Schweitzer Engineering Laboratories SEL-734, Instruction Manual, Page: 254 / 344

D.4
SEL-734 Meter Instruction Manual Date Code 20090730
Setting SEL
OGIC
Control Equations
Processing Order and Processing Interval
SEL
OGIC
control equation settings that are set directly to 1 (logical 1) or 0
(logical 0) also have to be included in these limitations with each such setting
counted as one Meter Word bit.
Processing Order and Processing Interval
The meter elements and logic (and corresponding SEL
OGIC
control equation
settings and resultant Meter Word bits) are processed in the order shown in
Table D.3 (top to bottom). They are processed every processing interval
(25 ms), and the Meter Word bit states (logical 1 or logical 0) are updated with
each interval. Once a Meter Word bit is asserted, it retains the state (logical 1
or logical 0) until it is updated again in the next processing interval.
Table D.3 Processing Order of Meter Elements and Logic (Top to Bottom)
Meter Elements and Logic
Processing Order
for SEL
OGIC
Control
Equations and
Meter Word Bits
Instruction
Manual Reference
Analog and digital data acquisition
Expansion Slot #2, I/O Board IN101–IN102
IN401–IN404 Section 8 ,
Section 9 , and
Section 10
Remote Control Switches RB01–RB16 Section 8
Voltage Sag/Swell/Interruption
Elements SAG xx , SW xx ,
INT xx , where xx = A,
B, C, AB, BC, CA, or 3P
Section 6
SEL
OGIC
Control
Equation Variables/Timers
SV01–SV16,
SV01T–SV16T Section 8
Math SEL
OGIC
Variables MV01–MV16 Section 8
Fault detector for Target Logic and
Metering FAULT Section 4 and
Section 9
Output Contact Equations Expansion
Slot #2, I/O Board OUT101–OUT103
OUT401–OUT404 Section 8
Latch Bits Set/Reset Equations SET01–SET16,
RST01–RST16 Section 8
M
IRRORED
B
ITS®
Transmit
Equations
TMB1A–TMB8A,
TMB1B–TMB8B Appendix G
Event Report Trigger ER1–ER3 Section 6
Display Points DP01–DP16 Section 8
SEL
OGIC
Counter Equations SC01–SC16 Section 8
Software Alarm SALARM Section 8
Courtesy of NationalSwitchgear.com