KROHNE IFC 090 Supplementary Installation & Operation Instructions page 25

Supplementary Documentation
IFC090, IFC090 i with FF
IFC090 FF 01/2005
Parameter
OUT_PTRIP
OUT_RANGE
OUT_TRIP
OUTAGE_LIM
PCT_INCL
PRE_TRIP
PULSE_VAL1
PULSE_VAL2
RESET_CONFIRM
RESET_IN
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Tel.: 0203-301 309 Fax: 0203-301389 · E-mail: krohne@krohne.de
IFC090-FF Block Description
Access Description
Second discrete output. OUT_PTRIP can be used within a control system, to
R/W
get a discrete indication, that a specified value of totalization is reached (e.g.
as indication to start closing a valve). The specified value to reach can be set
in parameter PRE_TRIP.
NOTE:
If the totalization reaches PRE_TRIP, OUT_PTRIP is set to 255 (0xFF).
see also: PRE_TRIP, OUT_TRIP
Display scaling of the output OUT. It has no effect on the block and is used
R
by downstream blocks or control system to get the unit of the totalization.
Second discrete output. OUT_TRIP can be used within a control system, to
R/W
get a discrete indication, that the specified value of totalization for resetting
(automatic reset is selected) is reached. The specified value to reach can be
set in parameter TOTAL_SP.
see also: TOTAL_SP, OUT_PTRIP
Maximum tolerable time for power failure. Not used by the IFC090-FF
R/W
Percentage of BAD and Uncertain net flow values used in conjunction with
R
GOOD_LIM and UNCERT_LIM to determine the status of the output value
OUT. It is calculated by the following equation:
PCT_INCL = 100 * (1 - (rtotal / atotal),
where rtotal is the portion of BAD and Uncertain net flows and atotal the
absolute value of all net flows.
see also: GOOD_LIM, UNCERT_LIM
When integration is counting up (see INTEG_TYPE) and the totalization
R/W
value equals or exceeds (TOTAL_SP - PRE_TRIP) then the discrete output
OUT_PTRIP is set to 0xFF.
If counting down and the value of OUT is equal to or less than PRE_TRIP,
the discrete output OUT_PTRIP is set to 0xFF.
see also: OUT_PTRIP
PULSE_VAL1 specifies the factor by witch IN_1 is to be multiplied if IN_1 is
R/W
used as input of accumulated pulses (i.e. 'Input 1 accumulate' is set in
INTEG_OPTS). In this respect, IN_1 will be converted according to the
following equation:
IN_1 = IN_1 * PULSE_VAL1
PULSE_VAL2 specifies the factor by witch IN_2 is to be multiplied if IN_2 is
R/W
used as input of accumulated pulses (i.e. 'Input 1 accumulate' is set in
INTEG_OPTS). In this respect, IN_2 will be converted according to the
following equation:
IN_2 = IN_2 * PULSE_VAL2
RESET_CONFIRM can be used by control systems to confirm a reset event
R/W
report if 'Confirm reset' is set in INTEG_OPTS.
RESET_IN can be used by control systems to reset the totalization by an
R/W
external signal. By setting 'value' to 'Reset' (0x01) and a status of
GoodNC:NS:NL, the integrator will be reset as if OP_CMD_INT was set to
'Reset'.
see also: OP_CMD_INT, INTEG_TYPE
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