Function
22
isoPV425_D00028_09_M_XXEN/05.2018
Delay on release t
off
The delay on release t
off
can be set uniformly for all messages in the menu "t"
using the parameter "toff".
An alarm will continuously be signalled until the threshold value of the re-
spective measuring value is not exceeded (including hysteresis) for the period
of t
off
without interruption. Each time the threshold value is not exceeded for
the period of t
off
, the delay on release t
off
restarts again. Every alarm message
listed in the alarm assignment has its own timer for t
off
.
Start-up delay t
After connection to the supply voltage U
S
, the alarm indication is suppressed
for the preset time (0…10 s) specified for parameter "t".
3.2.7 Password protection (on, OFF)
If password protection has been activated (on), settings can only be made
subject to the correct password being entered (0...999).
3.2.8 Factory setting FAC
Activating the factory settings will reset all modified settings - with the excep-
tion of the interface parameters - to the default values used when the device
was delivered.
3.2.9 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 control-
led via a test/reset button. A galvanic parallel connection of several test or re-
set inputs for testing multiple insulation monitoring devices is not allowed.
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