5. COMMISSIONING
WARNING:
CONNECT BDM-300X2 TO THE ELECTRICAL UTILITY GRID ONLY AFTER RECEIVING
PRIOR APPROVAL FROM THE UTILITY COMPANY.
WARNING:
BE AWARE THAT ONLY QUALIFIED PERSONNEL CAN CONNECT BDM-300X2 TO
THE ELECTRICAL UTILITY GRID.
WARNING:
ENSURE THAT ALL AC AND DC WIRING IS CORRECT. ENSURE THAT NONE OF THE
AC AND DC WIRES IS PINCHED OR DAMAGED. ENSURE THAT ALL JUNCTION BOXES ARE
PROPERLY CLOSED.
Following these steps to commission the BDM-300X2 PV system:
1. Turn on the AC disconnects or circuit breakers on each BDM-300X2 AC branch
circuit.
2. Turn on the main u
�li
ty-grid AC circuit breaker. Your system will start producing
power a
�
er a few minutes wait
�
me.
3. The BDM-300X2 will start to send performance data over the power lines using
power line communica
�
on (PLC) to the BDG-256. The
�
me required for each BDM-
300X2 in the system to communicate to the BDG-256 will vary with the number of
BDM-300X2 in the system.
6. OPERATING INSTRUCTIONS
The BDM-300X2 is powered on when su
ffi
cient DC voltage from the module is
applied. The status LED will start
fl
ashing a
�
er su
ffi
cient DC power is applied as an
indica
�
on that the BDM-300X2 is live.
Status: standby
The LED light is on by 2 second, and o
ff
by 2 seconds
Red: in error.
O
range: no error, but not communicating to BDG-256
Green: no error, and communica
�
ng to BDG-256
Status: pr
o
ducing p
o
wer
The LED light is on by 1 second, and o
ff
by 1 second.
Orange: not communica
�
ng to BDG-256
Green: communica
�
ng to BDG-256
Status: gr
o
unding fault
The LED light is in
solid red
color.
In case of fault, BDM-250 has mul
�
ple protec
�v
e func
�
ons and stops output power.
The fault message may be sent to a connected BDG-256 gateway through power
line communica
�
on. The error message is displayed on the screen of BDG-256
gateway by a 16-bit error code.
Err
o
r c
o
de
Err
o
r
Bit-0
DC over voltage
Bit-1
DC under voltage
Bit-2
hardware error
Bit-3
Inverter over voltage
Bit-4
Frequency over
Bit-5
Frequency under
Bit-6
AC voltage RMS over
Bit-7
AC voltage RMS under
Bit-8
Peak AC voltage over
Bit-9
AC current RMS over
Bit-10
Peak AC current over
Bit-11
Temperature over
Bit-12
ADC error
Bit-13
GFDI fault indicator
Bit-14
Relay fault (BDM-250-AU/BDM-250-EU only)
Bit-15
PLC Communica
�
on Error
7. TROUBLESHOOTING AND MAINTENANCE
WARNING:
DO NOT ATTEMPT TO REPAIR THE BDM-300X2; IT CONTAINS NO USER-
SERVICEABLE PARTS. IF TROUBLESHOOTING METHODS FAIL, PLEASE RETURN THE BDM-300X2
TO YOUR DISTRIBUTOR FOR MAINTENANCE.
WARNING:
NEVER DISCONNECT THE DC WIRE CONNECTORS UNDER LOAD. ENSURE THAT
NO CURRENT IS FLOWING IN THE DC WIRES PRIOR TO DISCONNECTING. AN OPAQUE
COVERING MAY BE USED TO COVER THE MODULE PRIOR TO DISCONNECTING
WARNING:
BDM-300X2 IS POWERED BY DC POWER FROM PV MODULES. MAKE SURE YOU
DISCONNECT THE DC CONNECTIONS AND RECONNECT DC POWER TO WATCH FOR THE TWO
SECONDS LED ON AND TWO SECONDS LED OFF AFTER DC IS APPLIED.
11
10
