Mitsubishi Electric ME96 Series, Manual

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ME96 Super-S Series Ver.B Features
Variety of Complementary Features
Password Function
Special Primary Voltage/Current and Special Secondary Voltage are settable
With the password function, the following items can be protected from an accidental execution.
No.
1
2
3
4
Shift to the setting mode
Reset the max./min. values
Reset the value of active energy, reactive energy and apparent energy
Reset the value of periodic active energy Adjust the time limit of rolling demand
Reset the peak value of rolling demand
Reset the value of operating time
Password-protected item No.
5
6
7
Password-protected item
Time (min) Time (min)
0 5 10 15
15 min
5 min
20 25 0 15 30
15 min 15 min
(1) Communications Test
q
Displays current alarm and contact status.
w
Press the Reset button for 2 sec, and regardless if there is an alarm
or not, the display and digital output will operate as follows.
(2) Alarm/Digital Output Operation Test
(3) Analog Output Operation Test
Press the Reset button one time to output one pulse.
Note: After reaching 50, count will return to 1.
(4) Pulse Output Operation Test
Standards
All products are compliant with CE Marking, UL Standards, KC mark and FCC/IC.
0%
25% 4 mA
8 mA
Output
4 mA to 20 mA
Output specs
50% 12 mA
75% 16 mA
100% 20 mA
0%
25%
50%
75%
100%
(1) Special primary current
1 A to 30 kA
(2) Special primary voltage
60 V to 750 kV
3-phase 4-wire system
63.5 V, 100 V, 110 V, 115 V, 120 V
3-phase 3-wire, 1-phase 2-wire system
100 V, 110 V, 220 V
(3) Special secondary voltage
Periodic Monitoring Function
Power consumption can be measured in three individual intervals
(e.g., peak, off- peak and shoulder, etc.).
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).)
Power consumption
(period 1)
Power consumption
(period 2)
Power consumption
(period 3)
Rolling Demand Function
Rolling demand is the estimated power consumption in a specified period (interval).
For the block interval demand, select the duration (interval) of the block to be used for demand calculation.
q
Rolling block
Use rolling block to set the interval and sub-intervals from
1 min to 60 min (1 min interval). Rolling demand is
calculated and updated at the end of each sub-interval.
However, Present and predictive values are always
calculated.
w
Fixed block
Use fixed block to set the interval from 1 min to 60 min
(1 min interval). Rolling demand is calculated and updated
at the end of each interval. However, Present and predictive
values are always calculated.
(For fixed block, use the same time limits both of interval
and sub-interval).
<Example: Interval, 15 min; Sub-interval, 5 min>
<Rolling demand calculation>
Rolling demand is calculated when
the sub-interval has been
completed.
<Rolling demand display>
When an interval has been completed,
the rolling demand displayed is the
newest time limit value.
<Rolling demand calculation>
Rolling demand is calculated
when the sub-interval has been
completed.
<Rolling demand display>
When an interval has been completed,
the rolling demand displayed is the
newest time limit value.
<Example: Interval, 15 min; Sub-interval, 15 min>
Test Function
»
A test function is provided to check the wiring for communication, alarm output/digital output, analog output and pulse output without input of voltage or current.
» At the time of wiring test before shipment of the board and counter test for system validation on site, test signals can be output only by applying the auxiliary power.
Note: Depending on the optional unit and settings, the test function may not be available (may not be displayed).
q
Display
»
The same as for the operating mode, display patterns and other data are shown as set.
»
Both maximum and minimum values can be displayed.
w
Communication data
»
Communication items and value are the same one on the display. The items value that are not displayed is 0 (zero).
»
Measuring items set for alarm will be displayed at the time of an alarm.
»
Digital input/output status can be monitored.
(1) Incorrect wiring pattern display function
Checking Input Wiring Support Function
(2) Incorrect Wiring Identification Support Display Function
ON
OFF
Output terminal Status
Alarm
No alarm
Display
Closed
Open
Low voltage
Low current
Display
01
02
Content
Voltage unbalance
Incorrect connections
at multiple spots
Display
03
04
Content
q
Display the output items.
w
Press the + or – button to change the
analog output.
Note: Default value is 0%.
0 1 2 … 49 50 [pulse]
Note: Default value is 0 pulses.
Normal state When incorrect wiring
pattern cannot be detected
When phase 1 CT is
connected in reverse
Incorrectly connected spot is
displayed in blinking.
Incorrect wiring pattern No. is
displayed.
Note 1: When wiring of either one of the current/voltage terminals is
not correct, the incorrectly connected spot is easily
identified.
Note 2: Not all incorrect wirings can be identified. When the voltage
input is incorrectly connected and the current input is also
incorrectly connected, a different pattern of incorrect wiring
may be displayed.
Check by using the incorrect wiring
identification support display function.
» This function displays each phase angle (voltage phase 1 standard) of voltage and current, power values (W1, W2, W3) of each phase,
voltage value & current values to support identifying incorrect wirings. By knowing abnormality in the phase angle of voltage/current and
by comparing it with the normal value, you can more easily identify an incorrectly wired spot.
»
Examples of screen displays of incorrect wiring identification support function.
» Whether the voltage/current input wirings are correct or not is displayed.
As for the incorrect wiring display pattern, see the instruction manual.
Incorrectly wired
Display of phase angle (voltage) Display of phase angle (current) Display of electric power
Display of current Display of voltage
Normal wiring (in the case of 3-phase 4-wire system with power factor 1.0)
Display of phase angle (voltage) Display of phase angle (current) Display of electric power
Display of current Display of voltage
In the above cases,
①
The current phase angle is 240° for Phase 1 and 0° for Phase 3.
②
As electric power (W1/W3) is in negative value, it is judged based on the examples of
screen displays of incorrect wiring identification support function (See the instruction
manual) that phase 1 CT and phase 3 CT are connected in reverse.
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