YOKOGAWA UP750, Руководство пользователя

Страница: 123 / 130

<Toc> <7. Function Block Diagram and Descriptions>
7-3
IM 05E01B02-41E 1st Edition : May 31,2000-00
■
Function Block Diagram for Single-loop Heating/Cooling Control
Control computation
Heating-side
output limiter
Cooling-side
output limiter
MAN
PV input
terminals , and 12 13 11
15 V loop
power supply
Retransmission
output
17 16
Current or pulse
terminals and
Relay
terminals
, and 2 3 1
Current or pulse
terminals
and 47 46
Current
terminals
and 15 14
Current
*1
terminals
and 17 16
Terminal Parameter Function
Analog signal Contact signal
Legend
DO7 DO6 DO5 DO4 DO3
DO3 DO4
DO2 DO1
INPUT1
AUTO
STOP/RUN
switching
OT1
Cooling-side
output
OUTPUT2 OUTPUT1 OUTPUT3
RET2 RET1
OT1
Heating-side
output
OUTPUT1 OUTPUT1
DI7
Contact input
DI6 DI5
Cooling-side
preset output Heating-side
preset output
DI1 DI2 DI3 DI4
RDI104 to 108
AUTO (ON)/MAN (OFF) switching (RDI103)
RDI101 to 103
R251 to 258 R151 to 158
Analog input range conversion
Analog input bias
Square root extraction
Analog input filter
10-seg. linearizer approx./bias
PV input bias
PV input filter
Input selection
Unit selection
Manual operation
Heating/cooling
computation
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
*3
Time
event 2
Time
event 3
Time
event 4
Instrument
alarm 1
*2
*1: Unavailable when
heating-side output is
current or pulse.
*2: Unavailable when
cooling-side output is
relay.
*3: Unavailable when
cooling-side output is
transistor.
PV event output
Time event output
Instrument alarm output
A/M
Relay or
transistor