7-1 Comparator function
Set a reference resistance value at the insulation resistance range.
The measured value is compared to the pre-set reference value, and
the mark of
or
is displayed on the LCD and buzzer
Settable reference value:
0.1/0.2/0.25/0.4/0.5/1/2/3/5/10/20/30/50/100/Any : Unit [MΩ]
The upper limit of
"
Any
"
varies depending on output voltage.
50/100/125Ｖ: 0.000 to 199.9: Unit [MΩ]
250/500/1000Ｖ: 0.000 to 999.9 : Unit [MΩ]
This function can be set at each range.
Setting procedure
(1) Set the Range selector switch to any desired insulation resistance
range with the
key
pressed down.
In this case, there is no need to press the Safety
key
to set the
range selector switch to 500V or 1000V range.
(2) Press the UP or DOWN
key
to select
or
and then press
the
key
.
Select
to sound the when the measured value exceeds the
pre-set value.
Select
to sound the when the measured value is under the
pre-set value.
(3) The number displayed at the lower left on the LCD starts
flickering. Press the UP or DOWN
key
to select the reference
value, and press the
key
.
(4) The message
and the set value are displayed on the LCD
once the setting completes.
(5) Press the
key to release this function.
Setting for Any
(1) The decimal point displayed at the lower left on the LCD starts
flickering when "Any" is selected. Press the UP or DOWN
key
to
select the desired decimal position, and then press the
key
.
(2) The four-digit start flickering from the left. Press the UP or DOWN
key
and set it to the desired value, and press the
key
.
e.g.: in case 0.5M
Ω
is set.
― 16 ―
7．Functions keys
Fig. 12. Change of sub-indication
