Mitsubishi Electric MELSEC iQ-R Series User Manual page 76

■Upper limit deviation alert
When the deviation (E) is equal to or greater than the alert set value, the system issues a deviation alert.
When the alert set value is positive
Temperature process value (PV)
Set value
*1
(SV)
Deviation (E)
(= Temperature process value (PV) - set value (SV)
Alert set value
0
Alert status
*1 Depending on the set alert mode, this value becomes the set value or the monitored value. The setting range of the alert set value is (-
(Full scale of the input range)) to the full scale of the input range. ( Page 73 Setting the set value (SV) and the setting variation rate
limiter)
■Lower limit deviation alert
When the deviation (E) is equal to or smaller than the alert set value, the system issues a deviation alert.
When the alert set value is positive
Temperature process value (PV)
Set value
*1
(SV)
Deviation (E)
(= Temperature process value (PV) - set value (SV)
Alert set value
0
Alert status
*1 Depending on the set alert mode, this value becomes the set value or the monitored value. The setting range of the alert set value is (-
(Full scale of the input range)) to the full scale of the input range. ( Page 73 Setting the set value (SV) and the setting variation rate
limiter)
1 FUNCTIONS
74
1.25 Alert Function
Time
*1
)
Time
Non-alert status Alert status
Time
*1
)
Time
Non-alert status Alert status
When the alert set value is negative
Temperature process value (PV)
Set value
*1
(SV)
Deviation (E)
(= Temperature process value (PV) - set value (SV)
0
Alert set value
Alert status
When the alert set value is negative
Temperature process value (PV)
Set value
*1
(SV)
Deviation (E)
(= Temperature process value (PV) - set value (SV)
0
Alert set value
Alert status
Time
*1
)
Time
Non-alert status Alert status
Time
*1
)
Time
Non-alert status
Alert status