Siemens sinamics G120 Operating Instructions Manual page 279

Low voltage inverters chassis devices with cu250s-2 control units and encoder evaluation

Hide thumbs Also See for sinamics G120:

Table of Contents

Set dynamic braking

Converter with CU250S-2 Control Unit

Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE

Braking power of the braking resistor (factory setting: 0 kW)

Set the braking power of the braking resistor.

Example: In your particular application, the motor brakes every 10 seconds. In so doing,

the braking resistor must handle a braking power of 1 kW for 2 s. Use a braking resistor

with a continuous rating of 1 kW × 2 s / 10 s = 0.2 kW, and set the maximum braking

power to: p0219 = 1 (kW).

Under certain circumstances, for low braking power ratings, the inverter extends the

ramp-down time of the motor.

For p0219 > 0, the inverter deactivates the VDC_max controller.

No coast down/coast down (OFF2) signal source 1

p0844 = 722.x

Monitor the overtemperature of the braking resistor with digital input x

of the inverter.

Advanced commissioning

6.7 Application-specific functions