ebm-papst DiaForce 120 standard

Input voltage divider:

• R1 = 65kOhm
  R2 = 22kOhm
•  

Speed control:

• By pulse-width modulation (PWM) 0 ... 100%
• with switching transistor in emitter circuit and collector resistor to 12V
• Frequency = 2kHz (from 1kHz to 10kHz)

Information to the curve PWM:

• 0% - <8% PWM: 0 1/min
• 8% PWM: 2.000 1/min (Fan on, coming from 0% PWM)
• 8% - 13% PWM: 2.000 1/min (corresponding to min. speed)
• 13% - 80% PWM: linear increasing curve
• 80% - 100% PWM: 17.200 1/min (corresponding to max. speed)

Features 

• Tacho operating voltage UBS <= 60V
• Tacho signal Low US low I sink: 20mA <= 0,4V
• Tacho signal High US high I source: 0mA <=60V
• External resistor External resistor Ra from UBS to US required. All voltages measured to GND
• Tacho frequency (2 x n) / 60 573Hz @ 17.200 1/min

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.