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REVO RT
from 35A to 90A
User’s manual
10.4 Alarms
P163 - Alarm 1 function (Address ModBus 2163)
P177 - Alarm 2 function (Address ModBus 2177)
P191 - Alarm 3 function (Address ModBus 2191)
P177 - Alarm 4 function (Address ModBus 2177)
NOTE: Alarm 4 is the AND condition of the 3 zones with the alarm configured
Example: If Alarm 4 is configured as "Absolute Low", if all three variables are lower than the Alarm 4 threshold, then the alarm
is activated.
PV = Process variable
SP = Regulation SetPoint
AL = Alarm Threshold
AL_L = Alarm threshold low for asymmetrical alarm
AL_H = Alarm threshold high for asymmetrical alarm
Select Alarm Type 1.
0 Disabled (
Default
)
1 Absolute of high. Absolute referred to PV, active when PV exceeds threshold
2 Absolute of low. Absolute referred to PV, active when PV below threshold
3 Band alarm (SP ± alarm setpoint)
4 Asymmetrical band Alarm ( SP + AL_H and SP - AL_L)
5 High deviation. Deviation alarm, active when PV exceeds SP + AL
6 Low deviation. Deviation alarm, active when PV goes below SP - AL
7 Absolute on high of SP. Absolute on SP, active when SP higher than threshold
8 Absolute of low SP. Absolute referred to SP, active when SP lower than threshold
1
2
3
4
5
6
7
8
PV
In alarm
Time
AL
PV
In alarm
Time
AL
PV
In allarme
In alarm
Time
+AL
-AL
SP
PV In alarm
In alarm
Time
AL_H
AL_L
SP
PV
In alarm
Time
AL
SP
Absolut on High
SP
In alarm
Time
AL
Absolut on high SP
High deviation
PV
In alarm
Time
AL
SP
Low deviation
Asymmetric band
Absolut on Low
SP
In alarm
Time
AL
Absolut on low SP
Band
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