Simple Brake Control - Siemens SINAMICS S120 Function Manual

Basic functions

6.13 Simple brake control

● p3845 = 0 Friction characteristic curve recording deactivated
● p3845 = 1 Friction characteristic curve recording activated, all directions of rotation
● p3845 = 2 Friction characteristic curve recording activated, positive direction of rotation
● p3845 = 3 Friction characteristic curve recording activated, negative direction of rotation
Commissioning via STARTER
In STARTER, the friction characteristic curve can be started up via the dialog under
"Functions".
6.13 Simple brake control
Features
● Automatic activation by means of sequence control
● Standstill (zero-speed) monitoring
● Forced brake release (p0855, p1215)
● Application of brake for a 1 signal "unconditionally close holding brake" (p0858)
● Application of brake after "Enable speed controller" signal has been canceled (p0856)
Description
The "Simple brake control" is used exclusively for the control of holding brakes. The holding
brake is used to secure drives against unwanted motion when deactivated.
The trigger command for releasing and applying the holding brake is transmitted via DRIVE-
CLiQ from the Control Unit, which monitors and logically connects the signals to the system-
internal processes, directly to the Motor Module.
The Motor Module then performs the action and activates the output for the holding brake.
The exact sequence control is shown in the SINAMICS S120/S150 List Manual (function
diagram 2701). The operating principle of the holding brake can be configured via parameter
p1215.
224
The friction characteristic curve is recorded in both directions of rotation. The results of
the positive and negative measurement are averaged and entered in p383x.
DANGER
When the friction characteristic is plotted, the drive can cause the motor to move. As a
result, the motor may reach maximum speed.
The emergency OFF functions must be fully operational during commissioning. To
protect the machines and personnel, the relevant safety regulations must be observed.
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions