Application - ABB RED615 Technical Manual

1YHT530004D05 D
6.5.5
615 series
Technical Manual
increasing from the previous value. The count of OPR_TIME saturates at the final
value of 299999, that is, no further increment is possible. The activation of RESET
can reset the count to the Initial value setting.
Limit Supervision
This module compares the motor run-time count to the set values of Warning value
and Alarm value to generate the WARNING and ALARM outputs respectively when
the counts exceed the levels.
The activation of the WARNING and ALARM outputs depends on the Operating time
mode setting. Both WARNING and ALARM occur immediately after the conditions
are met if Operating time mode is set to "Immediate". If Operating time mode is set
to "Timed Warn", WARNING is activated within the next 24 hours at the time of the
day set using the Operating time hour setting. If Operating time mode is set to
"Timed Warn Alm", the WARNING and ALARM outputs are activated at the time of
day set using Operating time hour.
The Operating time hour setting is used to set the hour of day in
Coordinated Universal Time (UTC). The setting has to be adjusted
according to the local time and local daylight-saving time.
The function contains a blocking functionality. Activation of the BLOCK input
blocks both WARNING and ALARM.

Application

The machine operating time since commissioning indicates the use of the machine.
For example, the mechanical wear and lubrication requirement for the shaft bearing
of the motors depend on the use hours.
If some motor is used for long duration runs, it might require frequent servicing,
while for a motor that is not used regularly the maintenance and service are
scheduled less frequently. The accumulated operating time of a motor together with
the appropriate settings for warning can be utilized to trigger the condition based
maintenance of the motor.
The operating time counter combined with the subsequent reset of the operating-
time count can be used to monitor the motor's run time for a single run.
Both the long term accumulated operating time and the short term single run
duration provide valuable information about the condition of the machine and
device. The information can be co-related to other process data to provide
diagnoses for the process where the machine or device is applied.
Section 6
Supervision functions
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