| | | • ALARM SIGNAL (Optional) The SEPA® MFB50xxxA include a pulse output, which allows monitoring the correct function of the fan. An alarm-board is available on request. MFB50A05A: The pulse is like a rectangular wave, the frequency correlates to 3 x rotor speed. At blocked rotor the output signal could be L (<1,0V) or H (4.0V). A pull-up-resistor is not needed (push-pull). MFB50C12A: The pulse is like a rectangular wave, the frequency correlates to 2 x rotor speed. At blocked rotor the output signal could be L (<0.3V) or H (12V). A pull-up-resistor is needed. IMPORTANT: The pulse output is not protected against short circuit and must not connect to GND or Vcc without pre-resistor. Do not connect not used pulse output (insulate). Do not touch the rotor! | | |
| | | MFB50A05 SEPA fan 50x50x10mm, 5VDC, ball bearing, CE 515011000 MFB50A12 SEPA fan 50x50x10mm, 12VDC, ball bearing, CE 515012000 MFB50A12MOL SEPA fan 50x50x10mm, 12VDC, ball bearing, CE with connector MOLEX 5051-03 or equiv. 515012001 MFB50C12A SEPA fan 50x50x10mm, 12VDC, pulse, ball bearing, CE 515032010 MFB50C12AMOL SEPA fan 50x50x10mm, 12VDC, pulse, ball bearing, CE with connector MOLEX 5051-03 or equiv. 515032011 SEPA® is the brand name for industrial fans and CPU-Cooler, made by Nippon Keiki Works LTD., Tokyo | | |