YOKOGAWA UT750 User Manual

<Toc> <6. Function Block Diagram and Descriptions>
6-3
IM 05D01B02-41E 1st Edition : May 31,2000-00
■ Function Block Diagram for Single-loop Heating/Cooling Control
SPNO
R/L
OT1
A/M
OUTPUT1 OUTPUT1
OT1
DO4DO3
Relay
or transistor
*4
RS485 DI1 DI2 DI3 DI4 DI5 DI6 DI7INPUT1 INPUT3
DO6DO5DO2DO1OUTPUT1 OUTPUT3
RET2 RET1
OUTPUT2
RMS=COMRMS=RSP
Heating/cooling computation
S/R
Heating-side output limiter Cooling-side output limiter
PV input
terminals , and
Remote input
terminals and
12 1311
2221
Contact input
Communication
terminals to
and to
2723
3028
Input selection
Unit selection
Input selection
Unit selection
Target setpoint selection
Remote setting filter
Communication Aux.Input
Ratio/bias calculation Target setpoints 1 to 8
REMOTE (ON)/LOCAL (OFF) switching
LOCALREMOTE
Control computationManual operation
Target setpoint
ramp-rate function
AUTO (ON)/MAN (OFF) switching
AUTOMAN
STOP (ON)/RUN (OFF) switching
Cooling-side
preset output
Heating-side
preset output
Heating-side
output
Cooling-side
output
15 V loop
power supply
Retransmission
output
Alarm function
Alarm 1 Alarm 2 Alarm 3 Alarm 4
1716
Current or pulse
terminals and
Relay
terminals
, and
2 31
Current
*3
terminals
and
1514
Current
*1
terminals
and
1716
Current
*2
terminals
and
4746
Terminal Parameter Function
Analog signal Contact signal Front panel key
Legend
Analog input range conversion
Analog input bias
Square root extraction
Analog input filter
Analog input range conversion
Analog input bias
Square root extraction
Analog input filter
10-seg. linearizer approx./bias
PV input bias
PV input filter
OUTPUT3
Current
terminals
and
1514
*1: Unavailable when heating-side output is current or pulse.
*2: Unavailable for dual-loop controller.
*3: Unavailable when cooling-side output is current or pulse.
*4: Alarm 4 is output via DO4 when cooling-side output is relay.
Alarm 3 is output via DO3 when cooling-side output is transistor.

YOKOGAWA UT750 Specifications

General

Brand	YOKOGAWA
Model	UT750
Category	Controller
Language	English