Omron E5ZN Operation Manual page 48

Alarm Outputs
Alarm 3
34
2. Operation for set value 1 (upper and lower limit alarms) would be as follows:
Case 1 Case 2
L L
H SP
SP
H < 0, L > 0 H > 0, L < 0
|H| < |L| |H| > |L|
3. Operation for set value 4 (upper and lower limit ranges) would be as follows:
Case 1 Case 2
SP L
L H SP
H < 0, L > 0 H > 0, L < 0
4. Set value 5 (upper and lower limit alarms with standby sequence):
For upper and lower limit alarm cases in the above diagram, hysteresis is always
OFF for cases 1 and 2 if the upper and lower limits overlap. Hysteresis is always
OFF for case 3.
5. Set value 5 (upper and lower limit alarms with standby sequence):
Hysteresis is always OFF if the upper and lower limits overlap.
6. Refer to 4-2 Alarm Hysteresis for information on standby sequences.
Set value Alarm type
0 Alarm function OFF
1 upper and lower limit (devia-
tion)
2 Upper limit (deviation)
3 Lower limit (deviation)
4 Upper and lower limit range
(deviation)
5 Upper and lower limit alarm
with standby sequence (devi-
ation)
6 Upper limit alarm with
standby sequence (deviation)
7 Lower limit alarm with
standby sequence (deviation)
Case 3
H H L
SP
H L
SP
H L
SP
Case 3
H
H SP L
H L SP
SP H
Alarm output operation
When alarm value
X is positive
Output OFF
X X
ON
OFF
ON
OFF
X
ON
OFF
SP
X X
ON
OFF
X X
ON
OFF
ON
OFF
X
ON
OFF
SP
Section 3-8
H < 0, L < 0
H < 0, L > 0
|H| > |L|
H > 0, L < 0
|H| < |L|
H < 0, L < 0
H < 0, L > 0
|H| > |L|
H > 0, L < 0
|H| < |L|
L
When alarm value
X is negative
Always ON.
SP
X
X
ON
OFF
SP SP
X
ON
OFF
SP
Always OFF.
SP
Always OFF.
SP
X
X
ON
OFF
SP SP
X
ON
OFF
SP