Advanced Configuration Level; Introduction To Totalization - ABB COMMANDER 1900 Series User Manual

...4.1 Introduction to Totalization

Example A – setting up:
• engineering range of 0 to 2500 representing a range of 0 to 250,000 gallons per hour
• filling a storage tank with a capacity of 500,000 gallons
• least significant digit of 1 gallon shown on totalizer display (viewed in
• wrap function off, 1 second wrap pulse generated at predetermined value and combined in a logic equation to stop flow.
Engineering Range
(Display Range)
2500
Engineering
Flow Rate High
Engineering
Flow Rate Low
0
Set up in ,
Set Up Input (PV)
BASIC CONFIGURATION LEVEL
Units/Second =
3,600 (in seconds)
Count Rate (High) =
Example B – setting up:
• engineering range of 0 to 2500 representing a range of 0 to 2,500,000 gallons per hour
• measuring effluent discharge
• last significant digit of 100 gallons shown on totalizer display (viewed in
• wrap function on, front panel total automatically reset to 0 and continues counting when predetermined value is reached.
Engineering Range
(Display Range)
2500
Engineering
Flow Rate High
Engineering
Flow Rate Low
0
Set up in ,
Set Up Input (PV)
BASIC CONFIGURATION LEVEL
2,500,000
Units/Second =
Count Rate (High) =
Note. For the majority of applications the
to zero, is it necessary to calculate the Count Rate Low setting, e.g. when the resultant flow range of several flows added
together always ensures a minimum flow is greater than zero.
Count Rate
Count
High/Low
Direction
Predetermined
Value
CNt–HI
069. 4
Count Up
CNt–LO
000. 0
Preset Value
See
250,000
= 69.4 gallons/second
69.4
= 69.4 pulses/second
1
Count Rate
Count
High/Low
Direction
Predetermine
CNt–HI
d Value
06. 9 4
Count Up
CNt–LO
0000
Preset Value
See
= 694.4 gallons/second
3,600
694.4
= 6.94 pulses/second
100
Count Rate Low

4 ADVANCED CONFIGURATION LEVEL...

,
Totals Page OPERATOR LEVEL
Preset/Predetermined
Count
Predetermined
Value
0050
0000
Count Up
0000
0000
Preset Value
Totals Page
Preset/Predetermine
d Count
Predetermine
d Value
9999
9999
Count Up
0000
0000
Preset Value
0000
is set to . Only if the engineering Flow Rate Low is not
• Totalization
)
Wrap On/Off
Stop Flow and
Counting at
500,000
Wrap Off
Start Counting
at 0
, )
OPERATOR LEVEL
Wrap On/Off
Reset to 0 when
99,999,999 reached
Wrap On
Start Counting
at 0
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