Simple Brake Control - Siemens SINAMICS S120 Commissioning Manual

5.10.1

Simple brake control

Overview
The "Simple brake control" is used exclusively for the control of holding brakes. Drives that have
been switched off, can be secured against unwanted motion by the holding brake.
Activation and response
The control command for opening and closing the holding brake is transferred directly via DRIVE-
CLiQ to the Motor Module by the Control Unit that logically links and monitors the signals with
the system-internal processes. The Motor Module then performs the action and activates the
output for the holding brake. The exact sequence control is shown in function diagram 2701 and
2704. The operating principle of the holding brake can be configured via parameter p1215.
p1226
p1226
Figure 5-17
The start of the closing time for the brake depends on the expiration of the shorter of the two
times p1227 (standstill detection monitoring time) and p1228 (pulse cancellation delay time).
Features
The "Simple brake control" function is characterized by the following features:
• Automatic activation by means of sequence control
• Standstill monitoring
• Forced brake opening (p0855, p1215)
• Closing of brake for a 1 signal "unconditionally close holding brake" (p0858)
• Closing of brake after the "Enable speed controller" signal has been canceled (p0856)
Commissioning with Startdrive
Commissioning Manual, 06/2020, 6SL3097-5AA10-0BP2
ON / OFF 1 (p0840[0]=0)
1
Pulse enable
1
Magnetizing completed
Speed setpoint
[1/min]
n
Threshold
[1/min]
Speed actual value
n
Threshold
Output signal
1
Holding brake
Opening time
p1216
Flow diagram: Simple brake control
5.10 Configuring brake control
t
t
t
p1227
t
p1228
t
Closing time
p1217
Commissioning
263