3212J/2N-301
DC Axial Fan
38mm axial fan with extremely pressure
resistant performance curve. Designed for
dense and demanding electronics cooling.
Drive electronics is completely integrated
into the fan. Fan speed and noise can be
changed by varying the supply voltage.
Features
General Data
Voltage range
V DC
V DC
min
-1
m
3
/h
CFM
dB(A)
mA
W
°C
h
h
7 … 13,8
12
6000
130
76,5
51
630
7,5
-20 ... +70
35.000
70.000
UL, CSA, VDE
PBTP / PA 6.6
Ball bearings
kg
0,240
Subject to change without notice
•
•
•
•
Electronic locked rotor protection,
overload protection is integrated into
the fan circuit.
Electronic reverse polarity protection.
Fan starts only with correct polarity.
Electrical connection via 2 leads
AWG24, 310mm long.
Open collector tacho signal
Nominal voltage
Nominal speed
Max. flow rate
Max. flow rate
Noise free air
Current consumption
Power consumption
Permanent ambient temperature
at max. voltage
Service life (70 °C)
Service life (40 °C)
Approvals
Fan housing / impeller
Bearing system
Mass
All data are mean values at nominal conditions.
Patents granted or applied for.
ebm-papst St.Georgen GmbH & Co KG,
Postfach 1435, D-78106 St. Georgen
3212J_2N_301.DOC
21.07.2006
Speed sensor "/2"
U
s
U
s high
t
1
U
s low
1 Revolution
t
2
U (+)
I
Source
I
Sink
U
s
U
bs
GND
R
a
U (+)
Us
Ubs
GND
Ra
Supply Voltage
Speed Signal
Sensor Supply Voltage
Ground (-)
External Pull-Up Resistor
R
a
=
U
bs
-
U
slow
I
sin
k
Output
U
bs
U
s high
U
s low
I
sink max
t
1
/ t
2
2 pulses per revolution
4...30 V DC
4...30 V DC at I
source
= 0 mA
<= 0,4 V DC at I
sink
=
2 mA
=
4 mA
0,8 - 1,2
ebm-papst St.Georgen GmbH & Co KG,
Postfach 1435, D-78106 St. Georgen
3212J_2N_301.DOC
21.07.2006