Mitsubishi Electric MELSEC iQ-R Series User Manual page 34

Application examples of rate alarms
A rate alarm serves to monitor the change of a measured temperature value in a limited range as shown below.
Ex.
To monitor that an increase rate of a measured temperature value is within the specified range
Change of the measured
temperature value (­)
+30­
+20­
0
Ex.
To monitor that a decrease rate of a measured temperature value is within the specified range
Change of the measured
temperature value (­)
0
-20­
-30­
Ex.
To monitor that a change rate of a measured temperature value is within the specified range
Change of the measured
temperature value (­)
+10­
0
-10­
1 FUNCTIONS
32
1.6 Alert Output Function
Rate alarm upper limit value
Rate alarm lower limit value
Rate alarm upper limit value
Rate alarm lower limit value
Rate alarm upper limit value
Rate alarm lower limit value
Time
Time
Time