Ogden ETR-8300, Инструкция по эксплуатации

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3 9 Deviation Alarm 3 9 Deviation Alarm
A1FN = DE.HI, A1MD = NORM, SP1 = 100, A1DV=10, A1HY=4 A1FN = DE.HI, A1MD = NORM, SP1 = 100, A1DV=10, A1HY=4
A1FN = DE.HI, A1MD = LTCH, SP1 = 100, A1DV=10, A1HY=4 A1FN = DE.HI, A1MD = LTCH, SP1 = 100, A1DV=10, A1HY=4
A1HY = DE.LO, A1MD = HOLD, SP1 = 100, A1DV= -10, A1HY=4 A1HY = DE.LO, A1MD = HOLD, SP1 = 100, A1DV= -10, A1HY=4
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88 88 88 88
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100
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ON
ON
ON
OFF
OFF
Process proceeds Process proceeds
Process proceeds Process proceeds
Process proceeds Process proceeds
Process proceeds Process proceeds
Examples:
Figure 3.9
Normal Deviation Alarm Figure 3.9
Normal Deviation Alarm
Figure 3.10
Latching Deviation Alarm Figure 3.10
Latching Deviation Alarm
Figure 3.11 Holding
Deviation Alarm Figure 3.11 Holding
Deviation Alarm
2 Types of Deviation Alarms :
DE.HI, DE.LO 2 Types of Deviation Alarms :
DE.HI, DE.LO
Deviation Alarm 1
Setup : A1FN, A1MD
Adjust : SP1, A1DV, A1HY
Trigger levels=SP1+A1DV±1/2A1HY Deviation Alarm 1
Setup : A1FN, A1MD
Adjust : SP1, A1DV, A1HY
Trigger levels=SP1+A1DV±1/2A1HY
Deviation Alarm 2 :
Setup : OUT2, A2FN, A2MD
Adjust : SP1, A2DV, A2HY
Trigger levels=SP1+A2DV±1/2A2HY Deviation Alarm 2 :
Setup : OUT2, A2FN, A2MD
Adjust : SP1, A2DV, A2HY
Trigger levels=SP1+A2DV±1/2A2HY
A deviation alarm alerts the user when the process deviates too far from set
point. The user can enter a positive or negative deviation value ( A1DV, A2DV )
for alarm 1 and alarm 2. A hysteresis value ( A1HY or A2HY ) can be selected to
avoid interference of an alarm in a noisy environment. Normally, A1HY
and A2HY can be set with a minimum ( 0.1 ) value.
Trigger levels of this alarm move with set point.
For alarm 1, Trigger levels=SP1+A1DV±1/2 A1HY.
For alarm 2, Trigger levels=SP1+A2DV±1/2 A2HY.
A1SP and/or A2SP are hidden if alarm 1 and/or alarm 2 are set with deviation
alarm. One of 4 kinds of alarm modes can be selected for alarm 1 and alarm 2.
These are: Normal alarm, Latching alarm, Holding alarm and Latching/Holding
alarm. See
for descriptions of these alarm modes. Section 3-8
A deviation alarm alerts the user when the process deviates too far from set
point. The user can enter a positive or negative deviation value ( A1DV, A2DV )
for alarm 1 and alarm 2. A hysteresis value ( A1HY or A2HY ) can be selected to
avoid interference of an alarm in a noisy environment. Normally, A1HY
and A2HY can be set with a minimum ( 0.1 ) value.
Trigger levels of this alarm move with set point.
For alarm 1, Trigger levels=SP1+A1DV±1/2 A1HY.
For alarm 2, Trigger levels=SP1+A2DV±1/2 A2HY.
A1SP and/or A2SP are hidden if alarm 1 and/or alarm 2 are set with deviation
alarm. One of 4 kinds of alarm modes can be selected for alarm 1 and alarm 2.
These are: Normal alarm, Latching alarm, Holding alarm and Latching/Holding
alarm. See
for descriptions of these alarm modes. Section 3-8
A1HY= DE.LO, A1MD = LT.HO, SP1 = 100, A1DV= -10, A1HY=4 A1HY= DE.LO, A1MD = LT.HO, SP1 = 100, A1DV= -10, A1HY=4
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100 100
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92 92 92
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88
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88
ON
Figure 3.12
Latching /Holding
Deviation Alarm Figure 3.12
Latching /Holding
Deviation Alarm
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