Omron E5*D series User Manual page 136

4 Basic Operation
 SP Alarms
You can set an SP absolute-value upper-limit or SP absolute-value lower-limit alarm for the set point
(SP).
The alarm point is set in the corresponding alarm value parameter. The Alarm SP Selection
parameter is used to specify the alarm for either the ramp SP or the target SP.
The corresponding alarm hysteresis setting is also valid.
SP absolute-value upper-limit alarm
Example:
ON
OFF
The alarm output is ON while the SP is equal to or
higher than the set value.
 MV Alarms
You can set an MV absolute-value upper-limit or MV absolute-value lower-limit alarm for the
manipulated value (MV).
The alarm point is set in the corresponding alarm value parameter. The corresponding alarm
hysteresis setting is also valid.
MV absolute-value upper-limit alarm
Example for Standard Control:
ON
OFF
The alarm output is ON while the MV is equal to or
higher than the set value.
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0
Upper-limit alarm
point (e.g., 100°C)
Alarm value (e.g., 100°C)
0
Upper-limit alarm
point (e.g., 80%)
Alarm value (e.g., 80%)
SP absolute-value lower-limit alarm
Example:
ON
SP OFF
0
The alarm output is ON while the SP is equal to or
lower than the set value.
MV absolute-value lower-limit alarm
Example for Standard Control:
ON
MV OFF
0
Alarm value (e.g., 20%)
The alarm output is ON while the MV is equal to or
lower than the set value.
E5@D Digital Temperature Controllers User's Manual (H224)
SP
Lower-limit alarm
point (e.g., 100°C)
Alarm value (e.g., 100°C)
MV
Lower-limit alarm
point (e.g., 20%)