Settings In The Device Menu; (1.0) Alarm Settings; (1.1) Insulation Alarm; (1.1.1) Alarm 1 - Bender ISOMETER isoRW685W Manual

Settings

9.2 Settings in the device menu

Representation of the menu items in the headings
The settings of the ISOMETER® are explained in the order of the device
menu. The menu items shown in the device display are indicated in brack-
ets in the headings of this chapter.
9.2

(1.0) Alarm settings

The limit values for the insulation resistances of "Alarm 1" and "Alarm 2" can be specified
in the alarm settings menu and can be adapted to the user profile of the ISOMETER®. A
device password is required for entering the settings. You can adjust the following func-
tions:
9.2

(1.1) Insulation alarm

In the "Insulation alarm" menu, the ISOMETER® limit values for "Alarm 1" and "Alarm 2"
can be set.
Activation or deactivation of the two alarm levels R
"Alarm 2" are illustrated in the graphic below.
An alarm will become inactive as soon as the hysteresis of the set operating value
is exceeded.
R
R
an1
R
an2
Alarm 1
Alarm 2
aktiv
aktiv
9.2

(1.1.1) Alarm 1

For "Alarm 1" an insulation resistance of 1 kΩ...10 MΩ can be set independently
of "Alarm 2".
9.2

(1.1.2) Alarm 2

For "Alarm 2" an insulation resistance of 1 kΩ...10 MΩ can be set independently
of "Alarm 1".
29
for "Alarm 1" and R for
an1 an2
Hysterese
Hysterese
t
Alarm 2 Alarm 1
inaktiv inaktiv
Settings
9.2

(1.1.3) Fault memory

Automatic reset of inactive faults at the outputs relay 1, relay 2, digital output 1, digital
output 2:
If a fault becomes inactive, the programmed outputs remain in fault
•on
condition until the system has been reset manually.
If a fault becomes inactive, the programmed outputs automatically
•off
change the state.
9.2

(1.2) DC alarm

The DC alarm is triggered in the event of a DC offset voltage (U
9.2

(1.2.1) Alarm

The DC alarm is triggered in the event of a DC offset voltage.
•on
The DC alarm is NOT triggered in the event of a DC offset voltage.
•off
9.2

(1.2.2) U(DC-E)

Set the DC alarm to a value between 20 V and 1 kV.
U
120 V
100 V
0 V
R
f
-80 V
-100 V
) in the system.
DC-E
U1
DC+
200 V
U
DC-E
DC-
t
R
U1 U2
f
U2
U =(U +U )/2=(120 V-80 V)/2=20 V
DC-E 1 2
isoRW685W-D_D00178_04_M_XXEN/02.2019