Specifications

3Ć46 Theory of Operation: Point Processing
Original Ć June 1990CE4.2:CL6211
Figure 3Ć11Ć17. PI/PID/I Auto/Man/RSP Loop Point Block Diagram
TO
ALARM C
HIGH OR LOW (C) TRIP POINT (T) DEADBAND (T)
ALARM C
ALARM B
HIGH OR LOW (C) TRIP POINT (T) DEADBAND (T)
TRIP POINT (T)
DEVIATION ALARM (0)
ALARM B (0)
NOTE: ONLY ONE DEADBAND MAY BE SPECIFIED FOR ALL THREE ALARMS.
DEVIATION ALARM
REVERSE OR
RESTART LAST MODE? (C) RESTART MODE (T)
MODE CONTROL FROM CONSOLE OR
TO
MODE LOGIC
YES OR NO (C) RESTART
RESTART LAST IVP?
MANUAL OUTPUT (0) FROM CONSOLE OR
OUTPUT
TRANSFER
OUTPUT TRACKING
IVP LIMITS
VALVE ACTION
CONTROLLER CURRENT OUTPUT
OUTPUT TRACKING/NORMAL (O)
IVP HIGH LIMIT (T) IVP LOW LIMIT (T) INCREASE OPEN/CLOSE (T)
TO OPERATOR
IVP (0)
PROCESS VARIABLE
DEVIATION
CONTROL ACTION
SET POINT
TRANSFER
SP (0)
SSS
SS
S
SS
SSS S
SSS
SS
SS
TO
YES OR NO (C)
RESTART LAST SP
RESTART
SET POINT (T)
SS
SP TRACKS IN MAN
PV (0)
TRACK VALUE
VALVE ACTION
TRACK CONTROL
INCREASE OPEN/CLOSE (T)
S
REMOTE SET POINT VALUE
OUTPUT OVERRIDES MANUAL? (C)
S
SP HIGH LIMIT (T) SP LOW LIMIT (T)
Control Sequence with Bias Auto/Man/RSP Controller Block Diagram
DEADBAND (T)
YES OR NO (C)
S
MODE (O)
OPERATOR STATION
OPERATOR STATION AND DATA HIGHWAY
STATION
OPERATOR
DATA HIGHWAY
TO DATA HIGHWAY TO OPERATOR STATION AND
TRACKING
SET POINT LIMITS
(O)
DIRECT (T)
NOTES:
(C) (T) (O)
CONFIGURE TUNE OPERATE ANALOG SIGNALS DISCRETE SIGNALS
IVP(T)
TO OPERATOR STATION
OR
ALARM B OR C (0)
DATA HIGHWAY
LOCAL SET POINT FROM CONSOLE OR OPERATOR STATION (O)
OPERATOR STATION
AND DATA HIGHWAY
STATION AND DATA HIGHWAY
TO OPERATOR STATION AND DATA HIGHWAY
OUTPUT TRACK LOGIC
SET POINT VELOCITY LIMIT
YES OR NO (C) VELOCITY LIMIT (T)
DEVIATION
OUTLET SVA
INLET SVA
SEE NOTE A
NOTE A: ANY NUMBER AND TYPE OF
SS
FUNCTION MAY BE INSERTED, EXCEPT FOR THE FEEDFORWARD , LOOP, AND END FUNCTIONS.
ADD RAMPING
BIAS DISPLAY
BIAS VALUE
S
BIAS VALUE (O)
TO DATA HIGHWAY
TO OPERATOR STATION
S
YES OR NO (O)
TRANSFER RAMPING
YES OR NO (C) RAMP TIME (T)
S
S