Braking resistors Siemens

Обзор



Braking resistor

Excess energy in the DC link is dissipated in the braking resistor. The braking resistors are intended for use with PM240 Power Modules which feature an integrated braking chopper, but cannot regenerate energy to the supply system. For regenerative operation, e.g. the braking of a rotating mass with high moment of inertia, a braking resistor must be connected to convert the resulting energy into heat.

The braking resistors can be installed at the side next to the PM240 Power Modules.

The braking resistors for the Power Modules of frame size FSF should be placed outside the control cabinet or outside the switchgear room so that the heat loss is removed from the area of the Power Modules. The level of air conditioning required is therefore reduced.

Every braking resistor has a temperature switch (UL-listed). The temperature switch must be evaluated to prevent consequential damage if the braking resistor overheats.

Интеграция



Available optional braking resistors

 

Frame size

 

FSF

PM240 Power Module with integrated braking chopper

DC link components

Braking resistor

S



S = Lateral mounting

Технические данные



Line voltage 380 V ... 480 V 3 AC

Braking resistor

 

6SE6400-4BD24-0FA0

6SE6400-4BD26-0FA0

Resistance

Ω 

8.2

5.5

Rated power PDB

(continuous breaking power)

kW (hp)

4

5.6

Peak power Pmax

(load duration ta = 12 s for cycle time t 12 s)

kW (hp)

80

120

Power connections

 

M6 screw studs

M6 screw studs

Thermostatic switch

 

NC contact

NC contact

  • Contact load, max.

 

250 V AC/2.5 A

250 V AC/2.5 A

Degree of protection

 

IP20

IP20

Frame size

 

FSF

FSF

Dimensions

 

 

 

  • Width

mm (in)

395

526

  • Height

mm (in)

650

301

  • Depth

mm (in)

315

484

Weight, approx.

kg (lb)

16.7

17.5

Suitable for
PM240 Power Module

Type

6SL3224-0BE37-5UA0
6SL3224-0BE37-5AA0

6SL3224-0BE38-8UA0
6SL3224-0BE41-1UA0

  • Frame size

 

FSF

FSF