KROHNE IFC 090 Supplementary Installation & Operation Instructions page 27

Supplementary Documentation
IFC090, IFC090 i with FF
IFC090 FF 01/2005
Parameter
TIME_UNIT1
TIME_UNIT2
TOTAL_SP
UNCERT_LIM
UNIT_CONV
UPDATE_EVT
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Tel.: 0203-301 309 Fax: 0203-301389 · E-mail: krohne@krohne.de
IFC090-FF Block Description
Access Description
TIME_UNIT_1 specifies the time unit of IN_1, if IN_1 comes from a pulse
R/W
input block (i.e. 'Input 1 accumulate' is set in INTEG_OPTS) and converts
the input IN_1 according to one of the following time unit:
s
min
h
d
TIME_UNIT_2 specifies the time unit of IN_2, if IN_2 comes from a pulse
R/W
input block (i.e. 'Input 2 accumulate' is set in INTEG_OPTS) and converts
the input IN_2 according to one of the following time unit:
s
min
h
d
Setpoint for batch totalization. Meaning depends on the chosen type of
R/W
integration. (see INTEG_TYPE for details).
see also: INTEG_TYPE
UNCERT_LIM specifies the limit for Uncertain status of parameter OUT. If
R/W
PCT_INCL gets below this limit, the status of parameter OUT turns from
Uncertain to BAD (unless GOOD_LIM equals UNCERT_LIM):
UNCERT_LIM ≤ PCT_INCL ⇒ OUT.status = Uncertain
PCT_INCL < UNCERT_LIM ⇒ OUT.status = BAD
see also: GOOD_LIM
UNIT_CONV is used as a factor to convert the engineering units of IN_2 into
R/W
the engineering units of IN_1, after IN_2 was converted according to it's time
unit.
This is only true, if IN_2 is connected to another output parameter!
NOTE:
This is necessary since in the integration process, the (converted) inputs
IN_1 and IN_2 are added which presupposes a common unit base.
Alert generated by a change to static data. The subfields of this parameter
R
give detailed information about the changed static parameter, time of change
and state of the update event.
Table 4: Integrator Blocks parameters
second
minute
hour
day
second
minute
hour
day
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