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178 Safety functions
SMS function, version 1
The operation of the SMS function, version 1 is described in the time diagram and
table below. For configuration, see section
How to configure SMS, version 1
page
A
SMS trip limit positive (parameter
B
SMS trip limit negative (parameter
)
C
Response time (depends on system configuration, see page
)
SMS trip limits (A and B)
Step
Description
1
The motor speed reaches the SMS trip limit positive (A).
2
After time C has elapsed,
the FSO activates the SSE function. In this case, the SSE
function has been configured as “Immediate STO” (parameter
). This opens
the drive STO circuit immediately and the motor coasts to a stop. The STO and SSE
indications go on.
Note
: If SBC is used, it is activated according to SBC configuration settings (see the
). See section
on page
for more
information on how to configure the SSE function.
3
After the SSE function has been completed, the FSO acknowledges the SSE function
(in this case, automatic acknowledgement is used) and deactivates the SSE and drive
STO functions. The indications go off.
1
Drive STO state
& indication
B
A
C
2
SSE state
& indication
3
Motor speed
Time
- ->
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 ...