Two power terminals for the fan
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The fan has two power terminals, one large and one small. The large one is for the fan motor; what is the purpose of the smaller one? Picture: Thank you, extra points
I’m just guessing, but the motor is an inverter-driven motor with a separate fan. Could it be that this control panel is related to that separate fan? Under normal circumstances, the main motor should be operating, as well as the separate fan; however, the indicator light does not turn on, which may be due to an issue with the control panel on some other device.
It’s either an inverter-driven fan, or it’s on the fan itself
It could be the lubrication pump or the electric heater
Motor space heater, electric barring gear……
Control panel for space heating of the motor or for the small fan located behind the motor
Variable-frequency motor fan power supply control panel
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1. This is a small fan with an inverter motor that can be operated independently. 2. This approach is incorrect; the small fan turns on and off along with the main motor, and you do not have the authority to operate it separately