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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
page 306.
Motor speed
A
B
A
SMS trip limit positive (parameter SMS.14)
B
SMS trip limit negative (parameter SMS.13)
C
Response time (depends on system configuration, see page 437)
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 SSE.13). 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 also activated (see the note on page 42). See section
stop emergency (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.
How to configure SMS, version 1
on page
93
for more information on how to configure the SSE
Safety functions 143
C
- ->
Safe stop emergency (SSE)
1
3
2
on
Time
Drive STO state
& indication
SSE state
& indication
Safe
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- Fso Module and Safety System Components
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