Menu "Al; Response Value Setting - Bender ISOMETER isoEV425 Manual

5.3 Menu "AL"

5.3.1

Response value setting

The two parameters that monitor the insulation resistance, "R1" and "R2", can
be found in the response value menu "AL". The value R1 can only be set higher
than the value R2. If the insulation resistance R
tivated values R1 or R2, then this leads to an an alarm message. If R
the values R1or R2 plus the hysteresis value (see table below), the alarm will
be cleared.
Also in the response value menu "AL" the parameters ("U <" and
"U >") for monitoring the nominal system voltage U
activated. The maximum undervoltage value is limited by the overvoltage val-
ue.
Display Activation
FAC
on
R1 <
on
R2 <
off
U <
off
U >
FAC = Factory setting;
*applies to isoEV425HC
**applies to isoEV425-D49-4
32
Setting value
Cs Value range
R2 ... 500
1 ... R1
30 ... U>
U< ... 1.15 k
Cs = User settings
reaches or falls below the ac-
F
FAC Cs
500/
200*/ kΩ
170**
100 kΩ
30
1000
isoEV425_D00126_09_M_XXEN/03.2019
Operation of the device
F
can be activated or de-
n
Description
Pre-alarm value R
Hys. = 25 %/min. 1kΩ
Alarm value
Hys. = 25 %/min. 1kΩ
Alarm value
V
undervoltage
Hys. = 5 %/min. 5 V
Alarm value
V
overvoltage
Hys. = 5%/min. 5 V
exceeds
an1
R
an2