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4 Basic Operation
E5@C Digital Temperature Controllers User’s Manual (H174)
4-10 Alarm Outputs
4
4-10-2 Alarm Values
*9 When heating/cooling control is performed, the MV absolute-value upper-limit alarm functions only for
the heating operation and the MV absolute-value lower-limit alarm functions only for the cooling
operation.
*10 This value is displayed only when a remote SP input is used. It functions in both Local SP Mode and
Remote SP Mode.
This procedure sets alarm 1 as an upper-limit alarm. The alarm is output when the process value (PV)
exceeds the set point (SP) by 10°C. (In this example, the temperature unit is °C.)
Alarm 1 type = 2 (Upper-limit alarm)
Alarm value 1= 10
4-10-2 Alarm Values
• Alarm values are indicated by “X” in the table on the previous page. When the
upper and lower limits are set independently, “H” is displayed for upper limit
values, and “L” is displayed for lower limit values.
• To set the alarm value upper and lower limits for deviation, set the upper and
lower limits in each of the Alarm 1 to 4 Upper Limit, and Alarm 1 to 4 Lower
Limit parameters in the Operation Level.
Operating Procedure
• Selecting the Alarm 1 Type
1
Press the M Key several times in the Initial Setting Level to
display alt1 (Alarm 1 Type).*
Initial Setting Level
2
Press the U or D Key to set the set value to 2.
The default is 2 (upper-limit alarm).
2
alt1
2
alt1
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