Alarm Types - Omron E5CN-HT User Manual

Alarm Outputs
3-9-1

Alarm Types

Set value Alarm type
0 Alarm function OFF
1 Upper- and lower-limit
(See note 1.)
2 Upper-limit
3 Lower-limit
4 Upper- and lower-limit
range (See note 1.)
5 Upper- and lower-limit
with standby sequence
(See note 1.)
6 Upper-limit with standby
sequence
7 Lower-limit with standby
sequence
8 Absolute-value upper-
limit
9 Absolute-value lower-limit
10 Absolute-value upper-
limit with standby
sequence
11 Absolute-value lower-limit
with standby sequence
12 LBA (alarm 1 type only)
13 PV change rate alarm
72
• This section describes the Alarm Type, Alarm Value, Upper-limit Alarm
and Lower-limit Alarm parameters.
Alarm output operation
When alarm value X When alarm value X
is positive
Output OFF
See note 2.
L H
ON
OFF
SP
X
ON ON
OFF OFF
SP
X
ON ON
OFF OFF
SP
See note 3.
L H
ON
OFF
SP
See note 4.
L H
ON
OFF
SP
See note 5.
X
ON
ON
OFF
OFF
SP
X
ON ON
OFF OFF
SP
X
ON
ON
OFF
OFF
0
X
ON
ON
OFF
OFF
0
X
ON
ON
OFF
OFF
0
X
ON
ON
OFF
OFF
0
---
---
is negative
No alarm function.
The positive deviation in the SP is
set using the alarm upper limit (H)
and the negative deviation is set
using the alarm lower limit (L).
The alarm is ON when the PV is
outside this deviation range.
The alarm value (X) is set as a
X
positive deviation in the SP.
SP
The alarm is ON when the PV is
higher than the SP by the deviation
or more.
The alarm value (X) is set as a
X
negative deviation in the SP.
SP
The alarm is ON when the PV is
lower than the SP by the deviation
or more.
The positive deviation in the SP is
set using the alarm upper limit (H)
and the negative deviation is set
using the alarm lower limit (L).
The alarm is ON when the PV is
inside this deviation range.
This alarm type adds a standby
sequence to alarm type 1 (upper-
and lower-limit alarm). (See note
7.)
This alarm type adds a standby
X
sequence to alarm type 2 (upper-
SP
limit alarm). (See note 7.)
This alarm type adds a standby
X
sequence to alarm type 3 (lower-
SP
limit alarm). (See note 7.)
This alarm type turns ON the
X
alarm when the PV is higher than
0
the alarm value (X), regardless of
the value of the SP.
This alarm type turns ON the
X
alarm when the PV is lower than
0
the alarm value (X), regardless of
the value of the SP.
This alarm type adds a standby
X
sequence to alarm type 8 (abso-
0
lute-value upper-limit alarm). (See
note 7.)
This alarm type adds a standby
X
sequence to alarm type 9 (abso-
0
lute-value lower-limit alarm). (See
note 7.)
(See note 8.)
(See note 9.)
Section 3-9
Function