YOKOGAWA UP750, Руководство пользователя

Страница: 122 / 130

7-2
<Toc> <7. Function Block Diagram and Descriptions>
IM 05E01B02-41E 1st Edition : May 31,2000-00
■
Function Block Diagram for Single-loop Control
15 V loop
power supply
Retransmission
output
RUN STOP
AUTO MAN
STOP/RUN switching
AUTO (ON)/MAN (OFF) switching (RDI103)
DI1 DI2 DI3 DI4
RDI104 to 108 RDI101 to 103
DI7
Contact input
DI6 DI5
DO7 DO6 DO5 DO4 DO3 DO2 DO1
OT1
Control
output
OUTPUT1 OUTPUT1 OUTPUT1 OUTPUT3
RET2 RET1
R251 to 258 R151 to 158
INPUT1
PV input
terminals , and 12 13 11
Input selection
Unit selection
Analog input range conversion
Analog input bias
Square root extraction
Analog input filter
10-seg. linearizer approx./bias
PV input bias
PV input filter
Control computation Manual operation
Preset output
17 16
Current or pulse
terminals and
Relay
terminals
, and
2 3 1
Current
terminals
and 15 14
Current
*
terminals
and
17 16
Terminal Parameter Function
Analog signal Contact signal
Legend
Output limiter
Contact Input
Expansion
Program
pattern selection
Start of hold operation
when RDI101 changes
from OFF to ON.
Advance operation
when RDI102 changes
from OFF to ON.
Program operation
Program
operation
Local
operation
Local
setpoint 1
Start of program operation when DI changes from OFF to ON Stop of program operation when DI changes from OFF to ON Start of local-mode operation when DI changes from OFF to ON
Contact Input
Expansion
Contact Output Expansion
PV
event 1
PV
event 2
Time
event 1
Time
event 2
Time
event 3
Time
event 4
Instrument
alarm 1
PV event output
Time event output
Instrument alarm output
A/M
* Unavailable when control output is current or pulse.