SIEMENS
SINAMICS G150 NEMA
Engineering information
4
Siemens D11.7
(Part 1) – 2013
Safe Brake Control (SBC)
Function description
The Safe Brake Control SBC is used to control holding brakes,
which are active in the no-current state, e.g. motor holding
brakes (actuated using spring force). The brake is controlled
through two channels in a safety-relevant fashion.
Safe Brake Control is executed when activating the
operational brake control, Safe Torque Off function and
when safety monitoring functions respond, which cause
the power unit to be safely inhibited.
• Note 1: The Safe Brake Control does not detect mechanical
faults in the brake, for example worn brake pads.
• Note 2: For Motor Modules, Booksize Cabinet Kits format,
the terminals for the motor brake are integrated. For the
chassis format, an additional Safe Brake Adapter (SBA) is
required (option
K88
for a description see pg. 6/37).
Application, customer benefits
In conjunction with STO and SS1, SBC can also be activated.
After switching off the torque-generating energy, SBC
offers the possibility to safely control a holding brake at the
motor; for example, to prevent hanging/suspended axes
from sagging.
Safe Stop 1 (SS1, time-controlled, without encoder;
Basic Safety Function)
Function description
The Safe Stop 1 function can safely stop the drive in
accordance with IEC 60204-1, Stop Category 1. When the
SS1 function is selected, the drive independently brakes
along a quick stop ramp (OFF3) and Safe Torque Off and
Safe Brake Control (if enabled) are activated when the
selected safety delay time has expired.
Application, cust omer benefits
When activating the stop function, if the drive train does
not come quickly enough to a standstill as a result of the
load torque, then it can be actively braked by the drive. As
a result of this integrated fast brake function, frequently it
is possible to eliminate mechanical brakes which wear, or
to reduce the load on them. This means that maintenance
costs and stress on the machine can be reduced.
Safe Stop 1 (SS1, time and acceleration controlled,
with encoders; Extended Safety Function)
Function description
The Safe Stop 1 function can safely stop the drive in
accordance with IEC 60204-1, Stop Category 1. When the
SS1 function is selected, the drive independently brakes
along a quick stop ramp, the deceleration is monitored
(OFF3) and Safe Torque Off and Safe Brake Control (if en-
abled) are automatically activated when the selected safety
delay time has expired.
Application, customer benefits
When activating the stop function, if the drive train does
not come quickly enough to a standstill as a result of the
load torque, then it can be actively braked by the drive. As
a result of this integrated fast brake function, frequently it
is possible to eliminate mechanical brakes which wear, or to
reduce the load on them. This means that maintenance
costs and stress on the machine can be reduced.
Safety integrated
∆t
v
t
G_D211_XX_00205
STO
G_D213_EN_00090
Brake
diagnostics
Motor holding
brake
Safe Brake Adapter
M
M
P24
∆t
v
t
G_D211_XX_00205
STO
4/16