User manual

1 DC1 device series

1.7 Selection criteria

DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com 27

1.7 Selection criteria

Select the variable frequency drive according to the supply voltage U

the supply system and the rated operational current of the assigned motor.

The circuit type ( / ) of the motor must be selected according to the

supply voltage.

The variable frequency drive’s rated output current I

must be greater than or

equal to the rated motor current.

Figure 12: Selection criteria

When selecting the drive, the following criteria must be known:

• Mains voltage = rated operating voltage of the motor (e. g. 3~ 400 V),

• Type of motor (e.g., three-phase asynchronous motor)

• Rated motor current (recommended value, dependent on the circuit type

and the power supply)

• Ambient conditions: ambient temperature, control cabinet installation

with IP20 degree of protection or direct local installation with IP66

degree of protection.

Example based on figure 12

• Mains voltage: 3~ 400 V, 50 Hz

• Star-connected circuit (400 V)

• Rated operational current: 1.9 A (400 V)

• Control panel installation

 IP20 degree of protection

• Ambient air temperature max. 50 °C without output reduction, IP20

 Variable frequency drive that should be selected: DC1-342D2FN-A20N

• DC1-34…: 3-phase main terminal, rated operating voltage: 400 V

• DC1-…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).

1410 min

230/400 V 3.2/1.9 A

50 Hz

-1

0,75 KW

cos ϕ 0.79

P-07

P-08

P-10

P-09

L1/L

L2/N

