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Character,
Factory Default
Setting Item, Function, Setting Range
EV4 alarm delay time
• Sets EV4 alarm action delay time.
When setting time has elapsed after PV enters the alarm output range, the
alarm is activated.
• Setting range:
0 to 10000 seconds
Available when 001 to 012 (Alarm output) is selected in [Event output EV4 allocation].
EV4 alarm Energized/De-energized
• Selects Energized/De-energized status for EV4 alarm.
When Energized is selected, Event output EV4 is conductive (ON) while the
EV4 indicator is lit. Event output EV4 is not conductive (OFF) while the EV4
indicator is not lit.
When De-energized is selected, Event output EV4 is not conductive (OFF)
while the EV4 indicator is lit. Event output EV4 is conductive (ON) while the
EV4 indicator is not lit.
High limit alarm (Energized)
High limit alarm (De-energized)
(Fig. 7.5.3-19)
(Fig. 7.5.3-20)
• Selection item:
: Energized
: De-energized
Available when 001 to 012 (Alarm output) is selected in [Event output EV4 allocation].
Loop break alarm time
• Sets the time to assess the Loop break alarm.
[About Loop break alarm]
When the control action is Reverse (Heating) control:
If the PV does not reach the Loop break alarm span setting within the time
allotted to assess the Loop break alarm (after the MV has reached 100% or
the OUT1 high limit value), the alarm will be activated.
Likewise, if the PV does not drop to the Loop break alarm span setting within
the time allotted to assess the Loop break alarm (after the MV has reached
0% or the OUT1 low limit value), the alarm will be activated.
When the control action is Direct (Cooling) control:
If the PV does not drop to the Loop break alarm span setting within the time
allotted to assess the Loop break alarm (after the MV has reached 100% or
the OUT1 high limit value), the alarm will be activated.
Likewise, if the PV does not reach the Loop break alarm span setting within
the time allotted to assess the Loop break alarm (after the MV has reached
0% or the OUT1 low limit value), the alarm will be activated.
• Setting range:
0 to 200 minutes
[Setting to 0 (zero) disables the Loop break alarm.]
Available when 014 (Loop break alarm output) is selected in [Event output EV4
allocation].
ON
EV4 hysteresis
OFF
SV
+EV4 value
ON
EV4 hysteresis
OFF
SV
+EV4 value
