer
The LTX features an internal trimmer for adjusting the minimum revs of the fan. The motor might produce a little more noise at lower speeds. The minimum motor voltage can be adjusted in order to avoid motor stalling at low speeds via the minimum speed trimmer. It can be set within the range 20 - 70% of the supply voltage, which is equal to about 80 – 180 VAC.
Spare fuse
The LTX features two fuses – a working and a spare one. Both of them are placed in the holder of the device itself. No need to look for a fuse in case the working one blows due to overloading its capacity or a short circuit! You can find the right size and type of fuse in the device itself.
Use
The series is developed to control AC fans via reducing the motor voltage. AC motors run on an alternating current and convert alternating current into mechanical power. This means the series is suitable only for voltage controllable motors. You can connect several motors as long as the current limit is not exceeded. They will all work at the same speed.
Attention: If you are not sure about your motor type, we strongly advise you to read carefully its accompanying documentation or contact the motor manufacturer!
Two-in-one enclosure
The enclosure of the LTX is made of solid ASA plastic in cream colour (RAL9010). This is UV resistant material and protects the electronics against dust, water and impacts. But its most important feature is featuring both flush and wall mounting. Basically, you can install the LTX in any kind of wall. If you choose the flush mounting option, it fits perfectly the standard European box that melts into the background. The protection class is IP44 for flush and IP54 for surface mounting. Furthermore, it looks really nice and is a good match for any interior style. Cleaning it is very easy using only a damp cloth.
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