Datasheet

• ALARM SIGNAL (Option ...A)
The SEPA
®
MFB40H12XA includes a speed impulse output, which enables monitoring the correct
function of the fan. An alarm-board is available on request.
The pulse is like a rectangular wave. The pulse frequency correlates to 2 x rotor speed, OC-output, a pull-
up-resistor is needed. At blocked rotor the output signal could be L (≤0.5V) or H (Vcc).
IMPORTANT: The pulse output is not protected against short circuit and must not connect to GND or
Vcc without series-resistor. Do not connect not used pulse output to GND or Vcc (insolate).
+
-
bl
k
yel
red
-
+
FAN
T
1n
OUTPUT WAVEFORM
Run: L=0.5Vmax; H=Vcc;
T
(12LA)
=7.5msec, T
(12A)
=4.9msec, Stop=H
/
L
MFB40H12xA
ALARM CIRCUIT
(Vce<15V, Ic<5mA)
• ACCESSORIES:
ALG01 SEPA ALARM, monitor-circuit, generates an acoustic signal in case of missing pulses.
VARP01 Speed control via temperature (BPKZ1019)
Connector On request
IMPORTANT: Do not touch the rotor!
• ELECTRICAL PROTECTION:
The MFB40H12xA is permanent protected against false pole of power supply and blocking rotor.
• ORDER INFORMATION:
MFB40H12L SEPA fan, Ball Bearing, CE (on request)
MFB40H12LA SEPA fan, Ball Bearing, CE (on request)
MFB40H12 SEPA fan, Ball Bearing, CE (Standard model) BPKL1053
MFB40H12A SEPA fan, Ball Bearing, CE (Standard model) BPKL1054
07/04 Technical changes without notice
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www.DeltaCar-PC.de www.delta-components.de E-mail: [e-mail]