ebm-papst DiaForce 120 standard

General:

• Fan type: Mixed-flow fan
• Rotating direction looking at rotor: Clockwise
• Airflow direction: Air outlet over struts
• Bearing system: Ball bearing
• Mounting position - shaft: Any

Features 

• Tacho operating voltage U_BS <= 30V
• Tacho signal low U_{S low} I sink: 2mA <= 1V + I_sink x R_s 
• Resistor R_S 180Ohm
• Tacho signal high U_{S high} I source: 0mA <= 30V
• Maximum sink current I_sink <= 4mA
• External resistor External resistor Ra from UBS to US required. All voltages measured to GND
• Tacho frequency (2 x n) / 60  666Hz @ 20.000 1/min
• Tacho isolated from motor No
• Slew rate >= 0,5V/us

Applications

• The product is for the use in sheltered rooms with limited controlled temperature. Occasionally condensed water is allowed. Direct exposure to water must be avoided. Saline ambient conditions must be avoided.
• Pollution degree 2 (according DIN EN 60664-1) It occurs only non-conductive pollution. Occassionally, temporary conductivity caused by condensation occurs.