Mitsubishi Electric ME96SSEB-MB, User Manual

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5. Operation
Usage Depending on the Application (Alarm, Operating Time, Password, etc.)
The following shows how to use the instrument depending on the application.
5.2.1. Upper/Lower Limit Alarm Display and Action
When the set upper/lower limit alarm value is exceeded, the display starts to blink.
*For details on how to set the upper/lower limit alarm, refer to
3.6 .
■
Action in case of alarm
Alarm generating: When the set alarm value is exceeded, the display blinks.
*Note
Alarm cancellation: When an alarm is cancelled, the display turns to the normal mode.
Note: When you set the alarm delay time, an alarm will generate if the set upper/lower limit alarm value is exceeded and
this situation continues for the alarm delay time.
Alarm reset
method
Measured value
＞
Upper limit alarm value
Measured value
＜
Lower limit alarm value
Measured value
＜
Upper limit alarm value
Measured value
＞
Lower limit alarm value
Automatic
(Auto)
Screen
and or blink
Normal display
Manual
(HoLd)
Screen
and or blink
(Alarm generating)
and or light up
(Alarm retention)
Normal display
(Alarm cancellation)
Note1: If measuring elements of alarm generating are displayed on the screen, the digital value, unit (A, V, W, PF, Hz, %,
DM, and THD), and phase (1, 2, 3, and N) will be displayed according to the alarm status as the following table.
Alarm status Digital value Unit Phase
Alarm generating Blink* Blink Blink*
Alarm retention Light up Blink Blink*
Alarm cancellation Light up Light up Light up
Note2: When the backlight blinking is set to
‘on’ in case of alarm, the backlight blinks at generating alarm.
Note3: On the Max/Min value screen, the present value, which is displayed at the middle line of digital display,
and or blink.
■
Monitored phase of upper/lower limit alarm item
The phase for monitoring the upper/lower limit alarm varies depending on the measuring item.
For details, refer to the following table.
Upper/Lower limit alarm item
Monitored phase
3-phase
4-wire
3-phase 3-wire
(3CT, 2CT)
1-phase 3-wire
(1N2)
1-phase 3-wire
(1N3)
A upper limit, DA upper limit 1, 2, 3 1, 2, 3 1, N, 2 1, N, 3
A lower limit, DA lower limit 1, 2, 3 1, 2, 3 1, 2 1, 3
A
N
upper limit, DA
N
upper limit N
― ― ―
A
N
lower limit, DA
N
lower limit N
― ― ―
V (L-L) upper limit Note1 12, 23, 31 12, 23, 31 1N, 2N, 12 1N, 3N, 31
V (L-L) lower limit Note1 12, 23, 31 12, 23, 31 1N, 2N, 12 1N, 3N, 31
V (L-N) upper limit 1N, 2N, 3N
― ― ―
V (L-N) lower limit 1N, 2N, 3N
― ― ―
W upper limit, var upper limit, PF upper limit Total Total Total Total
W lower limit, var lower limit, PF lower limit Total Total Total Total
Hz upper limit 1N 12 1N 1N
Hz lower limit 1N 12 1N 1N
HI total upper limit 1, 2, 3 1, 2, 3 *Note2 1, 2 1, 3
HI
N
total upper limit N
― ― ―
THD
V
upper limit 1N, 2N, 3N 12, 23 1N, 2N 1N, 3N
Note1: For 12-phase or 31-phase of 1-phase 3-wire system, alarm monitoring is executed based on twice the set
upper/lower limit alarm value.
Note2: Harmonic current 2-phase is measured for 3-phase 3-wire system (3CT) only.
*When the phase of no alarm is
displayed on the screen, it does not
blink.
RESET