Omron E5EZ-PRR Series Manual page 20

Ceramic Furnace Position Proportional Control
Reading the extent of the valve's opening with a potentiometer, and using open and close tuning control is referred to as position proportional con-
trol or on/ off servo control.
■ Examples of Application
Temperature Input
Analog Signal Input
PV
SP SP Ramp
PID
MV
OUT1
48
Digital Position-Proportional Controllers
When using position proportional methods to control gas combustion furnace valves, position propor-
tional control should be applied. See the following figure for measurement devices:
Potentiometer
Set Value
OUT2
E5EZ-PRR
Note:
SP
Ramp
RUN
8888
PV
8888
SV
8888
MV
MANU
A
M
Burner
The SP ramp function allows limits to be placed on temperature changes
which control the temperature within a specific range. This is useful for
ceramic furnace, in which severe temperature changes may cause dam-
age or corruption.
E5EZ-PRR
SP ramp's set
value
SP ramp as time unit
Time
Temperature
Sensor