Bender ISOMETER isoCHA425 Manual page 16

Operation of the device
5.2 Menu overview
Measurement display
Standard display
R
Enter
or
t > 5 min.
R [kΩ]
C [μF]
U L1 L2 [ V]
UL1 [ V]
UL2 [ V]
R [ %]
Function Button
Enter Select, acknowledge input / MENU
Menu Call menu / MENU
Esc Exit menu item / MENU
Test Start device test / T
Reset Clear fault memory /
Menu item
AL Querying and set response values
out Configuring fault memory, alarm relays and interface
t Setting delay times and self test cycles
SEt Setting device control parameters
InF Querying software version
HiS Querying and clearing the history memory
ESC Going to the next higher menu level
16
Menu selection
Menu
Esc
k AL
out
t
SEt
InF
HiS
ESC
Enter
Parameter selection
Esc
P
1
. . .
P
n
ESC
Enter
Optional Password
Application
Enter
Short
Esc
Edit parameters
> 1.5 s
> 1.5 s
Enter
> 1.5 s
Save parameters
R > 1.5 s
Parameter
Operation of the device
5.3 "AL" menu
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 reaches or falls below the activated values R1 or R2, this leads
F
to an alarm message. If R exceeds the values R1 or R2 plus the hysteresis (see table
F
below), the alarm will be cleared.
The parameters ("U <" and "U >") for monitoring the mains voltage can also be activated
or deactivated in the "AL" response value menu . The maximum undervoltage value is
limited by the overvoltage value.
Display Activation
FAC Ke Value range
R1 < on R2 ... 250
R2 < on 5... R1
U < off 10 ... "U>"
U > off "U<" ... 500
FAC = Factory setting; Ke = Customer settings
Setting value Description
FAC Ke
Pre-alarm value R
46 kΩ
Hys. = 25 %/min. 1kΩ
Alarm value R
23 kΩ
Hys. = 25 %/min. 1kΩ
Alarm value
10 V undervoltage RMS
Hys . = 5 %/min. 5 V
Alarm value
500 V overvoltage RMS
Hys. = 5 %/min. 5 V
isoCHA425_D00352_01_M_XXEN/10.2019
an1
an2