Mitsubishi Electric MELSEC iQ-R Series User Manual page 30

In addition, when Normal (0) is stored in all the bits of 'Alert output flag (Process alarm upper limit)' (Un\G36) and 'Alert output
flag (Process alarm lower limit)' (Un\G37), 'Alert output signal' (XD) turns off and the ALM LED turns off. However, the alarm
code stored in 'Latest alarm code' (Un\G2) is not cleared. Turn on and off 'Error clear request' (YF) to clear the alarm code.
Detection cycle
When time average is specified, the function works at every interval of the time (for averaging). When count average is
specified, the function works at every count (for averaging).
When the sampling processing, moving average, and primary delay filter is specified, this function works at every sampling
cycle.
Detection target for outputting an alert
'CH1 Measured temperature value' (Un\G400) is a target for outputting an alert. The target is the same for when the scaling
function is enabled.
Operation performed when disconnection is detected
At disconnection detection, a process alarm may occurs as well because 'CH1 Measured temperature value' (Un\G400)
changes according to 'CH1 Conversion setting at disconnection detection' (Un\G531).
Setting procedure
1.
Set "Warning output setting (Process alarm)" to "Enable".
[Navigation window]  [Parameter]  [Module Information]  Module model name  [Application setting]  [Warning
output function (Process alarm)]
2.
Set values for "Process alarm upper upper limit value", "Process alarm upper lower limit value", "Process alarm lower
upper limit value", and "Process alarm lower lower limit value". The setting range varies depending on a temperature
input module and input range used.
• Thermocouple input module
Item
Process alarm upper upper limit value
Process alarm upper lower limit value
Process alarm lower upper limit value
Process alarm lower lower limit value
• RTD input module
Item
Process alarm upper upper limit value
Process alarm upper lower limit value
Process alarm lower upper limit value
Process alarm lower lower limit value
Set the alert output function (process alarm) to satisfy the following condition. If a value out of the range is set,
a process alarm upper lower limit value setting range error (error code: 1BH) occurs.
Process alarm upper upper limit value  Process alarm upper lower limit value  Process alarm lower upper
limit value  Process alarm lower lower limit value
1 FUNCTIONS
28
1.6 Alert Output Function
Input range Setting range
K thermocouple -270.0 to 1370.0 ()
E thermocouple -270.0 to 1000.0 ()
J thermocouple -210.0 to 1200.0 ()
T thermocouple -270.0 to 400.0 ()
B thermocouple 0.0 to 1820.0 ()
R thermocouple -50.0 to 1760.0 ()
S thermocouple -50.0 to 1760.0 ()
N thermocouple -270.0 to 1300.0 ()
Input range
Pt100 (-200 to 850)
Pt100 (-20 to 120)
Pt100 (0 to 200)
JPt100 (-180 to 600)
JPt100 (-20 to 120)
JPt100 (0 to 200)
Ni100 (-60 to 250)
Pt50 (-200 to 650)
Accuracy guaranteed range
-200.0 to 1200.0 ()
-200.0 to 900.0 ()
-40.0 to 750.0 ()
-200.0 to 350.0 ()
600.0 to 1700.0 ()
0.0 to 1600.0 ()
0.0 to 1600.0 ()
-200.0 to 1250.0 ()
Setting range
200.0 to 850.0 ()
20.0 to 120.0 ()
0.0 to 200.0 ()
180.0 to 600.0 ()
20.0 to 120.0 ()
0.0 to 200.0 ()
60.0 to 250.0 ()
200.0 to 650.0 ()