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Metal enclosure with LED indicators, cable glands Metal enclosure with LED indicators, cable glands Metal enclosure with LED indicators, cable glands Metal enclosure with cable glands Metal enclosure
Metal enclosure with LED indicators, cable glands
Metal enclosure with LED indicators, cable glands
Metal enclosure with LED indicators, cable glands
Metal enclosure with cable glands
Metal enclosure

AC fan speed controller 400 V | analogue input | 6 A


Product description

This transformer controller has a 0-10 V analogue input. It controls three-phase 400 V motors. The (combined) maximum motor current is 6 A. The speed is regulated in 5 steps by reducing the motor voltage via autotransformer technology. One of these 5 levels is selected via the analogue control signal (0-10 V) or via an external potentiometer. The output voltage with a perfect sinusoidal shape guarantees quiet motor operation. The TK monitoring function disables the motor in case of overheating. The IP54 enclosure can be surface mounted. The supply voltage is 400 VAC.


Article code STVS4-60L40
GTIN 0.540.100.301.636.7
Category AC fan speed control - analogue input
Available
Current stock 0 U.
Factory lead time 4 Week(s)
Documents

Additional specifications and description


What is a transformer controller?
A transformer controller regulates fan speed in steps by reducing the motor voltage. This is done via autotransformers. This technology is very reliable and robust. It generates a motor voltage with a perfect sinusoidal shape. This technology guarantees a quiet motor operation and an extended service life. A special impregnated coating reduces the electrical noise of the autotransformers.

0-10 V control signal
One of the available fan speed levels can be selected via the 0-10 V input signal. If there is no 0-10 V signal available, an external potentiometer can be connected to the STVS4 controller. The MTP-X10K-NA potentiometer can be connected to the 12 VDC supply of the STVS4 controller.
E.g. input signal 2 V activates speed level 1 (130 VAC to the motor), input signal 4 V activates speed level 2 (180 VAC to the motor), etc.

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.

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.

Unregulated output
The extra, unregulated output (230 VAC) is active when the motor is enabled. It can be used to control an external run-indicator, a damper, etc.
E.g. when the fan is deactivated, the dampers is closed. When the fan is active, the damper is open.

Solid enclosure
The enclosure is made of high-quality steel. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture.