The function can be enabled and disabled with the Operation setting. The corresponding parameter values are "On" and "Off".
The operation of MDSOPT can be described using a module diagram. All the modules in the diagram are explained in the next sections.
Operation time counter
This module counts the operation time. When POS_ACTIVE is active, the count is continuously added to the time duration until it is deactivated. At any time the OPR_TIME output is the total duration for which POS_ACTIVE is active. The unit of time duration count for OPR_TIME is hour. The value is available through the Monitored data view.
The OPR_TIME output is a continuously increasing value and it is stored in a non-volatile memory. When POS_ACTIVE is active, the OPR_TIME count starts 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 function contains a blocking functionality. Activation of the BLOCK input blocks both WARNING and ALARM.