Siemens SINUMERIK 840D sl - Page 162

Connection of the Components
5.12 Brake Control
Guide for the SINUMERIK 840D sl machine configuring
5-78 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
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Figure 5-38 Operating modes of the conventional brake control
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 TIMING 2
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3XOVHHQDEOH
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Start with ON command
Stop with OFF1 command
Start with ON command
Stop with OFF3 command (rapid stop)