
Safety functions 177
Safe maximum speed (SMS)
The SMS function is used to protect the machine from too high speeds/frequencies.
You can configure it to be permanently on or off. There are two different versions of
the SMS function:
1.
Version 1
: If the motor speed reaches the minimum or the maximum SMS trip
limit, the FSO module activates the SSE function.
2.
Version 2
: The minimum and maximum SMS limits limit the motor speed. This
version of the SMS function is similar to the SLS function except that it can only
be permanently on or off.
The required version of the SMS function is selected with FSO parameters.
You can configure the minimum and maximum SMS and SMS trip limits separately.
Summary of Contents for FSO-21
Page 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Page 4: ......
Page 16: ...16 Safety instructions ...
Page 34: ...34 Safety information and considerations ...
Page 52: ...52 Overview ...
Page 236: ...236 PROFIsafe ...
Page 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Page 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Page 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 286: ...286 PROFIsafe ...
Page 304: ...304 Installation ...
Page 400: ...400 Configuration ...
Page 488: ...488 Verification and validation ...
Page 506: ...506 Fault tracing ...
Page 514: ...514 Maintenance ...
Page 536: ...536 Technical data ...