iso685-D-P_D00170_00_M_XXDE/06.2016
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16. Alarm messages
16.1 Alarm messages of the ISOMETER®
Alarm message
Description
Measures
Reference
LED indicators
Insulation fault
An insulation fault exists. The insulation resistance falls
below the response value
R
an1
.
• Observe insulation resistance in the monitored system and, if nec-
essary, eliminate fault.
• Reset fault message by pressing the reset button
“Function descrip-
tion” on page 12
ALARM 1 lights
Insulation fault
An insulation fault exists. The insulation resistance falls
below the response value
R
an2
.
• If necessary, locate insulation fault using the EDS
• Eliminate insulation fault in the system being monitored
• Reset fault message by pressing the reset button
“Function descrip-
tion” on page 12
ALARM 2 lights
Check L1-L2-L3 for cor-
rect connection!
No low-resistance connection between the line con-
ductors
• Check the wiring of terminals L1/+, L2 and L3/- to the IT system
• Press the test button
• Check mains voltage
• Check fuses
• Check set system type
& menu setting
ALARM 1 + ALARM
2 flash alternately
Check E-KE connections
for interruptions!
No low-resistance connection between terminals E and
KE to earth (PE)
• Check the wiring of terminals E and KE to earth (PE)
• Press the test button
ALARM 1 + ALARM
2 flash in common
mode
Service mode active!
The device is in maintenance condition
• Contact Bender Service
SERVICE lights up
The profile does not suit
the application!
Wrong profile selected for this application
• Check measured system capacitance or mains frequency in the
Info menu
• Select another profile taking into consideration the characteristics
&
No DHCP server found!
Connection problem at the Ethernet interface
• Check cable connection at the Ethernet interface
• Check the DHCP server's availability
• Check the DHCP's interface configuration in the device
Check time and date!
Time and date have not been set yet
• Set local time and date
(in case of voltage failure a buffer for three days)
Load on X1 too high!
Sum of the external loads on X1 is too high
• Check load at X1.+, X1.Q1 and X1.Q2
• Check ambient temperature
Device error x.xx
Internal device fault
• Press the TEST button
• Switch the supply voltage off and on
• Contact Bender Service
SERVICE lights up
Num.ISOnet devices
The configured number of devices does not match the
number of devices that are actually included in the
ISOnet interconnection.
• Check settings
• Check Ethernet connection