Advanced AC fan speed control - TK monitoring
STRA4 fan speed controllers have a digital input, an alarm output and an unregulated output. They control three-phase voltage controllable motors with a maximum current of 14 A. The fan speed is regulated in steps by varying the motor voltage. Their TK monitoring function deactivates the motor in case of overheating. The digital input can be used for remote start-stop commands. After a power failure, the motor will automatically restart. The output voltage with perfect sinusoidal shape, guarantees quiet motor operation. The metal enclosure allows surface mounting in indoor environments (IP54).
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