SIEMENS
5/102
Siemens NC 62 · 2016
5
SINAMICS S120 drive system
Blocksize format – DC link components
Braking resistors
■
Overview
Braking resistor for blocksize format, frame sizes FSA and FSC
PM340 Power Modules cannot regenerate into the line supply.
For regenerative operation, e.g. the braking of a rotating mass,
a braking resistor must be connected to convert the resulting
energy into heat.
The braking resistor is connected at terminals DCP/R1 and R2.
The braking resistors can be installed at the side next to the
PM340 Power Modules. The braking resistors for the FSA and
FSB frame sizes are designed as base components. If the
PM340 Power Modules of the FSA or FSB frame size are
operated without line reactor, the braking resistors can also
be installed under the Power Modules.
The braking resistors for the Power Modules of the FSC to FSF
frame sizes should be placed outside the control cabinet or the
switchgear room in order to lead the resulting heat loss away
from the Power Modules. This reduces the level of air condition-
ing required.
The braking resistors are designed with a temperature switch.
The temperature switch must be evaluated to prevent conse-
quential damage if the braking resistor overheats.
■
Technical specifications
DC link voltage
240 … 360 V DC
Braking resistor
6SE6400-4BC05-0AA0
Resistance
180
Ω
Rated power
P
DB
0.05 kW
Peak power
P
max
1 kW
Degree of protection
1)
IP20
Power connections
3 × 1.5 mm
2
(shielded)
• Length
0.5 m (19.69 in)
Thermostatic switch
(NC contact)
• Switching capacity
250 V AC/max. 2.5 A
• Conductor cross-section
0.5 … 2.5 mm
2
Dimensions
• Width
72 mm (2.83 in)
• Height
230 mm (9.06 in)
• Depth
43.5 mm (1.71 in)
Net weight
1 kg (2.21 lb)
Certificate of suitability
cURus
Suitable for
Power Module in
blocksize format
Frame size FSA
1)
With correctly connected load connection cable.
© Siemens AG 2016