5. CHANGING SETTINGS
IM 2493WVP-1
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If you have a 5 Amp unit, the next time you press Set the value of the secondary
will blink. To change the value, press Inc. There are only two choices: 1 or 5.
If you have a 1 Amp unit, or you have set the secondary on a 5 Amp unit,
pressing Set will now move you to the Confirm mode. All values will blink. If the
values are correct press Set one last time to save them and move on to the
Analog Output settings. Pressing Mode at this time or at any other step in the
process will restore the old CT settings.
The CT primary value can be set to any value between 1.000 and 25000 (5
Amps X 5000 ratio). If it is not in this range you get the error “ErrH” (Too High) or
“ErrL” (Too Low) when you try to advance to the secondary. The ratio of the
Primary and Secondary must be between 1.000 and 5000. If the PT is also set,
the combined ratio of CT * PT cannot exceed 357910. This is the mathematical
limit to the software. You will get “ErrH” or ErrL” if you try to advance to Confirm
mode with an incorrect ratio.
If you try to save a ratio value that exceeds the precision of the unit, that value
will be automatically rounded off. For example, setting the CT to a ratio of 5.367
to 5 results in a value of 1.0734. The unit will round this to 1.073, and in the
future display the ratio as 5.365 to 5. Setting the secondary to 1 will always
avoid this.
Changing the Rolling Average setting
The rolling average causes the displayed value to be an average of the number
of samples to which this parameter is set. Increasing this setting will reduce digit
bounce, but will slow the display response time. The analog output response time
is not affected by this setting.
