8.3.1.1
Changing the password from the LHMI
GUID-5A50512E-ECF6-4957-BE57-E11DE253DAAC v1
The password can only be changed for the active user.
1.
Press
.
2.
Select Change Password and press
to confirm.
IEC16000001-1-en.vsdx
IEC16000001 V1 EN-US
3.
Enter a new password using the on-screen keyboard.
To cancel password change, press
.
8.3.2
Identifying IED application problems
GUID-D8E1AECF-1FD8-4996-A447-948B52EAD0C2 v8
Navigate to the appropriate menu in the LHMI to identify possible problems.
•
Check that the function is on.
•
Check that the correct setting group (1 to 6) is activated.
•
Check if the function is blocked.
•
Check if the IED is in the test mode.
•
Check the measurement values.
•
Check the connections to trip and disturbance recorder functions.
•
Check the TRM channel settings.
•
Check the cycle time of the SMAI block.
•
Check the DFT reference of the SMAI block.
8.3.2.1
Inspecting the wiring
GUID-665B75A6-A074-4A03-ADF1-3D0FAD198E61 v8
The physical inspection of wiring connections often reveals the wrong connection
for phase currents or voltages. However, even though the phase current or voltage
connections to IED terminals might be correct, wrong polarity of one or more
measurement transformers can cause problems.
•
Check the current or voltage measurements and their phase information from
Main menu/Measurements/Analog primary values
or
Analog secondary
values
.
•
Check that the phase information and phase shift between phases is correct.
•
Correct the wiring if needed.
•
Change the parameter
Negation
in
Configuration/Analog modules/3
phase analog group/SMAIn:1
(n= the number of the SMAI used).
1MRK 500 128-UEN B
Section 8
Troubleshooting
650 series 2.2 IEC
81
Operation manual
