Elektrically Braking The Motor; Dc Braking - Siemens Sinamics G110M Operating Instructions Manual

Advanced commissioning

6.18 Elektrically braking the motor

Parameter
p1300
p0300 ...
p0360
p1511
p1520
p1521
p1530
p1531
Additional information about this function is provided in the parameter list and in function
diagrams 6030 onwards in the List Manual.
6.18 Elektrically braking the motor
A differentiation is made between mechanically braking and electrically braking a motor:
● Mechanical brakes are generally motor holding brakes that are closed when the motor is
at a standstill. Mechanical operating brakes, that are closed while the motor is rotating
are subject to a high wear and are therefore often only used as an emergency brake.
If your motor is equipped with a motor holding brake, then you should use the inverter
functions to control this motor holding brake, see Section Motor holding brake
(Page 185).
● The motor is electrically braked by the inverter. An electrical braking is completely wear-
free. Generally, a motor is switched off at standstill in order to save energy and so that
the motor temperature is not unnecessarily increased.
Braking with the motor in generating mode
If the motor brakes the connected load electrically, it will convert the kinetic energy of the
motor to electrical energy. The electrical energy E released on braking the load is
proportional to the moment of inertia J of the motor and load and to the square of the speed
n. The motor attempts to pass the energy on to the inverter.
6.18.1

DC braking

DC braking is used for applications where the motor must be actively stopped; however,
neither an inverter capable of energy recovery nor a braking resistor is available.
Typical applications for DC braking include:
● Centrifuges
● Saws
254
Description
Control mode:
22: Torque control without speed encoder
Motor data is transferred from the motor type plate during quick commissioning and
calculated with the motor data identification
Additional torque
Upper torque limit
Lower torque limit
Motoring power limit
Regenerative power limit
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 09/2017, FW V4.7.9, A5E31298649B AH