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180 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/DCS880 drives, see the
corresponding 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
): Sets a delay for POUS completed
indication. The POUS completed indication (parameter
) goes on after this
delay.
Note:
POUS function does not activate SBC function, even if SBC is configured into use
together with the STO function.
1
2
4
Drive STO state
& indication
A
POUS active
indication
POUS request
6
5
3
POUS completed
indication
Motor speed
Time
Содержание FSO-21
Страница 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Страница 4: ......
Страница 16: ...16 Safety instructions ...
Страница 34: ...34 Safety information and considerations ...
Страница 52: ...52 Overview ...
Страница 236: ...236 PROFIsafe ...
Страница 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Страница 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Страница 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Страница 286: ...286 PROFIsafe ...
Страница 304: ...304 Installation ...
Страница 400: ...400 Configuration ...
Страница 488: ...488 Verification and validation ...
Страница 506: ...506 Fault tracing ...
Страница 514: ...514 Maintenance ...
Страница 536: ...536 Technical data ...
Страница 538: ...538 Dimension drawings 3AXD50000018513 ...