I269
I
GB
F
E
02
17
31100110
G
B
6
HOUR COUNTERS PAGE
– The Hour counters page shows the following meters simultaneously:
• Total hour counter (counts the power-on time of the device)
• Partial hour counter.
– To clear counters it is necessary to access the commands menu.
– The hour counters page can be hidden completely if the general hour counter enable has been set to OFF (see hour counter menu).
TREND GRAPH PAGE
– The trend graph page allows to show the changes in the time domain of one measurement selectable among the following:
• Average equivalent voltage
• Average total active power
• Average total reactive power
• Average total apparent power.
– The default measurement is the Average total active power. To change the measurement, enter the dedicated menu parameter in the Trend sub-menu.
– It is possible to see on the graph the history of the last 96 values of the integrated measurement, each corresponding to an integration time interval.
– The default time interval is equal to 15 min, so the graph depth in time equals 24h.
– With the default factory setting, the trend graph shows the active power demand variation of the last day.
– The consumption data are lost when auxiliary power is removed from the DMG device or when the settings in the setup menu are changed.
– When the maximum storing capacity is exceeded, the newest data will overwrite the oldest, so that the most recent data are always shown.
– The vertical full-scale is calculated automatically, depending on the measurement selected and the highest value recorded.
1 - Time scale.
Indicates the time in the past (hh:mm)
to which the measurements are referred
2 - Vertical scale.
Can be autoranging or fixed
by the user.
3 - Measurement shown on graph
COMMANDS MENU
– The commands menu allows executing some occasional operations like reading peaks resetting, counters clearing, etc.
– If the Advanced level password has been entered, then the commands menu allows executing the automatic operations useful for the device configuration.
– The following table lists the functions available in the commands menu, divided by the access level required.
Code COMMAND ACCESS LEVEL DESCRIPTION
User Advanced
C.01 HI-LO RESET
Clears of HI and LO peaks of all readings
C.02 MAX DEMAND RESET
Clears of Max Demand of all readings
C.03 PARTIAL ENERGY METER RESET
Clears partial energy meters
C.04 PARTIAL HOUR COUNTER RESET
Clears partial hour counter
C.11 TOTAL ENERGY METER RESET
Clears total energy meters
C.12 TOTAL HOUR COUNTER RESET
Clears total hour counter
C.13 PARAMETERS TO DEFAULT
All setup parameters are reset to factory default value
C.14 PARAMETERS BACKUP
Saves a backup copy of all setup parameters
C.15 PARAMETERS RESTORE
Restores the setup parameters to backup values
C.16 WIRING TEST
Carries out the wiring test in order to check proper wiring of the
DMG. See wiring test section.
– Once the required command has been selected, press
to execute it. The device will prompt for a confirmation. Pressing
again, the command will be executed.
– To cancel the command execution, press
MENU
.
– To quit commands menu, press
MENU
.
WIRING TEST
– The wiring test allows verifying if the connection of the DMG device has been done properly.
– To be able to execute the test, the device must be connected to an active plant, with the following conditions:
• Three-phase system with all phases present
• Current flowing in each phase > 1% of the CT primary.
• Positive flow of energies (that is a normal plant where the inductive load draws power from the supplier).
– To launch text execution, enter commands menu and select the required command per commands menu instructions.
– The test allows to verify the following points:
• Reading of the three phases
• Phase sequence
• Voltage unbalance
• Reverse polarity of each CT
• Mismatch between voltage and current phases.
– If the test does not succeed, the display shows the reason of the failure.
– If instead the test succeeds, then the condition is stored in the non-volatile memory, and a message that states the test passed is shown in the information page.
1 - Test sequence
2 - Test result