132 Safety functions
Prevention of unexpected start-up (POUS)
The POUS function prevents the machine from starting unexpectedly. The POUS
function activates the Safe torque off (STO) function in the drive.
WARNING!
The situations in which you can use the POUS function must
always be based on a risk assessment (see IEC 60204-1:2016).
For more information on the STO function in the ACS880 drives, see the drive
hardware manual.
The operation of the POUS function is described in the time diagram and table below.
For configuration, see section
on page
A
POUS delay for completion (parameter
): An additional security delay. The
POUS completed indication (parameter
) goes on after this delay.
1
2
4
Drive STO state
& indication
A
POUS active
indication
POUS request
6
5
3
POUS completed
indication
Motor speed
Time
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 ...