Yokogawa EJX930A - Manual (Page 89)

<Appendix 2. Integrator (IT) Block>
A2-5
IM 01C25T02-01E
Table A2.1 INTEG_TYPE
Name
Integration
Method
Integration Range
Reset Trigger (Reset if one of the
following conditions is established)
Trip Output
UP_AUTO(1) Counting up
Starting from "0"
-INF< Total <TOTAL_SP
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• OUT reaches TOTAL_SP.
• RESET_IN = 1
• OP_CMD_INT = 1

UP_DEM(2)
Counting up
Starting from "0"
-INF< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• RESET_IN = 1
• OP_CMD_INT = 1

DN_AUTO(3)
Counting down
Starting from
TOTAL_SP
0< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• OUT reaches "0."
• RESET_IN = 1
• OP_CMD_INT = 1

DN_DEM(4)
Counting down
Starting from
TOTAL_SP
-INF< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• RESET_IN = 1
• OP_CMD_INT = 1

PERIODIC(5) Counting up
Starting from "0"
-INF< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• At the period specified by
CLOCK_PER
• OP_CMD_INT = 1
×
DEMAND(6)
Counting up
Starting from "0"
-INF< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• RESET_IN = 1
• OP_CMD_INT = 1
×
PER&DEM(7) Counting up
Starting from "0"
-INF< Total <+INF
0< ATotal <+INF
0< RTotal <+INF
-INF< AccTotal <+INF
• At the period specified by CLOCK_PER
• RESET_IN = 1
• OP_CMD_INT = 1
×
Legend  : Trip output is made. × : No trip output is made.
A2.5 Output Process
There are the following three output parameters:
1. OUT
2. OUT_TRIP
3. OUT_PTRIP
Parameters OUT_TRIP and OUT_PTRIP are used only when INTEG_TYPE is a value from 1 to 4.
A2.5.1 Status Determination
The same criteria for determining the status of the output of the Integrator block are used in common for the
above three parameters.
0% UNCERT_LIM GOOD_LIM 100%
PCT_INCL
GOOD Uncertain Bad
PCT_INCL=100×(1 - (msp of RTotal)/(msp of ATotal))
msp of RTotal: RTotal value that is converted into a short floating-point number
msp of ATotal: ATotal value that is converted into a short floating-point number
RTotal: Integrated value of the absolute values of the increments whose status is bad
ATotal: Integrated value of the absolute values of the increments regardless of the output status
FA0204.ai
Figure A2.4 Status of OUT, OUT_TRIP, and OUT_PTRIP Outputs