The Sms Signals - Danfoss Vacon OPTEA Operating Manual

VACON® NXP Advanced Safety Options
Operating Guide
Speed
SMS Limit Plus
0
SMS Limit Minus
Illustration 55: The Operation of the SMS Function
If a proximity sensor is used to monitor the speed of the motor, it can be necessary to set the limits to the same absolute value, for
example, 50 and -50. See chapter
Setting a limit to zero does not disable the monitoring.

6.3.3.3 The SMS Signals

It is possible that the Active and Reached signals that are mentioned in this chapter are not always available in all interfaces.
The availability of the signals over safe fieldbus depends on the used fieldbus protocol. Refer to chapter Safe fieldbuses for more
information.
Table 38: The SMS Signals
Signal Activation and deactivation of the signal
SMS Active Activation:
• SMS is requested and starts to execute.
Deactivation (manual acknowledgment):
• Acknowledgment signal received and SMS is not requested.
Deactivation (automatic acknowledgment):
• SMS request ends.
Deactivation (SMS violation situations):
• Reset signal received after SMS had detected a violation and SMS has been acknowl-
edged (implicitly or explicitly).
SMS Activation:
Reached
• SMS is active and speed is within safe range.
Deactivation (manual acknowledgment):
• SMS is acknowledged after being reached successfully.
Deactivation (automatic acknowledgment):
• SMS was reached successfully and SMS request ends.
Deactivation (STO state):
• STO is activated.
Danfoss A/S © 2021.06
3.6.2 Standard Speed Sensors and
N O T I C E
N O T I C E
Combinations.
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Safety Functions
t
Description
The signal indicates if
the SMS function is
being executed.
The signal indicates if
the SMS function has
been reached suc-
cessfully.