FMC Technologies Proline Promass 83 E - Function Group VALVE PARAMETER

Issue/Rev. 0.2 (12/12) MN0M023 • Page 153
Device Functions Proline Promass 83 10 Block SPECIAL FUNCTION
10.2.2 Function group VALVE PARAMETER
SPECIAL FUNCTION H
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BATCHING FUNCTION HCA
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CONFIGURATION 720
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VALVE PARAMETER 722
Function description
SPECIAL FUNCTION o BATCHING FUNCTION o VALVE PARAMETER
The parameters for the switching contacts of up to 2 valves can be set in the following functions.
The number of switching contacts (valves) available, and thus their settings in this group, is defined in the function
BATCH STAGES (7208).
! Note!
The following functions are only available if at least one batch stage has been selected in the function BATCH
SELECTOR (7200).
OPEN VALVE 1
(7220)
Use this function to specify the quantity value at which contact 1 opens. This is used as a
switch point for valve 1 to output via an assigned output. The quantity value is entered as
a % or as an absolute value, depending on the option in the function INPUT FORMAT
(7209).
User input:
0 to max. value or 0 to 100% (related to the batch quantity)
Factory setting:
0 [unit] or 0 [%]
! Note!
• Dynamic tracking for %-data:
If the value is entered as a %, this %-value always refers to the batching quantity
(e.g. 70% of a batching quantity of 10 liters = 7 liters).
If the BATCH QUANTITY (7203) is adjusted (reduced/increased), the effective
quantity switch point is automatically and dynamically adjusted (e.g. taking 70% and
changing the batching quantity from 10 to 20 liters, the quantity switch point is
adjusted from 7 liters to 14 liters).
• Dynamic tracking for value-data:
If you enter value-input, this value is “absolute” for batching quantities that do not
change (e.g. always 7 liters for a batching quantity of 10 liters). If the batching quantity
(7203) is adjusted (reduced/increased), the quantity switch point is automatically and
dynamically adjusted/tracked (e.g. with a new batching quantity changing from 10 to
20 liters, the quantity switch point is adjusted from 7 liters to 14 liters). In other
words, the existing value data is tracked as a percentage of the altered batching
quantity.
CLOSE VALVE 1
(7221)
Use this function to display the quantity value at which contact 1 (valve 1) closes. The
quantity value is displayed either as a % or as an absolute value, depending on the option
in the function INPUT FORMAT (7209).
Display:
Value or 100% (corresponds to the batching quantity)
Factory setting:
0 [unit] or 0 [%]
! Note!
The switching contact for valve 1 is the “main contact”, i.e. the closing function of valve
1 is firmly assigned to the batching quantity entered, (see function BATCH QUANTITY
(7203) onpage 148). In this way, function CLOSE VALVE 1 is also the basis for
calculating the after run quantity.