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Optidrive E3 Set-up Guide
16
Dynamic Braking
Optidrive E3 minimum and recommended braking resistor values
Part number
Drive kW
rating
Minimum braking
resistor value (Ω)
Recommended braking
resistor value (Ω)
Approx. braking power with
recommended resistor (kW)
ODE-3-210105-1F42-01
0.55
25
50
0.7
ODE-3-220105-1F42-01
1.1
25
100
1.5
ODE-3-210058-1042
1.1
25
100
1.5
ODE-3-220070-1F42
1.5
25
75
2
ODE-3-220105-1F42
2.2
25
50
3
ODE-3-320153-1042
4
25
25
6
ODE-3-240041-3F42
1.5
75
250
2.4
ODE-3-240058-3F42
2.2
75
200
3
ODE-3-240095-3F42
4
75
100
6
ODE-3-340140-3F42
5.5
25
75
8
ODE-3-340180-3F42
7.5
25
50
12
ODE-3-340240-3F42
11
25
40
15
ODE-3-440300-3F42
15
30
30
20
ODE-3-440390-3F42
18.5
22
22
27.5
ODE-3-440460-3F42
22
22
22
27.5
ODE-3-540610-3F42
30
12
15
40.5
ODE-3-440720-3F42
37
12
12
50.7
The recommended braking resistor will allow the drive to produce 150% braking torque although in most
applications, this level of braking torque is not required.
The power rating of the resistor depends on the application and the average braking power to be dissipated. If
the application is a small inertia which stops once a day, the braking resistor power rating can be small when
compared to a large inertia which is stopped 20 times a day.
Usually a worse case resistor size for arduous applications is ‘drive kW rating X 40%’ so for a 2.2kW drive, a
1kW resistor should satisfy most applications.
Below is an example circuit of how to connect the braking resistor thermal protection so that it removes
power from the inverter in the event of a resistor overload.