Omron E5AN-H User Manual page 89

Alarm Outputs
Note
68
Set value Alarm type
11 Absolute-value lower-limit
with standby sequence
12 LBA (alarm 1 type only)
13 PV change rate alarm
14 Remote SP absolute
value upper limit (See
note 6.)
15 Remote SP absolute
value lower limit (See
note 6.)
(1) With set values 1, 4, and 5, the upper- and lower-limit values can be set
independently for each alarm type, and are expressed as "L" and "H."
(2) Set value: 1 (Upper- and lower-limit alarm)
Case 1 Case 2
SP L H
L H SP
H < 0, L > 0 H > 0, L < 0
|H| < |L| |H| > |L|
(3) Set value: 4 (Lower limit range)
Case 1 Case 2
L H SP
SP L H
H < 0, L > 0
H > 0, L < 0
|H| < |L| |H| > |L|
(4) Set value: 5 (Upper- and lower-limit with standby sequence)
• For the lower-limit alarms in cases 1 and 2 above, the alarm is always
OFF if upper- and lower-limit hysteresis overlaps.
• In case 3, the alarm is always OFF.
(5) Set value: 5 (Upper- and lower-limit with standby sequence)
• The alarm is always OFF if upper- and lower-limit hysteresis overlaps.
(6) Displayed when remote SP input is used.
• Set the alarm type independently for each alarm in the Alarm 1 to 3 Type
parameters in the initial setting level. The default is 2 (Upper-limit alarm).
Alarm output operation
When alarm value X
is positive
X
ON
OFF
0
---
---
X
ON
OFF
0
X
ON
OFF
0
Case 3 (Always ON)
H < 0, L < 0
H SP L
H < 0, L > 0
|H| ≥ |L|
H L SP
H > 0, L < 0
|H| ≤ |L|
SP H L
Case 3 (Always OFF)
H < 0, L < 0
H SP L
H < 0, L > 0
|H| ≥ |L|
H L SP
H > 0, L < 0
|H| ≤ |L|
SP H L
Section 3-9
When alarm value X
is negative
X
ON
OFF
0
X
ON
OFF
0
X
ON
OFF
0