Datasheet

3.1.8 Axial fans
SEPA EUROPE GmbH • D-79108 Freiburg • Tel.: [phone] • Fax: [phone]
x
x
ALARM SIGNAL (Optional)
The SEPA
®
MFB30GxxA includes a pulse output, which allows monitoring the correct function of the fan.
An alarm-board is available on request.
The pulse is like a rectangular wave, the frequency correlates to 2 x rotor speed. The amplitude is U
FAN
-
1V and appears periodically. At blocked rotor the output signal could be L (d0.3V) or H (U
FAN
).
IMPORTANT: The pulse output is not protected against short circuit and must not connect to GND or
Vcc without pre-resistor. A pull-up-resistor is not needed.
Do not connect not used pulse output (insulate).
Do not touch the rotor!
The MFB30Gxxx has tinned lead wire ends (without connector).
+
-
blk
yel
red
-
+
FAN
ALARM-CIRCUIT
T
1n
OUTPUT WAVEFORM
Moved: L=0.3Vmax; H=U
FAN
; Stop: H or L
T
(5V)
=3.5msec T
(12V)
=3.3msec
MFB30GxxA
(U
H
~U
FAN
, Ic<5mA)
x ACCESSORIES:
Connector: on request
x ORDER INFORMATION:
MFB30G05 SEPA
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MFB30G12 SEPA
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MFB30G12A SEPA
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