Datasheet

4.1.2 Radial fans
ALARM OUTPUT
The SEPA
®
HYB35D05A 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 frequency correlates to 3 x rotor speed. At blocked rotor the
output signal could be L (d0.6V) or H (Vcc -1V).
IMPORTANT: The pulse output is not protected against short circuit and must not connect to GND or
Vcc without series-resistor. A pull-up-resistor is not needed.
Do not connect not used pulse output to GND or Vcc (insolate).
The HYB35D05(A) has tinned lead wire ends (without connector).
+
-
blk
yel
red
-
+
(5mA
max
)
CPU-COOLER
ALARM
-CIRCUIT
T
1n
OUTPUT
WAVEFORM
Run: L=0.6Vmax; H=Vcc-1V;
T=3.2msec
Stop: H or L
HYB35D05(A)
IMPORTANT: Only hold the fan at the outer edge and do not touch the impeller!
x Accessories:
CONNECTOR on request
x Order Information:
HYB35D05 SEPA turbo fan 5VDC, ball bearing, CE 213541000
HYB35D05A SEPA turbo fan 5VDC, ball bearing, pulse, CE 213541010
SEPA EUROPE GmbH • D-79108 Freiburg • Tel.: [phone] • Fax: [phone]