YOKOGAWA UT55A - Page 81

6-16
IM 05P01C31-01EN
(Continued)
OperationDisplay Display and operation description
Heating/cooling
OUTDisplay
PVdisplay:Displaysmeasuredinputvalue(PV).
Setpoint display: Displays heating-side and cooling-side control output
value and changes control output value in MAN mode.
Symbol of cooling side
Target setpoint (SP) number
Symbol of
heating side
Heating-side
control output
Cooling-side control output
Whenthecontroloutputvalueislessthan100%,onedigitisdisplayed
to the right of the decimal point. When the control output value is equal
toormorethan100%,nodigitsaredisplayedtotherightofthedecimal
point.
The display is switched to the Heating/cooling OUT Display if the
operation mode is switched to MAN when other Operation Display is
shown.
An interruption is displayed while auto-tuning is performed.
[OUTChangeOperation]
In MAN mode (MAN lamp is lit) pressing the Up arrow key causes the
cooling-side output to decrease, and the heating-side output to increase.
Pressing the Down arrow key causes the cooling-side output to increase,
and the heating-side output to decrease.
The control output value is changed by direct operation (without pressing
the SET/ENTER key), and cannot be changed by moving between digits
using the Left and Right arrow keys.
When in STOP mode (STOP lamp is lit):
Target setpoint (SP) number
Symbol of STOP
Heating-side
preset output
Cooling-side preset output
Cooling-side symbol
Heating-side or cooling-side preset output value is displayed in STOP
mode.
Preset output values cannot be changed by OUT change operation.
Loop-2 output value is always displayed in Cascade control.
6.1MonitoringandControlofOperationDisplays