Omron E5AZ, User Manual

Page: 70 / 208

47
Alarm Outputs
Section 3-9
When I (Integral Time) Is Adjusted
When D (Derivative Time) Is Adjusted
3-9 Alarm Outputs
• Alarms can be used by the E5CZ-
@
2M
@@
(2 alarm outputs), E5AZ/EZ-
@ 3 @@@@ (3 alarm outputs), or the E5CZ- @ 2T @ U (2 alarm outputs).
Alarm outputs are determined by a combination of “alarm type,” “alarm
value,” and “alarm hysteresis” alarm output conditions. For details, refer
to
4-2 Alarm Hysteresis .
• This section describes the “alarm type,” “alarm value,” “upper-limit alarm”
and “lower-limit alarm” parameters.
3-9-1 Alarm Types
Increased 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.
Decreased Overshooting and undershooting
occur.
Hunting occurs.
The Controller starts up faster.
Increased Overshooting, undershooting, and sta-
bilization times are reduced, but fine
hunting occurs on changes in the curve
itself.
Decreased Overshooting and undershooting
increase, and it takes time to return to
the set point.
Set
value
Set
value
Set
value
Set
value
Set value Alarm type Alarm output operation
When alarm value
X is positive
When alarm value
X is negative
0 Alarm function OFF Output OFF
1(See note
1.)
Upper- and lower-limit See note 2.
2 Upper-limit
3 Lower-limit
4 (See note
1.) Upper- and lower-limit
range See note 3.
5 (See note
1.) Upper- and lower-limit
with standby sequence See note 4.
6 Upper-limit with standby
sequence
7 Lower-limit with standby
sequence
L H
ON
OFF
SP
X
ON
OFF
SP
ON
OFF
SP
X
X
ON
OFF
SP
X
ON
OFF
SP
L H
ON
OFF
SP
L H
ON
OFF
SP
See note 5.
X
ON
OFF
SP
ON
OFF
SP
X
X
ON
OFF
SP
X
ON
OFF
SP