Chapter 3 Using Front Display
Display Features
EM720 Power Quality and Revenue Meter
Low
No Load/Power Flow Direction Indicator
The power flow indicator gives information on the load
presence and shows the direction of active power.
Indicator Icon
No load.
Direct active power flow – imported (delivered) active energy.
Reversed active power flow – exported (received) active
energy.
Phase Presence Indicators
Phase presence indicators "123" show the status of either V1-
V2-V3 phase-to-neutral voltages in line-to-neutral wiring
modes, or V12-V23-V31 phase-to-phase voltages in line-to-
line wiring modes.
Indicator Icon
All voltages are present and above the voltage dip threshold.
Blinking phase indicator – the phase voltage is below the
defined voltage dip threshold. Possibly indicates an incorrect
meter nominal voltage setting (see
Chapter 5).
Dashed phase indicator - the phase voltage is either missing
or below the voltage interruption threshold.
If the phase voltage is below the defined voltage dip
threshold, its corresponding phase indicator is blinking.
If the phase voltage is either missing or below the voltage
interruption threshold, the phase indicator is replaced with a
dash.
The EM720 display has a number of programmable features
that can be disabled, enabled and adjusted via the meter
Display Setup (see
Backlight
A short press on any button while the display backlight is off
switches the backlight on.
The backlight stays on as long as you selected in the display
setup and then dims to conserve power. The backlight time is
factory set to 1 minute and can be programmed from 1 to 10
minutes. You can temporarily set the backlight to continuous
operation if you need to work in dark for more time.
General diagnostic message indicator: indicates
that there are diagnostic messages you can
inspect via the DIAGNOSTICS display.
The icon is shut down after you explicitly reset
diagnostics messages either from the display or
via communications (see
Diagnostics).
You can disable diagnostic message indicator via
the Display Setup menu (see
Description
Description
Basic Meter Setup
Display Setup
in Chapter 5).
Display Operations
Clearing Device
Display
Setup).
in
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