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iso685-x-B_D00177_07_M_XXEN/07.2019
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13. Alarm messages
13.1 Measured value alarms
Alarm messages are activated directly after switching on and can occur immediately.
13.2 General
Alarm messages are activated directly after switching on and can occur immediately.
Alarm message
Description
Measures
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
• Reset fault message by pressing the reset button
"ALARM 1" is lit
Insulation fault
An insulation fault exists. The insulation resistance falls
below the response value
R
an2
.
• Eliminate insulation fault in the system being monitored
• Reset fault message by pressing the reset button
"ALARM 2" is lit
DC offset voltage
There is a DC offset voltage in the system.
• Check insulation fault and eliminate fault of DC compo-
nents
Alarm message
Description
Measures
LED indicators
Undervoltage
Operating outside the specified supply voltage range
• Check supply voltage
Overvoltage
Operating outside the specified supply voltage range
• Check supply voltage
Check L1-L2-L3 for correct
connection!
No low-resistance connection between the
line conductors^
• Check the wiring of terminals "L1/+", "L2" and "L3/-" to the
IT system
• Press the TEST button
• Check nominal system voltage
• Check fuses
• Check set system type
"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
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 cha-
racteristics
Load on X1 too high!
Sum of the external loads on "X1" too high
• Check load on X1.+, X1.Q1 and X1.Q2
• Check ambient temperature
Check date and time!
Date and time have not been set yet
• Set local date and time
(in case of voltage failure buffer for three days)
No DHCP server found!
Connection problem at the Ethernet interface
• Check cable connection at the Ethernet interface
• Check the DHCP server availability
• Check the DHCP interface configuration in the device