Verification and validation 333
Validation of the STO function
General validation principles:
• The STO function is the basic safety function. It must always be configured and
validated before (and independent of) other safety functions. This is essential
because the internal diagnostics of the FSO module can trigger the STO function
even no external request signal has been defined for the function.
• The STO function must always be tested with a separate request signal. The
signal is connected to a suitable FSO module input, and the input is configured to
be the interface for the STO request.
• If the stop by coast time from the maximum process speed to zero speed is not
known, it must be measured, and parameter
set accordingly.
• If an encoder is not used, it must be ensured by other means (for example, by a
visual check) that the motor shaft stops within the
delay time and that the
STO function cannot be acknowledged before the motor shaft has stopped. The
only exception to this is when
has been set
shorter than
delay time. In that case, the fly-start of the motor is possible.
To validate the STO function:
1. Make sure that the input for the STO function is configured according to the wiring
diagram.
2. Make sure that the output to indicate the drive STO state (
) is
configured correctly according to your design.
3. Make sure that the STO function is configured correctly according to your design.
For a configuration example, see chapter
. Check
these settings:
Activation:
•
•
•
Note:
Activation can also come from the PROFIsafe.
Acknowledgement:
•
•
if manual acknowledgement is
used.
Functionality:
•
(if fly-start is used)
•
Time to zero speed with STO and modoff
.
(This is the estimated time
in which the motor coasts to a stop from the maximum process speed.)
Indication:
•
Содержание FSO-12
Страница 1: ... OPTIONS FOR ABB DRIVES FSO 12 safety functions module User s manual ...
Страница 4: ......
Страница 12: ...12 Table of contents ...
Страница 26: ...26 Introduction to the manual The PROFIsafe certificate for the FSO 12 module is attached below ...
Страница 36: ...36 Safety information and considerations ...
Страница 136: ...136 Safety functions ...
Страница 196: ...196 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Страница 200: ...200 PROFIsafe ...
Страница 326: ...326 Start up ...
Страница 386: ...386 Dimension drawings ...