Kikusui PLZ-30F, Инструкции по эксплуатации, Страница: 55 / 192

PLZ-U Basic Operation 4-11
Fig. 4-6 Bit assignment of alarm numbers
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Determining the alarm type from the alarm number total
The alarm numbers are determined in order from the largest value.
Here we will consider the case when the total value of alarm numbers is 10.
1. From the six alarm numbers (Table 4-1), determine the largest alarm
number that does not exceed the total value of alarm numbers.
[a] Total value of alarm numbers: 10
[b] The largest alarm number that does not exceed the total value of
alarm numbers: 8
[c] Alarm number determined from [a] and [b]: 8
2. Subtract the alarm number determined in step 1 from the total value of
alarm numbers.
[a]-[c]: 10 – 8 = 2
3. Like step 1, determine the largest alarm number that does not exceed
the difference value of step 2.
[d] Difference value of step 2: 2
[e] The largest alarm number that does not exceed the difference value
of step 2: 2
[f] Alarm number determined from [d] and [e]: 2
4. Subtract the alarm number determined in step 3 from the difference
value of step 2.
[d]-[f]: 2 – 2 = 0
5. Repeat the procedure until the difference value is 0.
From [c] and [f], we conclude that alarm number 8 (OHP) and alarm
number 2 (OCP) have occurred.
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Clearing alarms
After correcting the cause of the alarm, press the CLEAR key of the frame. The
alarm will be cleared.
• The alarm number will be displayed until the alarm is cleared using the CLEAR
key. However, if current limit or power limit is selected for the action to be taken
when the OCP or the OPP trips, respectively, the alarm number clears when the
cause of the alarm is corrected.
Bit 6
RVP
(32)
Bit 5
OVP
(16)
Bit 4
OHP
(8)
Bit 3
OPP
(4)
Bit 2
OCP
(2)
Bit 1
UVP
(1)
OHP and OCP:
Displays 10 RVP and UVP:
Displays 33
NOTE