Axial fans

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Speed setting with EC motors The speed of EC motors is set via commutation electronics. Via electronic circuits and depending on the rotor position, this commutation switches the motor currents on and off. Principle of AC-fed commutation electronics Principle of DC-fed commutation electronics Interface Control unit Power unit Interface Control unit Power unit 0-10 VDC PWM DC/DC transformer EMC filter Rectifier 0-10 VDC PWM Commutations unit EMC filter Feedback Commutations unit Link electrolytic capacitor Feedback CAN LON Drive Inverter stage CAN LON Drive Inverter stage RS485 RS485 (with electrically isolated interface) Integrated commutation electronics – Compact unit – Easy to install – Low installation expenditure – Can be operated all over the world Note: Motors with 12-72 VDC supply voltage have to be fed via electrically isolated supply unit. AC DC Integrated commutation electronics with switch power supply – Protective extra-low voltage 24 / 48 VDC Note: Switch power supply is not included but has to be ordered as accessory. AC DC 418
AC axial A series EC axial <strong>fans</strong> EC axial S series Q-motor ESM EC-SYSTEMS Technology Accessories AC axial K series AC axial S series AC axial <strong>fans</strong> General information Typical features of the ebm-papst commutation electronics: – Input for analogue and digital signals – Open and closed loop control as well as monitoring of the motor – Integrated EMC filter – High efficiency throughout the entire speed range – Speed setting via linear set value (0-10 VDC) or PWM signal – Low-noise operation across the entire speed range – Minimal extra costs for additional functions (open/closed loop control) – Optional BUS interface Types of alarms and reactions with EC motors With DC-fed EC motors, certain faults in modes of operation are recognised by the electronics, and the motor is automatically restarted. With AC-fed EC motors, certain faults in modes of operation are recognised by the electronics, and the motor is switched off. The motor restarts automatically after the following failures have been diagnosed: – Line failure – Phase failure – Line under-voltage – DC link voltage too high or too low – Locked rotor With the following types of failures, there is no automatic restart. Here, hardware or software reset is required: – Motor temperature too high – Temperature of cooling element or ambient temperature of electronics too high – Hall failure Hardware reset Switching off the fan and restarting it after one minute results in hardware reset. Software reset Software reset is via ebmBUS and LISA software, hand-held control terminal, or PDA with Fan Control Software. 419 Contacts
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Axial fans version 07 The engineer
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AC axial S series AC axial fans Gen
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EC axial fans AC axial A series AC
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- Motor protection: A C Without TOP
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EC axial fans mains-powered S serie
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Square shaded-pole motors (Q-motors
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M4 Square shaded-pole motors Frigo
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Temperature control module AC axial
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Interface converter RS232 - RS485 G
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