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L300P Inverter
Motor Control
Accessories
5–7
L300P
Dynamic Braking
Selection Tables
The L300P Series 200V and 400V class inverter models in the 2 to 20 hp range have internal
braking units. Additional stopping torque is available by adding external resistors. The required
braking torque depends on your particular application. Other tables in this section will help you
choose the proper resistor.
2 to 20 hp (1.5 to 15 kW)
Using
Internal Resistor
Using Optional
External Resistor
Performance @
Minimum Resistance
Minimum
Resistance
@ 100%
Braking
Duty
Cycle,
Ohms
Voltage
Class
Model Number,
L300P
Motor
hp
Braking
Unit
Braking
Torque
@ 60Hz,
(without
external
resistor),
%
External
Resistance,
Ohms
Braking
Torque
@60Hz,
%
Minimum
Resistance,
Ohms
Max.
Braking
Duty
Cycle,
%
200V
–015LFU2 2 Built-in 50 35 200 35 10 100
–022LFU2 3 Built-in 20 35 160 35 10 100
–037LFU2 5 Built-in 20 35 100 35 10 100
–055LFU2 7.5 Built-in 20 17 80 17 10 50
–075LFU2 10 Built-in 20 17 80 17 10 50
–110LFU2 15 Built-in 10 17 55 17 10 50
–150LFU2 20 Built-in 10 17 50 17 10 50
400V
–015HFU2, HFE2 2 Built-in 50 100 200 100 10 300
–022HFU2, HFE2 3 Built-in 20 100 200 100 10 300
–037HFU2, HFE2 5 Built-in 20 100 140 70 10 200
–055HFU2, HFE2 7.5 Built-in 20 70 100 70 10 200
–075HFU2, HFE2 10 Built-in 20 70 100 50 10 150
–110HFU2, HFE2 15 Built-in 10 70 55 50 10 150
–150HFU2, HFE2 20 Built-in 10 70 50 50 10 150