Mitsubishi Electric ME96SSRA-MB, Руководство пользователя

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5. Operation
72
5.2 Usage According to Purpose (Alarm, Periodic Active Energy, Rolling Demand, Operating
Time, Password, etc.)

Canceling the upper/lower limit alarm
The alarm cancellation method differs depending on the setting for alarm reset. The upper and lower limit alarms can be
cancelled also via communication.
Alarm cancel method Cancelation method
Automatic (Auto)
When the measurement value is below the upper/lower limit set value, the alarm is
automatically reset.
Manual (HoLd)
The alarm is maintained even after the measurement value is below the upper/lower limit set
value. After the measurement value is below the upper/lower limit alarm value, operate the
following alarm cancellation operation.
(Note: However, alarms cannot be cancelled from the maximum/minimum value display
screen, or the digital input/output screen.)
<Cancelling alarms for selected elements>
Display the element where the alarm generated, and then press to cancel the alarm.
When an element has a phase such as current and voltage, it is necessary to press
for each phase when cancelling an alarm.
<Cancelling alarms for all elements>
At the current value display screen, press for 2 seconds to cancel all alarms.
Note: The difference of 0.8% between the maximum scale and alarm value is used for determining whether the measurement value is
below the upper/lower limit alarm value in order to prevent chattering.

Stopping backlight flickering caused by upper/lower limit alarm generation
Press the button to stop the backlight flickering.

Upper/lower limit alarm items on the alarm contacts
Setting Alarm item for alarm output
Contact output
function 1
Contact output
function 2
C1A and C1B terminals C2A and C2B terminals
Alarm output Alarm output Alarm item 1
Alarm items 2-4
(output collectively with either of them)
Alarm output Pulse output
Alarm items 1-4 (output collectively with
either of them)
No alarm
Pulse output Alarm output No alarm
Alarm items 1-4
(output collectively with either of them)
Pulse output Pulse output No alarm No alarm

Display of periodic active energy
The ability to measure the active energy divided into two time segments enables individual measurement of the active
energy in a desired time segment such as peak/off-peak and day/night.
The periodic active energy is counting, even if the periodic active energy display setting is OFF.
(For the setting of the Periodic active energy display, refer to page 44.)
This is displayed when the button is pressed repeatedly in the operation mode to switch the measurement displays.

Resetting periodic active energy to zero
Showing the periodic active energy 1 or 2 on the display and holding down the button for 2 seconds reset the
periodic active energy to zero. (Only the displayed periodic active energy is reset.)
When the password protection setting is enabled, the periodic active energy is reset to zero after the password is entered.
The periodic active energy can be individually or simultaneously reset to zero via communication. (In this case, the
password is not necessary)
RESET
RESET
RESET
DISPLAY
RESET
The time segments can be switched according to the setting via communication or the digital input (DI).
(The time segments cannot be switched manually (button operation).)
<For control via communication>
・
When the selected bit is ON (1), the active energy (Imported) is
added to the periodic active energy n (where n = 1, 2).
・
When the selected bit is OFF (0), the active energy (Imported) is not
added to the periodic active energy n (where n = 1, 2).
<For control from the digital input (DI)>
・
When there is no digital input (DI), the active energy (Imported) is
added to the periodic active energy 1 and the active energy
(Imported) is not added to the periodic active energy 2.
・
When there is digital input (DI), the active energy (Imported) is not
added to the periodic active energy 1 but the active energy
(Imported) is added to the periodic active energy 2.
<For setting without switching>
・
The active energy (Imported) is added to the periodic active energy 1
and periodic active energy 2. (No switching between time segments)
Periodic active energy 1 Periodic active energy 2
RESET