Password Protection (On, Off); Maximum Permissible Leakage Capacitance; Factory Setting Fac; External, Combined Test Or Reset Button T/R - Bender ISOMETER isoUG425 Operating Manual

Function
Response delay
on
The response delay t can be set uniformly for all messages in the "t" menu using the pa-
on
rameter "ton", whereby each alarm message specified in the alarm assignment has its
own timer for t . This delay time can be used for interference suppression in the case of
on
short measuring times.
An alarm will only be signalled when a threshold value of the respective measured value
is violated for the period of t without interruption. Every time the threshold value is vi-
on
olated within the time t , the response delay "ton" restarts once again.
on
Delay on release
off
The delay on release t can be set uniformly for all messages in the "t" menu using the
off
parameter "toff", whereby each alarm message specified in the alarm assignment hast its
own timer for t . An alarm will continuously be signalled until the threshold value of the
off
respective measured value is not violated (including hysteresis) for the period of t
out interruption. Each time the threshold value is not violated for the period of t
delay on release "toff" restarts once again.
Start-up delay
After connection to the supply voltage U
(0...10 s) in the parameter "t" is suppressed.
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

Maximum permissible leakage capacitance

A set capacitance value above 1 μF extends the guaranteed operating time t
tionally. It should only be increased if a corresponding system leakage capacitance C
present in the system to be monitored and therefore, an extended measuring time is re-
quired. A system leakage capacitance C
alarms.
3.2.9

Factory setting FAC

Activating the factory setting will reset all modified settings, with the exception of the
interface parameters, to the default upon delivery.
10
the alarm indication for the preset time
S
higher than the set value may lead to false
e
Function

3.2.10 External, combined test or reset button T/R

Reset= Press the external button < 1.5 s
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 par-
allel connection of several test or reset inputs for testing multiple insulation monitoring
devices is not allowed.

3.2.11 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 LED and relay alarm messages re-
with-
off main available until they are deleted by using the reset button (internal/external) or the
, the
off
supply voltage U is turned off.
s

3.2.12 History memory HiS

When the first error occurs after clearing the history memory, all measured values (that
are marked in the table on
read out using the "HiS" menu item. In order to be able to record a new data record, the
history memory must first be cleared via the menu using "Clr".
propor-
ae
is
e
Page 18) are stored in the history memory. This data can be
isoUG425_D00220_02_M_XXEN/05.2018