ABB CDD Product Manual page 47

Display code Cause
LED status
Message
E051 The set grid standard is not com-
Solid red patible with the firmware installed
Country Not on the MICRO inverter. This
Comp condition may be generated if a
MICRO inverter is replaced.
E052 The alarm is generated when the
Solid red grid standard (selected on the
Country CDD during installation) has not
mismatch been correctly set on the MICRO
inverters. This may be caused by:
a) communication problems while
setting the grid standard for the
MICRO inverter from the CDD:
b) poor irradiance while setting
the grid standard for the MICRO
inverter from the CDD: MICRO
inverters are directly supplied
by the voltage generated at the
panel, and poor irradiance may
cause inverter shut downs
E501 The alarm is generated when
Blinking the CDD device does not receive
green messages from the MICRO-in-
Communica- verter for more than 15 minutes.
tion fault This may be caused by non-opti-
mal positioning of the CDD.
W001 This alarm is displayed when the
Blinking input voltage generated at the PV
green generator is outside the allowed
Vpanel Prob- range given in the technical data.
lem This may be caused by:
a) Poor sunlight
b) Possible shadows that may
darken the module during part of
the day.
b) PV module incompatible with
the MICRO inverter input param-
eters
d) Internal inverter fault
Solution
The firmware in the MICRO inverter/s
in the installation must be updated to a
compatible version. Firmware updates
are performed via the Internal Web
Server (see the CDD manual), with the
software package obtained from cus-
tomer service.
a) Verify on the Internal Web Server
(as described in the CDD manual),
the radio communication quality on
each MICRO inverter (values above
60% indicate good reception). If the
quality of the received signal is good
re-configure the installation, otherwise
consider installing the CDD device in a
different position to ensure better radio
signal quality.
b) System configuration must be
carried out in good irradiance condi-
tions, in order to guarantee the correct
operation of the MICRO inverter and to
prevent the risk of shut-downs due to
insufficient input voltage generated by
the PV module.
Consider a new installation position
that ensures better communication
between the CDD device and the MI-
CRO-inverters. Use the CDD Internal
Web Server to verify the signal quality
(refer to the CDD manual for informa-
tion on the Internal Web Server)
a) Wait for appropriate sunlight to
guarantee correct operation of the
inverter
b) Verify that no shadows are present
on the PV module when the error is
generated
c) Verify that the PV module voltage
characteristics are compatible with the
inverter input specifications.
d) If the above checks have yielded
positive results, yet the error persists,
the malfunction may be caused by the
MICRO inverter.
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7 - Appendix