Variable speed control - separate ON-OFF switch - TK monitoring
ITRS9 series are electronic fan speed controllers. They control single-phase voltage controllable motors with a maximum current of 10 A. The fan speed is regulated by varying the motor voltage via phase angle control - Triac technology. The minimum and maximum speed is adjustable via internal trimmers. There are two start-up modes - kick start and soft start. The motor can be enabled via the integrated ON-OFF switch or via the digital input. The TK monitoring function deactivates the motor in case of overheating. Thealarm output indicates motor problems.
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