1 DA1 device series
1.7 Selection criteria
DA1 Variable Frequency Drives
08/18 MN04020005Z-EN
www.eaton.com
33
1.7 Selection criteria
Select the variable frequency drive according to the supply voltage U
LN
of the
supply system and the rated operational current of the rated motor.
The circuit type (
Δ
/
) of the motor must be selected according to the supply
voltage.
Thevariable frequency drive’s rated output current I
e
must be greater than or
equal to the rated motor current.
Figure 22: Selection criteria – Rating plate data
When selecting the drive, the following criteria must be known:
•
Mains voltage = motor supply voltage (e. g. 3~ 400 V),
•
Type and characteristics of motor (e. g., three-phase asynchronous
motor),
•
The rated motor current (recommended value – depends on the motor’s
configuration and on the power supply),
•
Ambient conditions: ambient temperature, control cabinet installation
with IP20 protection or direct local installation with IP66 protection.
Example based on figure 22
•
Mains voltage: 3~ 400 V, 50 Hz
•
Star connection (400 V)
•
Rated Current: 1.9 A (400 V)
•
Control panel installation
→
IP20 protection
•
Max. ambient temperature 50 °C without derating, IP20
￫
variable frequency drive to be selected: DA1-342D2FB-B20C
•
DA1-
34
…: 3-phase mains terminal, rated operating voltage: 400 V
•
DA1-…
2D2
…: 2.2 A – The variable frequency drive’s rated operational
current (output current) guarantees that the motor will be supplied with
the required rated operational current (1.9 A).
L1/L L2/N L3
DC-
U
DC+ BR
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18
COM
V
W
P1-07
P1-08
P1-10
P1-09
P4-05
1410 min
-1
230/400 V
3.2/1.9 A
50 Hz
0,75 KW
cos ϕ 0.79
