Section 4 Operations for Applications 
4-8 
 
Operations for 
Applications 
4.5  Alarm
 Delays
 
•   
■  Alarm Delays 
•  Delays can be set for the alarm outputs. ON and OFF delays can be 
set separately for alarms 1 and 2. The ON and OFF delays for 
alarms 1 and 2 also apply to the individual ALM1 and ALM2 
indicators. The alarm ON delays will also function when the power is 
turned ON.   
 
● Operation of Alarm ON and OFF Delays (for an Upper-limit Alarm) 
 
 
 
 
 
 
 
 
 
 
 
•  The alarm will not turn ON if the time that the alarm is ON is equal to 
or less than the ON delay set time. Also, the alarm will not turn OFF 
if the time that the alarm is OFF is equal to or less than the OFF 
delay set time.   
 
•  If an alarm turns OFF and then back ON during the ON delay time, 
the time will be remeasured from the last time the alarm turns ON. 
Also, if an alarm turns ON and then back OFF during the OFF delay 
time, the time will be remeasured from the last time the alarm turns 
OFF. 
 
 
Alarm status
PV 
Alarm 
setting 
ON delay 
set time 
OFF delay 
set time 
Alarm latch = OFF 
Alarm will not turn 
ON. 
Alarm hysteresis 
ON delay 
set time