Under-Voltage Monitoring; Tag-Out; Tag-Out On; Tag-Out Off - Siemens TXP-CLC Manual

Under-voltage monitoring

Fast switch off of motors affected by a bus under-voltage can be achieved with
an under-voltage monitoring function (UGS), to prevent charring of the contacts
or motor overheating failure. The motor is restarted automatically if the voltage
returns within a configurable maximum time (parameter "TUM"). The drive
remains switched-off if the power failure lasts longer than the permissible failure
time and the message "Under-voltage protective action" is sent to the Operating
and Monitoring system Alarm Summary Display. The function also permits
staggered start-up of motors when the voltage returns. It is possible to prevent an
overload on the bus. The staggered start times can be configured with parameter
"TWS" for each drive.

TAG-OUT

The TAG-OUT function allows the DCM to be made inactive. It is in addition to
the plants existing lockout / tag-out procedure and does not replace it. When tag-
out is active neither Manual, Automatic nor Protection commands can send
outputs to the motor drive. Nevertheless, the feed-back messages of the system
are updated and indicated on the OM 650 for the operator.
The TAG-OUT function can only be used after adequate configuration of
parameters "TOUS" and "RMS". The switchover and the indication of TAG-OUT
are done via the operating window of the OM 650. The TAG-OUT function can
only be used when the DCM is in Manual and the motor/solenoid valve is in the
OFF/CLOSED position.

TAG-OUT ON

•
Disables "On" and "Off" output. For example, the motor/solenoid valve is
not operable from the OM 650 or from any logic inputs, including
protection commands.
•
The acquisition and indication of feed-back messages, e.g. "MOTOR ON"
is continued independently

TAG-OUT OFF

•
The DCM operates normally: command processing takes into account the
operating modes "Automatic", "Semi" and "Manual".
4
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