Mitsubishi Electric MELSEC iQ-R Series User Manual page 83

Setting of the number of alert delay
Set the number of times to execute sampling to judge an alert. By setting the number of times to execute sampling, when the
temperature process value (PV) stays within the alert range after the temperature process value (PV) has reached the alert
set value until the number of times to execute sampling exceeds the number of alert delay, an alert occurs.
■Setting method
Configure the setting as follows:
[Navigation window]  [Parameter]  Target module  [Application Setting]  [Alert setting]  [Number of alert delay]
Ex.
When the alert mode has been set to "Upper Limit Input Alert"
When 5 (times) is set as the number of alert delay, the system does not issue an alert when the number of times to execute
sampling is 4 times or less.
Temperature process value (PV)
Alert set value
Set value (SV)
Sampling count
Alert status
Alert mode and related settings
The following table shows the alert modes and the related settings described in this section.
Enabled or used: , Disabled or not used: 
Alert
Input alert Upper limit input alert
Lower limit input alert
Deviation alert Upper limit deviation alert
Upper limit deviation alert
(use set value (SV) setting
value)
Lower limit deviation alert
Lower limit deviation alert
(use set value (SV) setting
value)
Upper/lower limit deviation
alert
Upper/lower limit deviation
alert (use set value (SV)
setting value)
Within-range alert
Within-range alert (use set
value (SV) setting value)
5 times
3 times
Non-alert status
Alert dead band Number of alert
setting delay
 
 
 
 
 
 
 
 
 
 
Time
Alert status
Alert with wait










1.25 Alert Function
1
Alert with re-wait










1 FUNCTIONS
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