ControlMaster CM30, CM50 and CMF310
Universal process controllers,
1
/
4
,
1
/
2
DIN and fieldmount
7 Advanced Level
72
IM/CM/ED–EN Rev. X
7.7 Totalizer
Two 9-digit totalizers are provided. These can be configured independently to
totalize any analog or digital signal. Four modes of operation are provided.
Where possible, the count rate is calculated automatically according to source
units, totalizer units and engineering range.
Totalizer 1 (2)
Mode
Off
Totalizer disabled.
Analog
Totalization of any analog signal.
Digital
Counting of low / high transitions of any digital signal (for example, digital input or alarm)
minimum pulse duration >125 ms.
Frequency
Totalization of a frequency input on Analog input 1.
Pulse
Totalization of a pulse input on Analog input 1.
S
ource
The input to be totalized. The inputs available for selection are dependent on the
selected
Mode
. Not displayed for frequency and pulse inputs – see Appendix A, page
104 for description of sources.
Count Direction
Up
Totalizer value increases with time.
Down
Totalizer value decreases with time.
Units
(Totalizer) units are used along with the source's units and engineering range to calculate
the count rate automatically (where possible). Where the units or mode required do not
allow this, the count rate must be calculated manually – see Section 7.7.1, page 74.
Count Rate
In
Analog
mode, this represents the counts (in volume units) / second when the source is
at its engineering high value.
In
Digital
,
Frequency
and
Pulse
mode, this represents the number of totalizer (volume)
units / pulse.
Cutoff
The lowest input value (in engineering units) at which the totalizer stops counting.
S
top Go
S
ource
The source required to stop and start the totalizer. Selection is made on the rising edge.
Menu
Totalizer
Exit
Select
Start
Stop