Omron KM-N3-FLK, Руководство пользователя

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7.
Troubleshooting
7.2 Troubleshooting
Check if an issue is covered by the following items if the product doesn't seem to be working correctly.
Phenomena Description Action to take Page
The main unit doesn't start Is the LCD display off? The unit isn't being supplied with power.
Check that the voltage terminals have
been wired and that voltage within the
rated range is being supplied.

25
The power saving mode is working. The
LCD will light again when you press any
of the switches.
 61
Cannot measure voltage Are the voltage connections
and phase correct? Check that the voltage connection
matches the phase and wire type you
have selected.
 35
Have you selected 1P2W2
(1-phase 2-wire voltage
selected) or 1P3W2 (1-
phase 3-wire composite) as
the phase and wire type? If you have selected 1P2W2 or 1P3W2
as the phase and wire type, set the
correct voltage allocation for the
branching 1-phase 2-wire.

58
Cannot measure current Is the CT connected? Connect the CT to the main unit.
Also check if the CT has become
separated from the electric wire.
 23
Is the connection
positioning of the
measuring circuits and the
CT terminals correct? Circuit A uses CTs 1, 2, or 3, circuit B
uses CT 2, circuit C uses CT 3 or 4, and
circuit D uses CT 4. Connect properly
according to the connection diagrams.

23
Voltage and current can be
measured, but power
cannot be measured Are the CT fitted back to
front? If negative electricity is being measured,
there is a chance that all of the fitted CTs
have been fitted back to front.
Alternatively, if electricity is being
measured is a value near 0, there is a
chance that one of the fitted CTs has
been fitted back to front.

28
Is the voltage phase
correct? Power cannot be correctly measured if
the phase of the voltage is not correct. If
the function for warning about miss-
wiring is on, "A-VR", "A-VS","A-VT" and
"A-W2" are displayed. Wire correctly.
 35, 62
Have you selected 1P2W2
(1-phase 2-wire voltage
selected) or 1P3W2 (1-
phase 3-wire composite) as
the phase and wire type? If you have selected 1P2W2 or 1P3W2
as the phase and wire type, set the
correct voltage allocation for the
branching 1-phase 2-wire.

58