Troubleshooting; Internal Webserver And Wireless Communication Troubleshooting - ABB UNO-DM-TL-PLUS-US Product Manual

T
roubleshooting
Operations on the inverter to identify and address any faults may only be performed by the
installer or by qualified personnel.
I
nternal Webserver and wireless communication troubleshooting
The following table gives a list of main and most common errors or problems relating to the
wireless communication between inverter and user devices.
Problem
The internal webserver cannot be
accessed.
The inverter is able to identify a wire-
less network but is unable to connect
to it.
The Inverter has not identified the wi-
reless network to which connection
is required.
The wireless board does not com-
municate correctly with the inverter
inside of which it is installed (incon-
sistency in the detected data read by
the board), or when working in "Ac-
cess Point Mode", it's not possible to
access the internal webserver.
Alternating difficulties in the local
connection to the internal webserver.
Possible causes
ADMIN or USER password forgotten.
The signal between the inverter and the
wireless router to which the board wants
to connect is too weak.
The wireless network to which the inver-
ter is to be connected, could require the
user to enter a username and password
to allow navigation (for example, with a
public wireless network or a hotel).
The wireless network to which the Inver-
ter is to be connected, is set so as not to
be identified (hidden network).
The signal between the inverter and the
wireless router to which the board wants
to connect is too weak.
The wireless board of the inverter could
be damaged.
Wrong Inverter Date/Time settings.
The inverter might not be correctly po-
wered (for example, if the inverter is
switched off at night, the internal webser-
ver cannot be accessed).
The wireless connection signal between
the device in use and the router or the In-
verter, may not have sufficient power or
it may be disturbed by obstacles which
affect the communication.
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Solution
Reset the passwords by clicking on "Forgot your password"; The
passwords can be reset after having entered the "Product Key"
code that can be found on the "Wireless Identification Label".
Modify the position of the wireless antenna, the inverter or the
router.
Make sure that the inverter has not been installed near obsta-
cles which could affect the communication with the wireless
router (for example: metal cages or walls, walls in reinforced
concrete, electromagnetic fields).
Move the router as close as possible to the inverter.
Install a wireless signal repeater in order to extend the network
to which the inverter is to be connected; then connect the inver-
ter to the repeater.
Unfortunately the inverter cannot be connected to these types
of wireless networks. Connect the inverter to an alternative wi-
reless network.
The Inverter is not able to connect to a hidden network. Set the
wireless network to which the inverter is to be connected (visible
network), then identify and connect the Inverter to the wireless
network as normal.
Modify the position of the wireless antenna, the inverter or the
router.
Make sure that the inverter has not been installed near obsta-
cles which could affect the communication with the wireless
router (for example: metal cages or walls, walls in reinforced
concrete, electromagnetic fields).
Move the router as close as possible to the inverter.
Install a wireless signal repeater in order to extend the network
to which the inverter is to be connected; then connect the inver-
ter to the repeater.
Request a service intervention to check that the inverter wire-
less board is working correctly.
Check if Date/Time has correctly set on the inverter; correct it
if necessary.
Access to the internal webserver only when the inverter is cor-
rectly powered.
Make sure that the signal between the wireless devices which
interact with the inverter are sufficiently high and that any obsta-
cles such as metal cages or walls, walls in reinforced concrete
or strong electromagnetic fields do not affect communication.
8 - Maintenance