Configuring Brake Control - Siemens SINAMICS S120 Commissioning Manual

Commissioning

5.10 Configuring brake control

5.10 Configuring brake control
Overview
The SINAMICS S120 drives are equipped with a brake control for motor holding brakes. The brake
control is only used for the control of motor holding brakes.
Generally, a motor is switched off at standstill in order to save energy and so that the motor
temperature is not unnecessarily increased. Drives that have been switched off, can be secured
against unwanted motion by the holding brake.
The motor holding brake control in the inverter is suitable typically for horizontal, inclined and
vertical conveyors. A motor holding brake can also be useful in several applications for pumps
or fans to ensure that the switched-off motor does not rotate in the wrong direction due to a
liquid or air flow.
Danger as a result of a damaged holding brake caused by incorrect parameter assignment
If the drive moves against the closed holding brake, this can destroy the holding brake and as
a consequence result in death or severe injury.
• Do not set the parameter assignment p1215 = 0 when there is a holding brake.
• Set all the relevant parameters correctly.
Brake types
A differentiation is generally made between mechanically braking and electrically braking a
motor.
Mechanical braking
• Motor holding brakes
Mechanical brakes which are closed while the motor is at a standstill.
• Service brakes
Mechanical 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.
Electrical braking
• The motor is electrically braked by the converter. An electrical braking is completely wear-
free.
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WARNING
Commissioning with Startdrive
Commissioning Manual, 06/2020, 6SL3097-5AA10-0BP2