6.6 Runtime counter for machines and devices OPTM
6.6.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Runtime counter for machines and
devices
MDSOPT OPTS OPTM
6.6.2 Function block
GUID-C20AF735-FF25-411B-9EA6-11D595484613-ANSI V2 EN
Figure 450: Function block
6.6.3 Functionality
The generic operation time counter function OPTM calculates and presents the
accumulated operation time of a machine or device as the output. The unit of time for
accumulation is hour. The function generates a warning and an alarm when the
accumulated operation time exceeds the set limits. It utilizes a binary input to indicate the
active operation condition.
The accumulated operation time is one of the parameters for scheduling a service on the
equipment like motors. It indicates the use of the machine and hence the mechanical wear
and tear. Generally, the equipment manufacturers provide a maintenance schedule based
on the number of hours of service.
6.6.4 Operation principle
The function can be enabled and disabled with the Operation setting. The corresponding
parameter values are “Enable” and “Disable”.
The operation of OPTM can be described using a module diagram. All the modules in the
diagram are explained in the next sections.
Section 6 1MAC059074-MB A
Supervision functions
874 615 series ANSI
Technical Manual