Omron E5AZ User Manual

40
Alarm Outputs Section 3-9
• When P (proportional band) is adjusted
• When I (integral time) is adjusted
• When D (derivative time) is adjusted
3-9 Alarm Outputs
• Alarm output conditions are determined by a combination of the “alarm
type”, “alarm value” and “alarm hysteresis” parameters. For details, refer
to 4-2 Alarm Hysteresis.
• The following describes the “alarm type”, “alarm value”, “upper-limit
alarm” and “lower-limit alarm” parameters.
When P is increased The curve rises gradually, and
a long stable time is achieved,
preventing overshoot.
When P is
decreased
Overshoot and hunting occur,
however the set point is
quickly reached after which
the curve stabilizes.
When I is increased It takes a long time for the pro-
cess value to reach the set
point. It takes time to achieve
a stable state, however there
is little overshoot/undershoot
and hunting.
When I is decreased Overshoot/undershoot and
hunting occur, and the curve
rises quickly.
When D is increased Overshoot/undershoot and
stable time are reduced, how-
ever, fine hunting occurs on
changes in the curve itself.
When D is
decreased
Overshoot/undershoot
increase, and it takes time for
the process value to reach the
set point.
Set
Value
Set
Value
Set
Value
Set
Value
Set
Value
Set
Value

Omron E5AZ Specifications

General

Brand	Omron
Model	E5AZ
Category	Temperature Controller
Language	English