Specials for fans
18Pages

Information Accessories ACmaxx / GreenTech EC-Compact fans Speed signal Alarm signal Vario-Pro / Speed setting / Control input Protection against ambient influences, Protection class IP 54 / IP 68

Technical information Cooling capacity and efficiency Greater power density, increasing miniaturisation and extreme electronic component density are posing increased demands on the cooling capacity and efficiency of fans. The intelligent and space-saving integration of the fan in the device configuration is therefore of major importance: • Tailor-made cooling adapted to the situation as and when required. • Programmable cooling by defining speed profiles. • Transparency of function thanks to complete, interactive monitoring in all operating conditions. Standard fans in electronics cooling...

7. Protection against environmental influences Some applications place particular demands on the fans resistance to ambient influences, such as dust, moisture, water and salt. ebm-papst offer solutions for adapting fans to these ambient conditions. ACmaxx / GreenTech EC-Compact fans 5. Turbo drives Fans with three-phase EC drives and microprocessor-controlled motor electronics. These three-phase motors whose torque is virtually nonreliant on the rotor position are used for extremely high running smoothness. The speed of these fans can be controlled over a very wide range with PWM, analogue...

Signal data Fan description Basic type Condition: Isource Speed signal US High Electrical connection Sensor operating voltage UBS max. Condition: Isink Perm. sink current Isink max. Speed-proportional rectangular pulse for external speed monitoring of fan motor 2, 3 or 6 pulses per revolution Open collector signal output Extremely wide operating voltage range Easy adaptation to user interface Connection via separate lead The sensor signal also serves as a major comparison variable for setting and maintaining the setpoint speed for interactive or controlled cooling with one or several...

Information Condition: Isource Sensor operating voltage UBS max. Perm. sink current Isink max. Speed signal US High ACmaxx / GreenTech EC-Compact fans Note: With these fan options, deviations in regard to temperature range, voltage range and power consumption are possible compared with standard fan data. Condition: Isink Signal data Fan description Basic type Available on request: – Electrically isolated sensor and signal circuit – Varying voltage potentials for power and logic circuit

Speed-proportional rectangular pulse for external speed monitoring of fan motor 2, 3 or 6 pulses per revolution TTL-compatible Integrated pull-up resistor Connection via separate lead The sensor signal also serves as a major comparison variable for setting and maintaining the setpoint speed for interactive or controlled cooling with one or more interconnected fans. Perm. sink current Isink max. Fan description Basic type Signal data All voltages measured to ground. Speed signal US High Condition: Isink Condition: Isource Electrical connection Note: With these fan options, deviations in...

ACmaxx / GreenTech EC-Compact fans Fan description Basic type Note: With these fan options, deviations in regard to temperature range, voltage range and power consumption are possible compared with standard fan data. Perm. sink current Isink max. Signal data Speed signal US High Condition: Isink Condition: Isource Available on request: – Electrically isolated sensor and signal circuit – Varying voltage potentials for power and logic circuit

Alarm delay time t2 Note: With these fan specials, deviations as regards temperature range, voltage range and power consumption are possible compared with standard fans. Electrical connection All voltages measured to ground. External load resistor Ra from UA to UBA required. t 2 = Alarm signal suppression during start-up * n < speed limit nG by braking or locking. Alarm output voltage UA Low Fan description Basic type Max. permissible Sink current Alarm signal data Alarm outputvoltage UA High Condition: Isource – Alarm signal for speed monitoring – Signal output via open collector – The fan...

Note: With these fan specials, deviations as regards temperature range, voltage range and power consumption are possible compared with standard fans. Alarm output voltage UA Low ≤ 0,4 Alarm delay time t2 ACmaxx / GreenTech EC-Compact fans Max. permissible Sink current Fan description Basic type Condition: Isource Alarm outputvoltage UA High Alarm signal data Available on request: – With integrated signal latching for subsequent recognition of short-time faults – Alarm circuit open collector or TTL – Electrically isolated for maximum device safety Defects in the power circuit do not affect...

Alarm delay time t2 Note: With these fan specials, deviations as regards temperature range, voltage range and power consumption are possible compared with standard fans. Available on request: – With integrated signal latching for subsequent recognition of short-term faults. – Alarm circuit open collector or TTL. – Electrically isolated for max. device safety; defects in power circuit have no effect on the alarm circuit. Electrical connection All voltages measured to ground. External load resistor Ra from UA to UBA required. Alarm output voltage UA Low Fan description Basic type Max....

Alarm signal /37 Go / No-go alarm DC axial fans DC centrifugal fans ACmaxx / GreenTech EC-Compact fans Fan description Basic type Alarm delay time t2 Max. permissible Sink current Condition: Isource Alarm outputvoltage UA High Alarm signal data Alarm output voltage UA Low – Alarm signal for speed monitoring – Signal output via open collector – The fan emits a high continuous signal during trouble-free operation within the permissible voltage range. – Low signal when speed limit is not reached – After elimination of fault, the fan returns to its setpoint speed; the alarm signal reverts to...