Safety functions 179
SMS function, version 2
The operation of the SMS function, version 2 is described in the time diagram and
table below. For configuration, see section How to configure SMS, version 2 on
page 375.
The drive limits the motor speed so that it stays between the SMS limit positive and
negative. If the motor speed still hits the SMS trip limit positive or negative, the FSO
module activates the SSE function (see section Safe stop emergency (SSE) on
page 106 for more information on how to configure the SSE function).
If you use the SMS function, version 2 and you need to remove the FSO module from
the drive, do these steps:
1. Re-configure the FSO module so that the SMS function, version 2 is deactivated
(set parameter 200.71 SMS activity and version to Disabled). For more
information, see chapter Configuration.
2. Remove the FSO module from the drive.
This removes the SMS limits from the drive. Unnecessary limits can affect the normal
operation of the drive.
A SMS trip limit positive (parameter SMS.14)
B SMS trip limit negative (parameter SMS.13)
C SMS limit positive (parameter 200.73)
D SMS limit negative (parameter 200.72)
SMS trip limits (A and B)
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