Omron E5CSV User Manual

3.7 Determining PID Constants (AT, ST, Manual Setup)
3-13
Basic
Operations
• When P (Proportional Band) Is Adjusted
Increas-
ing P
The curve rises gradually, and a
long stabilization time is created,
but overshooting is prevented.
De-
creas
ing P
Overshooting and hunting occur,
but the set value is quickly reached
and the temperature stabilizes.
• When I (Integral Time) Is Adjusted
Increas-
ing I
It takes a long time to reach the
set point.
It takes time to achieve a stable
state, but overshooting,
undershooting, and hunting are
reduced.
De-
creas-
ing I
Overshooting and
undershooting occur.
Hunting occurs.
The Controller starts up faster.
• When D (Derivative Time) Is Adjusted
In-
creas-
ing D
Overshooting, undershooting, and
stabilization times are reduced,
but fine hunting occurs on
changes in the curve itself.
De-
creas-
ing D
Overshooting and undershooting
increase, and it takes time to
return to the set point.
Set value
Set value Set value Set value
Set value
Set value

Omron E5CSV Specifications

General

Setting Method	Digital setting using front panel keys
Dimensions	48 x 48 x 78 mm (W x H x D)
Number of Control Outputs	1
Control Method	ON/OFF control or PID control
Input Types	Thermocouple
Supply Voltage	100 to 240 VAC
Output Type	Relay or Voltage (for driving SSR)
Display	7-segment digital display
Mounting Method	Panel mounting
Setting Resolution	0.1 °C or 1 °C
Power Supply Voltage	100 to 240 VAC
Ambient Operating Humidity	25% to 85% RH
Ambient Operating Temperature	-10 to 55°C (with no icing or condensation)