3 Part Names and Basic Procedures
3 - 20
E5@C-T Digital Temperature Controllers User’s Manual (H185)
8 Absolute-value
upper-limit
alarm
The alarm output is ON while the
PV is equal to or higher than the
alarm value.
9 Absolute-value
lower-limit
alarm
The alarm output is ON while the
PV is equal to or lower than the
alarm value.
10 Absolute-value
upper-limit
alarm with
standby
sequence
This alarm provides a standby
sequence.
The alarm output is ON while the
PV is equal to or higher than the
alarm value.
11 Absolute-value
lower-limit
alarm with
standby
sequence
This alarm provides a standby
sequence.
The alarm output is ON while the
PV is equal to or lower than the
alarm value.
12 Loop Burnout
Alarm (LBA)
(Valid only for
alarm 1 on a
Standard
Model.)
The alarm output turns ON when
the control loop is broken.
There is assumed to be a loop burnout alarm if
the control deviation (SP − PV) is greater than
the threshold set in the LBA Level parameter
and if the PV is not reduced by at least the
value set in the LBA Band parameter within a
specific period of time. The LBA detection time
and LBA band are set in parameters.
Alarm
type No.
Alarm type Description Operation
ON
OFF
0
Temperature
Upper-limit alarm
point (e.g., 100°C)
Alarm value (e.g., 100°C)
Example:
ON
OFF
0
Temperature
Lower-limit alarm
point (e.g., 100°C)
Example:
Alarm value (e.g., 100°C)
ON
OFF
0
Temperature
Upper-limit alarm
point (e.g., 100°C)
Alarm value (e.g., 100°C)
Example:
ON
OFF
0
Temperature
Lower-limit alarm
point (e.g., 100°C)
Example:
Alarm value (e.g., 100°C)
ON
SP
MV
LBA Alarm Output
PV
100%
0%
OFF Time
Time
Time
LBA detection time
LBA band
LBA level
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