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42 Overview
Safe brake control (SBC)
This safety function provides a safe output for controlling external (mechanical)
brakes. When you use the SBC function with other safety functions of the FSO
module, it is always combined with the drive STO function. That is, the SBC function
is activated before, at the same time with or after the drive STO function.
STO function and SSE with immediate STO
In these safety functions, you can configure the SBC function to be activated before,
at the same time with or after the drive STO function. See sections
•
SBC after STO
•
SBC before STO
•
SSE with immediate STO, SBC after STO
•
SSE with immediate STO, SBC before STO
When you use an encoder, you can also configure the SBC function to be activated at
a user-defined speed limit. See sections
•
STO with speed limit activated SBC
•
SSE with immediate STO, with speed limit activated SBC
Note: When you use the SBC function together with the STO function, the SBC is
activated also when the drive STO is activated at zero speed in the SSE and SS1
functions.
Note: The FSO module activates the SSE function after trip limit hits in the SLS and
SMS functions. As a result, this activates the drive STO and SBC functions (for more
information, see section
you dimension the brake correctly for these situations.
SS1 function and SSE with emergency ramp
In these safety functions, you can configure the SBC and STO combination to be
activated at a user-defined speed limit while ramping down to zero speed. See
sections
•
SS1 with speed limit activated SBC
•
SSE with speed limit activated SBC
You can also define a delay so that the SBC is activated first at the user-defined
speed limit and the drive STO after the delay. See sections
•
SS1 with speed limit activated SBC, SBC before STO
•
SSE with speed limit activated SBC, SBC before STO
on page 60,
on page 63,
Safe stop emergency (SSE)
on page
96
and
on page 99.
on page
66
and
on page 93). Make sure that
on page
77
and
on page 111.
on page
on page 111.
77
and
on page 119.
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