.webp "Day-night 5-step speed regulator")
.webp "REU 3 5-step speed regulator")
.webp "5-step speed regulator optimal speed selection")
.webp "Two-speed 5-step speed controller")
.webp "High-Low 5-step speed controller")
.webp "Fan speed controller")
EU declaration conformity
Fan speed controller | day-night function | TK monitoring | 13 A
Product description
This controller has two speeds for single-phase motors with thermal contacts (TK). The maximum motor current (combined) is 13 A.
This controller has two distinct 5-step switches for selecting between two ideal fan speeds. When the motor is turned on, a dry contact input may be used to switch between the two speeds.
In the event of overheating, the TK monitoring feature shuts the motor. The motor will automatically resume after a power outage. The alarm and unregulated outputs can be used to operate external devices in order to produce alerts or validate normal operation.
The fan speed is controlled by lowering the motor voltage using autotransformers. This method produces an output voltage with a perfect sinusoidal form, ensuring silent motor running.
The enclosure is surface mountable and provides IP54 protection against dirt, dust, and moisture entry.
Additional specifications and description
The SC2A1 series fan speed controller provides a range of features for efficient fan speed control, remote operation, motor protection, and compatibility with external devices. Its various functionalities are designed to optimize energy usage, enhance motor safety, and ensure reliable operation in different environments. Via two separate 5-step rotary switches, two optimal fan speeds can be selected. When the motor is active, it is possible to switch between the two speeds via a dry contact input. An external clock can activate high speed during the day and low speed during the night.
Remote start-stop
Via two inputs (normally closed (CC) and normally open (CO)), the motor can be remotely enabled or disabled. There is a normally open input and a normally closed input available. Via remote switch - connected to the normally open input - the motor can be enabled or disabled. A smoke alarm is connected to the normally closed input. If a smoke alarm occurs, the motor will be disabled, regardless of the status of the other input.
Thermal motor protection
This fan speed controller can monitor thermal motor contacts (TK or thermal contacts measure temperature in the motor windings). In case of motor overheating, the TK monitoring function will disable the motor to prevent motor damage. If the motor is not equipped with TK contacts, both TK terminals of the controller must be bridged to simulate normal motor temperature.
Alarm output
The alarm output (230 VAC) is activated when motor problems occur. It can be used to generate alerts. For instance, in case of motor overheating, the alarm output is activated. The TK monitoring function will disable the motor to prevent further damage. The alarm output can control a warning light.
Auto reset after power failure
In case of a power failure, this controller will automatically reset itself. When the power is restored, the motor will restart automatically.
Extra unregulated output
The fan speed controller features an additional unregulated output (230 VAC) that becomes active when the motor is enabled. This output is either ON (230 Volt) or OFF (0 Volt) and is therefore referred to as the "unregulated output." It has a maximum current rating of 2 A. This output is commonly utilized to control various external components, such as a run indicator, damper, relay, and more. For instance, when the fan is not running, the damper is closed, and when the fan is active, the damper opens.
Metal enclosure for indoor wall mounting
The primary purpose of an enclosure is to prevent the interior from being contaminated or affected by external debris or environmental factors. That is why the quality of our enclosures is so important to us. As standard, Sentera’s transformer fan speed controllers with rated maximum current above 7,5 A are housed in a metal enclosure resistant to external mechanical impact with paint finish. They are EN 62208 certified and their ingress protection rating is IP54 against dust and water. They can withstand accidental bumps, collisions, or other physical forces without compromising their structure or the items inside. This feature is particularly important in environments where there is a higher risk of such impacts, ensuring the protection of the enclosed components.
Remote start-stop
Via two inputs (normally closed (CC) and normally open (CO)), the motor can be remotely enabled or disabled. There is a normally open input and a normally closed input available. Via remote switch - connected to the normally open input - the motor can be enabled or disabled. A smoke alarm is connected to the normally closed input. If a smoke alarm occurs, the motor will be disabled, regardless of the status of the other input.
Thermal motor protection
This fan speed controller can monitor thermal motor contacts (TK or thermal contacts measure temperature in the motor windings). In case of motor overheating, the TK monitoring function will disable the motor to prevent motor damage. If the motor is not equipped with TK contacts, both TK terminals of the controller must be bridged to simulate normal motor temperature.
Alarm output
The alarm output (230 VAC) is activated when motor problems occur. It can be used to generate alerts. For instance, in case of motor overheating, the alarm output is activated. The TK monitoring function will disable the motor to prevent further damage. The alarm output can control a warning light.
Auto reset after power failure
In case of a power failure, this controller will automatically reset itself. When the power is restored, the motor will restart automatically.
Extra unregulated output
The fan speed controller features an additional unregulated output (230 VAC) that becomes active when the motor is enabled. This output is either ON (230 Volt) or OFF (0 Volt) and is therefore referred to as the "unregulated output." It has a maximum current rating of 2 A. This output is commonly utilized to control various external components, such as a run indicator, damper, relay, and more. For instance, when the fan is not running, the damper is closed, and when the fan is active, the damper opens.
Metal enclosure for indoor wall mounting
The primary purpose of an enclosure is to prevent the interior from being contaminated or affected by external debris or environmental factors. That is why the quality of our enclosures is so important to us. As standard, Sentera’s transformer fan speed controllers with rated maximum current above 7,5 A are housed in a metal enclosure resistant to external mechanical impact with paint finish. They are EN 62208 certified and their ingress protection rating is IP54 against dust and water. They can withstand accidental bumps, collisions, or other physical forces without compromising their structure or the items inside. This feature is particularly important in environments where there is a higher risk of such impacts, ensuring the protection of the enclosed components.
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