Inverter Leroy Somer

Input power supply

3-phase supply : 200 to 240V ± 10 % (TL)
                                  380V to 480V ± 10 % (T)

Input frequency

48Hz to 62Hz

Phase imbalance at input

≤ 3 %

Output voltage

From 0V to supply voltage

Maximum number of power-ups per hour

20

CHARACTERISTIC

UMV 4301

1.5T to 16T - 1TL to 8TL

UMV 4301

22T to 50T - 11TL to 33TL

UMV 4301

60T to 120T

Regulation mode

• Vector control, open loop

• Vector control, closed loop

• Voltage/frequency ratio (V/F)

• Servomotor

Regulation

• Speed reference

• Torque reference (regulation of motor current)

Constant torque

Constant power

Adjusted by basic frequency

Switching frequency

3 - 4.5 - 6 - 9 and 12 kHz

Depending on the rating, derating according to the switching frequency or automatic adjustment of the switching frequency according to the load

Overload capacity

• 150 % of controller rated current for 60s

• 175 % of controller rated current for 4s (in servomotor mode)

Braking

• Hypersynchronous. Controller alone or with RF options

• By DC injection

Speed feedback for closed loop operation

• By incremental encoder (2 complementary channels + 0 marker)

• By incremental encoder (2 complementary channels + 0 marker + 3 complem. channels per phase U, V, W) in servomotor mode

• By resolver + RLV UMV option card in servomotor mode

CONTROL

Control logic

• Negative      {   high level     > + 15V

• Positive                  low level      < +  5V

Speed references

• Analogue :

- differential voltage ± 10V (input impedance : 100 KΩ)

- voltage 0/± 10V in common mode (input impedance : 100 KΩ)

- current 0-20mA, 4-20mA or 20-0mA, 20-4mA

• Digital :

- from keypad

- by jogging

Torque reference

• Analogue :

- voltage 0/± 10V in common mode (input impedance : 100 KΩ)

- current 0-20mA, 4-20mA or 20-0mA, 20-4mA (input impedance : 100 Ω)

• Digital :

- from keypad by incrementation

Speed regulation

Adjustment by programming the " proportional " and " integral " and " derivative " coefficients of the speed loop

Forward/reverse control

• By inversion of the reference polarity

• By logic input

• From the operator console

Self-adaptation of the controller to the motor

Measurement of the motor characteristics (cos ϕ, magnetizing current and stator resistance)

and the encoder feedback.

OPERATION

Acceleration / deceleration ramps

Separate settings from 0 to 3200s. Linear or " S " curve. The radius of the " S " ramp can be adjusted.

Minimum/maximum speed limit

Speed variation between two stops.

Stopping mode

• Freewheel stop : by logic input (terminal 30) immediate cut-off of motor power supply.

• Stop on ramp (following different modes).

• DC injection braking stop.

• Orientation stop in specific position (closed loop).

Dynamic V/F selection

Automatic adaptation of the V/F curve to the motor load in V/F mode.

Flying restart

Ability of the controller to start while the motor is running.