Fandis: Gesamtkatalog 2017

140 ■ Fandis Frame Fans Introduction DC fans with signal lead DC fans with alarm signal It is used to detect if the fan is still rotating or stopped. The output is via a third lead wire (open collector type) and it is a continuous high or low signal depending on the fan's type. DC fans with speed sensor signal The integrated electronic sensor provides a square wave signal proportional to the fan speed. The signal is via a third lead wire (open collector type). External signal function design is decided by customer. Electrical diagram FAN GND V Q1 Vo Ic Locked Signal CUSTOMER’S CIRCUIT FAN GND V Q1 Vo Ic Locked Signal CUSTOMER’S CIRCUIT LOCK LOCK RELEASE Supply voltage Fan rotation Fan current Locked signal T 10 SEC IF LOCKED MAYBE HIGH OR LOW V OH V OL T Output Waveform Speed Control FAN GND V Q1 Vo Ic Locked Signal CUSTOMER’S CIRCUIT LOCK LOCK RELEASE Supply voltage Fan rotation Fan current Locked signal T 10 SEC V OH V OL T Output Waveform Alarm Signal Supply voltage Fan rotation Locked signal Fan current The ouput waves may change depending on the fan type. For more information, contact our Sales Dept.