Lumel NA5 Series, User Manual, Page: 54 / 64

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8. A result inconsistent with our
expectations appears on the display.
Check if the individual characteristic is not switched
on. In case of necessity enter into the programming
matrix and accept the SEt parameter. The meter will
introduce parameters in accordance with the table 2.
9. The bargraph does not work in
accordance with our expectations.
Check bargraph parameters. In case of a further
incorrect operation, enter into the programming
matrix and accept the parameter SEt .
Switch the display and bargraph tSt test on.
10. Despite the exceeding of the alarm
threshold the alarm relay does not
switch on.
Check the delay of alarm operation introduced into
the meter. In case of need, correct the dLY
parameters.
11. The meter, instead of displaying the
measurement result, displays the
parameter symbol and its value.
The meter is working in the preview mode or in the
programming mode. Press the escape key .
12. Despite of the introduced delay in the
alarm operation, e.g. 30 seconds,
the alarm after this time did not
operate.
Check if interface conductors ( A , B , GND ) were
correctly connected. Then, check in the program-
ming matrix the setting of the interface ( bAud , trYb ,
Adr ). These parameters must be the same as in the
used software.
The lasting alarm state was shorter than the
programmed, that means that during the lasting
time, the alarm withdrawal state occurred. In such a
case, the meter begins to count down the time from
the beginning.
13. The meter does not establish the
communication with the computer
through the RS-485 interface.
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