•
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.
•
RESET: Reset the integration value. Consequently all other outputs are also reset
•
unconditionally on the input IN value
•
reset the value of the non-volatile memory to zero.
•
BLOCK: Freeze the integration and block/reset the other outputs
•
unconditionally on the signal value
•
BLOCK request overrides RESET request.
•
Monitor and report the conditions of limit transgression
•
overflow if output ACCTIME >
tOverflow
•
alarm if ACCTIME >
tAlarm
•
warning if ACCTIME >
tWarning
.
The ACCTIME output represents the integrated time in seconds while
tOverflow
,
tAlarm
and
tWarning
are the time limit parameters in seconds.
tAlarm
and
tWarning
are user settable limits. They are also independent, that is, there
is no check if
tAlarm
>
tWarning
.
tAlarm
and
tWarning
are possible to be defined with a resolution of 10 ms, depending
on the level of the defined values for the parameters.
tOverflow
is for the overflow supervision with a default value
tOverflow
=
999 999.9
seconds. The outputs freeze if an overflow occurs.
13.9.6.1
Operation Accuracy
The accuracy of TEIGGIO depends on essentially three factors
•
task cycle time
•
the pulse length
•
the number of pulses, that is the number of rising and falling flank pairs
In principle, a shorter task cycle time, longer integrated time length or more pulses
may lead to reduced accuracy.
13.9.6.2
Memory storage
The value of the integrated elapsed time is retained in a non-volatile memory, only if
any warning, alarm or/and overflow occurs. Consequently there is a risk of data loss
in the integrated time at a power failure.
Section 13
1MRK 504 135-UEN A
Logic
406
Technical manual
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