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SJ300 Inverter
Motor Control
Accessories
5–7
SJ300
Dynamic Braking
Selection Tables
The SJ300 Series 200V and 400V class inverter models in the 1/2 to 15 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.
1/2 to 15 hp (0.4 to 11 kW)
Without
External Resistor
Using Optional
External Resistor
Performance @
Minimum Resistance
Minimum
Resistance
@ 100%
Braking
Duty
Cycle,
Ohms
Voltage
Class
Model Number
Motor
hp
Braking
Unit
Braking
Torque
@ 60Hz,
%
External
Resistance,
Ohms
Braking
Torque
@60Hz,
%
Minimum
Resistance,
Ohms
Max.
Braking
Duty
Cycle,
%
200V
SJ300–004LFU 1/2 Built-in 50 50 200 50 10 150
SJ300–007LFU 1 Built-in 50 50 200 50 10 150
SJ300–015LFU 2 Built-in 50 35 200 35 10 100
SJ300–022LFU 3 Built-in 20 35 160 35 10 100
SJ300–037LFU 5 Built-in 20 35 100 35 10 100
SJ300–055LFU 7.5 Built-in 20 17 80 17 10 50
SJ300–075LFU 10 Built-in 20 17 80 17 10 50
SJ300–110LFU 15 Built-in 10 17 70 17 10 50
400V
SJ300–007HFU/E 1 Built-in 50 100 200 100 10 300
SJ300–015HFU/E 2 Built-in 50 100 200 100 10 300
SJ300–022HFU/E 3 Built-in 20 100 200 100 10 300
SJ300–040HFU/E 5 Built-in 20 100 140 70 10 200
SJ300–055HFU/E 7.5 Built-in 20 70 100 70 10 200
SJ300–075HFU/E 10 Built-in 20 70 100 50 10 150
SJ300–110HFU/E 15 Built-in 10 70 70 50 10 150