Alert Function - Mitsubishi Electric NZ2GF2B-60TCTT4 User Manual

8.3.11

Alert function

When the temperature process value (PV) or deviation (E) reaches the value set in advance, the system is set in an
alert status. Use this function to activate danger signals of devices or safety devices.
The alert function is classified into input alerts and deviation alerts depending on the setting of the alert mode.
• Input alert: upper limit input alert, lower limit input alert (Page 169, Section 8.3.11 (1))
• Deviation alert: upper limit deviation alert, lower limit deviation alert, upper lower limit deviation alert, within-
range alert (Page 170, Section 8.3.11 (2))
(1) Input alert
With the upper limit input alert, when the temperature process value (PV) is equal to or greater than the alert set
value, the system is put in an alert status.
With the lower limit input alert, when the temperature process value (PV) is equal to or less than the alert set
value, the system is put in an alert status.
Upper limit input alert
Temperature process value (PV)
Alert set value
Alert status
(a) Setting method
Set the alert mode. (Page 176, Section 8.3.11 (6))
• Upper limit input alert: Set the alert mode to "1: Upper limit input alert".
• Lower limit input alert: Set the alert mode to "2: Lower limit input alert".
Time
Non-alert status Alert status
Lower limit input alert
Temperature process value (PV)
Alert set value
Alert status
Non-alert status
CHAPTER 8 FUNCTIONS
Standard Heating-cooling
Time
Alert status
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