Mitsubishi Electric ME96SSHA-MB, Руководство пользователя

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3. Setting
25
3.6 Setting Menu 5:
Alarm Settings (Setting Upper/Lower Limit Alarm, Motor Starting
Current Mask Function, etc.)
SET DISPLAY
SET DISPLAY
SET DISPLAY
SET DISPLAY
SET DISPLAY
Set the alarm value for the upper/lower limit alarm items 2 to 4.
The setting method is the same as ② Alarm value 1 .
④
Alarm value 2 to 4
Set the measurement element assigned to the upper/lower limit alarm items 2 to 4.
Elements that are set elsewhere cannot be set.
The setting method is the same as
①
Alarm item 1 .
③
Alarm item 2 to 4
Set the alarm value for upper/lower limit alarm element 1. The following table shows
the setting range
.
Measuring element Setting range
Setting
step(Note)
A, AN, DA, DAN upper limit 5 to 100 to 120(%) 1%
A, DA lower limit 3 to 10 to 95(%) 1%
V (L-N), V (L-L) upper limit 25 to 110 to 135(%) 1%
V (L-N), V (L-L) lower limit 20 to 70 to 95(%) 1%
W upper limit -95 to 100 to 120(%) 1%
W lower limit -120 to 3 to 95(%) 1%
PF upper limit -0.05 to 1 to 0.05 0.05
PF lower limit -0.05 to -0.5 to 0.05 0.05
Hz upper limit 45 to 65(Hz) 1Hz
Hz lower limit 45 to 65(Hz) 1Hz
Harmonic current total RMS value 1 to 35 to 120(%) 1%
N-phase harmonic current total
RMS value
1 to 35 to 120(%) 1%
Harmonic voltage total distortion
ratio
0.5 to 3.5 to 20.0(%) 0.5%
Note:W shows the percentage for the maximum scale value (±0 step).
A, AN, DA, DAN, H armonic current total RMS value, N-phase harmonic current
total RMS value shows the percentage for the CT primary current.
"V" shows the percentage for the VT primary voltage (or direct voltage).
(The "V" for 1-phase 3-wire is the percentage for
phase to neutral voltage .
Alarm monitoring is executed using twice the value which set upper/lower limit
alarm for the 12-phase and 13-phase.)
②
Alarm value 1
Set the alarm mask time for when you want to prevent a
momentary overload or noise alarm.
When this is set, an alarm is generated only when the alarm value
over the upper/lower limit alarm value for a longer time than the
delay time. On the setting
screen, seconds are indicated by “s”
and minutes are indicated by “min”.
⑤
Alarm delay time
0s
5s
10s
20s
30s
40s
50s
1min
2min
3min
4min
5min
Note
：
When all settings for
①
Alarm item 1
and
③
Alarm item 2 to 4
are set to “non”,
this setting will be skipped.
Set the alarm cancel method at generation of alarm. (screen, relay)
Reset method
(Setting value)
Description
(Refer to pages 44 and45)
Automatic
(Auto)
When there is no alarm generation
condition, alarm is automatically reset.
Manual
(HoLd)
The alarm will continue even when the
alarm generated conditions no longer exist.
It is necessary to execute button operation
to cancel the alarm.
Note: When all settings for
①
Alarm item 1 and
③
Alarm item 2 to 4
are set to "non," this setting will be skipped.
⑥
Alarm cancel method