Siemens SINUMERIK 840D sl Manual page 162

Connection of the Components
5.12 Brake Control
Figure 5-38
Timing examples:
In all cases listed below, the drive starts the motion with an ON command (BB/ OFF1). For
clarification, the closing and opening times are set to 500 ms. The acceleration and
deceleration times are 7 seconds (OFF1) and 4 seconds (OFF3), respectively. The drive will
be accelerated to a speed of 2000 RPM. Important control and status bits (OFF1/2/3, holding
brake status, pulse enable) are also shown.
TIMING 1
Start with ON command
Stop with OFF1 command
5-78
Operating modes of the conventional brake control
TIMING 2
Start with ON command
Stop with OFF3 command (rapid stop)
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0