79
DL30-G USERS MANUAL EM-8571-G Rev.2
0
-2000
12000
10000
Analog Accumulation
Analog input is treated as pulse input.
Processing cycle fixed at 1 sec.
(sampling cycle)
Unit Time
AI% data
(-2000 to 12000)
The rectangular area equals “Counter Rate.”
(enclosed by bold line)
The total bargraph area
equals “Accumulated Value.”
Low-end Cutout
Input lower than the low-end
cutout value is fixed at 0.
1
2
When the AI% data remains at 100% (10000) for the unit time period, it is converted to a preset number of pulses called “Counter Rate.”
The rectangular area in the above graphs corresponds to the Counter Rate.
Actual AI% value (0 to 10000) is accumulated and converted as “Accumulated Value” into the number of pulses using the Counter Rate.
The total graph area in the above graphs corresponds to the Accumulated Value.
The Accumulated Value is treated just like other pulse inputs, multiplied by “Scaling” into an engineering unit value.
[Example]
Flow value is sent as a voltage signal. 1 V corresponds to 0 m
3
/h, while 5 V corresponds to 30 m
3
/h.
In order to use analog accumulation, choose “%” as “Data Type”. 1 V at 0%, 5 V at 100%.
Choose “Hour” as “Time Unit” for the engineering unit m
3
/h.
If “Counter Rate” is set to “30” an accumulated value of 30 is given when AI remains at 100% (5 V) for 1 hour.
1
2
