YOKOGAWA UP35A, Руководство пользователя

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13-1
IM 05P02D41-01EN
Display
, Key
, and Security Functions
13
13.1 Setting Display Functions
13.1.1 Setting Active Color PV Display Function
The active color PV display function changes the PV display color when an event occurs.
Description
Link to Alarm
The PV display color changes by linking to the alarm 1 or alarm 2.
The following is an example of operation linking to alarm 1.
Set the alarm-1 type to “PV high limit alarm” and alarm-1 setpoint to “80°C.”
When the active color PV display switch is set to”2,” PV display color changes from white
to red if PV exceeds the alarm-1 setpoint.
The red-to-white switching action can be set.
°C
Time
PV color: red PV color: white PV color: white
Alarm-1 setpoint
A1 = 80 °C
PV
75 °C
Alarm-1 hysteresis
Change by Deviation
The PV display color changes by deviation (PV – SP).
Set the PV color change high limit to “10°C” and the PV color change low limit to “5°C”
as deviation band for the current target setpoint “50°C.” PV display color changes from
white to red if PV is out of the deviation.
The red-to-white switching action can be set. There is no hysteresis.
°C
Time
Target setpoint
SP = 50 °C
60 °C
45 °C
PV
PV color: red PV color: red PV color: red
PV color: white
PV color: white
Parameter “PCH” (PV color change high limit) = 10 °C
Parameter “PCL” (PV color change low limit) = 5 °C
Chapter 13 Display, Key, and Security Functions