Axial fans

AC axial
S series
AC axial fans
General
information
Speed setting with AC motors
AC axial
K series
Speed setting helps to optimise power input
and the flow noise as requested.
When selecting a voltage controller, note that the nominal current in the
partial load range can be up to 20 % (depending on the controller) above
the specified maximum current.
AC axial
A series
Series resistance
L1
N
0
1
2
3
R1
R2
C
AW
ASM
1~
MW
– Fixed speed steps
– Speed setting via change in motor voltage
– Cost-efficient
– Small capacities
Note: Capacitors or chokes reduce the loss capacity.
EC axial fans
PE
L1
Tr
4
3
2
C
AW
ASM
1~
Transformer
– Fixed speed steps
– Speed setting via change in motor voltage
EC axial
S series
1
N
MW
Q-motor
PE
Phase-angle control
L1
N
PE
Tr
C
AW
ASM
1~
MW
– Continuous speed setting
– Speed setting via change in motor voltage
– Cost-efficient
– Acoustic performance and warming has to be reviewed
in the application
EC-SYSTEMS ESM
Frequency inverter with sine filter
L1
L2
L3
T1 T3 T5
U
+
V
W
T2 T4 T6
V
ASM
3~
U
W
Accessories
Technology
– Continuous speed setting
– Speed setting via change in frequency of rotating field
– High efficiency
Note: An all-pole sine filter (phase-phase and phase-earth)
has to be used.
PE
415
Contacts