Schneider Electric 17S Series User Manual

127

Example Regen Resistor Power Dissipation Calculation, continued

Identify each deceleration of the plot where the drive is decelerating the load.

Calculate the energy returned to the drive in each deceleration as follows:

Deceleration 1

ω

 = 2 

π

 3000RPM / 60 = 314 radians/sec

E = ½ 0.01kgm

2 

(314 radians/sec)

 2

 = 493 joules

Deceleration 2

ω

 = 2 

π

 600RPM / 60 = 63 radians/sec

E = ½ 0.01kgm

2 

(63 radians/sec)

 2

 = 20 joules

Deceleration 3

ω

 = 2 

π

 3450RPM / 60 = 361 radians/sec

E = ½ 0.01kgm

2 

(361 radians/sec)

 2

 = 652 joules

Continued on next page