Generation And Cancel Of Upper/Lower Limit Alarm; Alarm Delay - Mitsubishi Electric ME96NSR Operator's Manual

● Generation and Cancel of Upper/Lower Limit Alarm
When the value exceeds the upper or lower limit setting value set in advance, the display blinks and alarm can be output.
(No alarm output when all of the input voltage/input current is zero)
■ Set-up
Refer to set-up menu 5. (see page 10)
■ Alarm Indicator
If the item that had alarm set-up is displayed on the bar graph, the alarm indicator appears.
By blinking of " ▲ ", upper or lower limit is shown.
■ Behavior During Alarm Generation
Alarm condition: When measurement value exceeds alarm value, display blinks and alarm contact closes.
Alarm cancel: When alarm is canceled, display blinks normally and alarm contact opens.
Measurement value > Upper limit value
Alarm Cancel Method
(or Measurement value < Lower limit value)
Automatic Display
(Auto)
Alarm contact
Display
Manual
(HoLd)
Alarm contact
Note 1: In alarm condition, the digital value, the unit (A, V, W, var, VA, PF, Hz), and the phase (1, 2, 3, N, AVG, Σ , DM) of the measurement items blink. There is no blinking when the item is not on the display.
Note 2: In alarm hold condition, the unit (A, V, W, var, VA, PF, Hz) and the phase (1, 2, 3, N, AVG, Σ, DM) of the measurement items blink. There is no blinking when the element is not on the display.
Note 3: Only the present value (middle digital display) blinks on maximum and minimum value screen.
Note 4: In harmonics, only total distortion ratio and RMS value blink. The display of degree does not blink.
■ Alarm Cancel Method
Timing of alarm cancel differs by alarm cancel method.
Automatic
When the measurement value falls below the upper setting value or exceeds the lower setting value, alarm automatically resets.
(Auto)
After the measurement value falls below the upper value or exceeds the lower setting value, alarm is maintained. When the item that
Manual
generates the alarm is displayed, and
(HoLd)
When RESET
Note: In contact input screen, alarm reset (including all items batch reset) cannot be operated.

■ Alarm Delay

When alarm delay time is set, alarm is not generated until status of measurement value exceeding upper/lower setting value continues for delay time.
Phase that judge upper/lower limit alarm differs by measuring items. Please refer to the following table.
Alarm item (*1)
A upper limit
A lower limit
A upper limit (*2)
N
Demand A upper limit
Demand A lower limit
Demand A upper limit (*2)
N
V upper limit
(L-N)
V lower limit
(L-N)
V upper limit
(L-L)
V lower limit
(L-L)
W upper limit
W lower limit
var upper limit
var lower limit
PF upper limit
PF lower limit
Hz upper limit
Hz lower limit
Harmonic current
total RMS value
Harmonic current
phase N RMS value (*2)
Harmonic voltage
total distortion ratio
*1: The apparent power is not included in the alarm element.
*2: Phase N is a alarm element to be independent.
ALARM , HI or LO : blink
Closed
ALARM , HI or LO : blink
Closed
button is pressed, the alarm resets.
RESET
button is pressed for two seconds or more, all items of alarm are reset.
Phase wire
Phase 1 Phase 2 Phase 3 Phase N Phase 1-2 Phase 2-3 Phase 3-1 AVG/Σ
3P3W/3P4W
3P3W/3P4W
3P4W
3P3W/3P4W
3P3W/3P4W
3P4W
3P4W
3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W/3P4W
3P3W
3P4W
3P4W
3P3W
3P4W
Measurement value < Upper limit value
(or Measurement value > Lower limit value)
Normal display
Opened
ALARM , HI or LO : appear
RESET
(Alarm retention)
Closed
Phases
Normal display
Opened
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