Important information
18
isoHV425_D00082_03_M_XXEN/05.2020
3.2.6
Password protection (on, OFF)
If password protection has been activated (on), settings can only be made if the correct
password has been entered (0...999).
3.2.7
Factory setting FAC
Activating the factory settings will reset all modified settings ? with the exception of the
interface parameters ? to the default values upon delivery.
3.2.8
External, combined test or reset button T/R
Reset= press the external button < 1.5 s
Reset followed by a test = press the external button > 1.5 s
Stop measuring function = press and hold the external button
The stop function can also be triggered via an interface command and in this case it can
only be reset via the interface.
Only one ISOMETER® may be controlled via an external test/reset button. A galvanic
parallel connection of several test or reset inputs for testing multiple insulation moni-
toring devices is not allowed.
3.2.9
Fault memory
The fault memory can be activated or deactivated with the parameter "M" in the "out"
menu. When the fault memory is activated, all pending alarm messages of the LEDs and
relays remain available until they are deleted by using the reset button (internal/exter-
nal) or the supply voltage
U
s
is turned off.
3.2.10 History memory HiS
When the first error occurs after clearing the history memory, all measured values (that
are marked in the table on
) are saved in the history memory. This data can be
read out using the menu item "HiS". In order to be able to record a new data record, the
history memory must first be cleared via the menu using "Clr".
