27
Character Name, Function, Setting range Default value
A3 value 0
• Sets the action point of Alarm 3 (A3) output.
• Setting the value to 0 or 0.0 disables the function (except Process
high and Process low alarm).
• Not available if SA option (A3, A4 output) is not added, or if [
] is
selected during Alarm 3 type selection even if SA option is added.
• Setting range: Refer to (Table 6.2.2-1).
A4 value 0
• Sets the action point of Alarm 4 (A4) output.
• Setting the value to 0 or 0.0 disables the function (except Process
high and Process low alarm).
• Not available if SA option (A3, A4 output) is not added, or if [
] is
selected during Alarm 4 type selection even if SA option is added.
• Setting range: Refer to (Table 6.2.2-1).
xx.x
(xx.x:
Heater
current
value)
Heater burnout alarm value 0.0A
• Sets the heater current value for Heater burnout alarm.
• Setting the value to 0.0 disables the function.
• Available only when Heater burnout alarm (W, W3 option) is added
• It is recommended to set approx. 80% of the heater current value (set
value) considering the voltage fluctuation.
• Upon returning to set limits, the alarm will stop.
• Setting range:
Rated current 20A: 0.0 to 20.0A (Indication: 0.0 to 50.0)
Rated current 50A: 0.0 to 50.0A
Loop break alarm time 0 min
• Sets the time to assess the Loop break alarm.
• Available only when Loop break alarm (LA option) is added
• Setting range: 0 to 200 minutes
Loop break alarm span 0
• Sets the span to assess the Loop break alarm.
• Available only when Loop break alarm (LA option) is added
• Setting range:
Thermocouple, RTD without decimal point: 0 to 150
Thermocouple, RTD with decimal point: 0.0 to 150.0
DC input: 0 to 1500 (The placement of the decimal point follows the
selection.)
[Loop break alarm]
The alarm will be activated when the PV does not rise as much as the span or more
within the time it takes to assess the loop break alarm after the MV has reached 100% or
the output high limit value.
The alarm will also be activated when the PV does not fall as much value as the span or
more within the time it takes to assess loop break alarm after the MV has reached 0% or
the output low limit value.
When the control action is Direct (Cooling), read “fall” for “rise” and vice versa.
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