Operation Principle - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
11.8.6

Operation principle

The elapsed time integrator (TEIGGIO) provides
• time integration, accumulating the elapsed time when a given binary signal has been high.
• blocking and reset.
• supervision of limit transgression and overflow.
• retaining of the integrated value if any warning, alarm or overflow occurs.
Figure 80
the first two items listed above while "Transgression Supervision Plus Retain" contains the logics for
the last two.
tWarning
tAlarm
BLOCK
RESET
IN
IEC12000195 V4 EN-US
Figure 80:
TEIGGIO main functionalities are
• integrate the elapsed time when IN has been high
•
•
•
•
• RESET: Reset the integration value. Consequently all other outputs are also reset
•
•
• BLOCK: Freeze the integration and block/reset the other outputs
•
•
• Monitor and report the conditions of limit transgression
•
•
•
The ACCTIME output represents the integrated time in seconds while tOverflow, tAlarm and
tWarning are the time limit parameters in seconds.
Technical Manual
describes the simplified logic of the function where "Time Integration" covers the logics for
Time Integration
TEIGGIO Simplified logic
applicable to long time integration (≤999 999.9 seconds)
output ACCTIME presents integrated value in seconds to all tools
integrated value is retained in non-volatile memory, if any warning, alarm or overflow
occurs
any retained value with a warning/alarm/overflow shall be available as the initiation value
for the integration followed by a restart.
regardless of the input IN value
reset the value of the non-volatile memory to zero.
regardless of the other input signal values
BLOCK input overrides RESET input.
overflow if output ACCTIME > tOverflow
alarm if ACCTIME > tAlarm
warning if ACCTIME > tWarning.
© 2021 Hitachi Energy. All rights reserved.
Loop Delay
Transgression Supervision
Plus Retain
Loop Delay
Section 11
Logic
GUID-04CC8365-DCDE-4DC7-BEF0-6EF8382305DD v1.1.1
OVERFLOW
WARNING
ALARM
ACCTIME
IEC12000195-4-en.vsd
147