KROHNE IFC 090 Supplementary Installation & Operation Instructions page 23

Supplementary Documentation
IFC090, IFC090 i with FF
IFC090 FF 01/2005
Parameter
CLOCK_PER
GOOD_LIM
GRANT_DENY
IN_1
IN_2
INTEG_OPTS
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IFC090-FF Block Description
Access Description
CLOCK_PER specifies the time after which the Integrator OUT value should
R/W
be reset, if parameter INTEG_TYPE is set to 'Periodic'.
see also: INTEG_TYPE
GOOD_LIM specifies the limit for Good status of parameter OUT. If the
R/W
percentage of Good input gets below this limit (and above UNCERT_LIM),
the status of OUT turns from Good to Uncertain (unless GOOD_LIM equals
UNCERT_LIM).
see also: UNCERT_LIM
Options for controlling access of host computer and local control panels to
R/W
operating, tuning and alarm parameters of the block.
NOTE:
This parameter is not supported by IFC090-FF
Primary block input with status coming (normally) from another block's output
R
parameter.
see also: IN_2
Secondary block input with status, coming (normally) from another block's
R
output parameter.
see_also: IN_1
INTEG_OPTS is to be used to specify several integration options as type of
R/W
input used in each input, flow direction to be considered in the totalization,
status to be considered in the totalization and if the totalizatiion residue shall
be used in the next batch after a reset. The following INTEG_OPTS are
possible:
Input 1 accumulate
Input 2 accumulate
Flow forward
Flow reverse
Use Uncertain
Use BAD Input
Carry
Add zero if Bad
Confirm reset
Generate reset event
see also: INTEG_TYPE
IN_1 is used as pulse (otherwise as rate)
IN_2 is used as pulse (otherwise as rate)
only positive net flow will be taken into account
for totalization (NOTE: default settig for Integrator
1)
only negative net flow will be taken into account
for totalization (NOTE: default settig for Integrator
2)
IN_1 and IN_2 input will be taken into account
even if their states are Uncertain (otherwise the
value with the last Good status will be taken)
IN_1 or IN_2 with BAD status will be interpreted
as Good (NOTE: only the status is interpreted as
Good, the value isn't used for totalization, but the
good one, i.e. RTOTAL isn't affected with this
setting.
integration after a reset starts with the init value,
but with the residual after the trip value.
If one of the input (IN_1 or IN_2) statuses are
BAD, not the last Good value is used for
totalization, but zero (0).
after a manual reset of totalization, the next
manual reset must be preceded by a reset
confirmation by the control system.
in case of reset (automatic or manual), an event
notification will be sent to the control system.
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