Mitsubishi Electric ME96SSEB-MB, User Manual

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3. How to Set up
3.6 Setting Menu 5: Alarm Settings (Settings for Upper/Lower Limit Alarm and Motor
Starting Current Mask Function)
SET DISPLAY
SET DISPLAY
SET DISPLAY
SET DISPLAY
SET DISPLAY
Set the reset method to cancel an alarm.
Reset method
(Settings)
Description
(For details, refer to 5.2.1 to 5.2.2 .)
Automatic
(Auto)
When alarm-generating conditions
disappear, the alarm is automatically
reset.
Manual
(HoLd)
Even if alarm-generating conditions
disappear, the alarm is retained. To
cancel the alarm, you must execute
button operation.
Note: When
①
Upper/Lower limit alarm item 1 and
③
Upper/Lower limit alarm
item 2 to 4 are all set to
‘non’, this setting is skipped.
⑥
Alarm reset method
②
Upper/Lower limit
alarm value 1
Set the alarm value of upper/lower limit alarm item 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, var upper limit -95 to 100 to 120 (%) 1%
W lower limit, var 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
HI total upper limit 1 to 35 to 120 (%) 1%
HI
N
total upper limit 1 to 35 to 120 (%) 1%
THD
v
total upper limit 0.5 to 3.5 to 20.0 (%) 0.5%
Note: W and var show the percentage ratio of a standard value.
For details about how to calculate the standard value, refer to 6.2 Standard Value .
A, A
N
, DA, DA
N
, the total RMS value of harmonic current, and the total RMS value
of harmonic current N-phase show the percentage ratio of the CT primary current
setting.
V shows the percentage ratio of the VT primary voltage setting (or direct voltage).
*For 1-phase 3-wire system, V shows the percentage ratio of the phase voltage .
For 12-phase or 31-phase, alarm monitoring is executed based on twice the set
upper/lower limit alarm value.
Set the alarm value of each of upper/lower limit alarm item 2 to 4.
The setting method is the same as
②
Upper/Lower limit alarm value 1.
④
Upper/Lower limit
alarm value 2 to 4
Set a measuring element of each of upper/lower limit alarm item 2 to 4.
The item you have already selected is not available repeatedly.
The setting method is the same as
①
Upper/Lower limit alarm item 1.
③
Upper/Lower limit
alarm item 2 to 4
Set the alarm delay time if you want to prevent an alarm
caused by momentary overload or noise.
If you set this setting, an alarm will occur only when the
upper/lower limit alarm value is exceeded and the situation
continues for a period of alarm delay time.
⑤
Alarm delay time
0 s
5 s
10 s
20 s
30 s
40 s
50 s
1 min
2 min
3 min
4 min
5 min
Note: When
①
Upper/Lower limit alarm item 1
and
③
Upper/Lower limit alarm item 2 to 4
are all set
to “non”, this setting is skipped.