900-0128-01-00 Rev B
1
Radian Series
Inverter/Charger Service Instructions
Purpose and Scope
These instructions detail how to replace the following parts of a Radian Series Inverter/Charger.
PCBA Module (SPARE-200 and SPARE-202)
The PCBA Module is a set of circuit boards that allows
connection of the AC wires, MATE3, Auxiliary, and Remote Temperature Sensor (RTS) cables as well as
connection to the Power Module. They are pre-assembled for simple drop-in replacement. These
circuit boards include the power supply, control, voltage/current sense, and AC boards along with a
mounting plate.
Power Module (SPARE-201 and SPARE-203):
The Power Module is a set of parts that allow
connection to the battery and connection to the PCBA Module. It is pre-assembled for simple drop-in
replacement. Either module consists of the power transformer, FET board, and related interconnect
components within one chassis.
Fan:
This is a replacement part for the cooling fan inside the Power Module.
IMPORTANT: Back up (SAVE) the Configuration on the MATE3
Use the MATE3 to save the existing configuration file of the inverter that is to be repaired
to an SD card. (If there are multiple inverters in the configuration, the configuration file
will back up each inverter’s settings.) Also record the firmware revision and Stack Phase
settings of the inverter(s). If replacing the PCBA Module, performing these tasks will be
helpful to return the inverter to its previous operational parameters. See the
MATE3 System
Display and Controller Operator’s Manual
for details.
Power Down
Power down and disconnect all power sources from the Radian inverter prior to replacement of
internal parts. Use the inverter bypass if available and turn off all circuit breakers connected to the
inverter.
AC output circuit breaker
Grid AC input circuit breaker
Generator AC input circuit breaker
Two DC circuit breakers
Automatic Generator Start circuit
Once these connections are turned off, verify with a voltmeter that NO voltage is present at the
DC+ to DC– terminals (see Figure 1).
WARNING: Shock Hazard and Equipment Damage
It may take time for internal capacitance to fully discharge. Ensure full discharge for at
least one minute (less that 1 Vdc) prior to continuing. If the ribbon cables (see page 3)
are removed prematurely, the Radian’s capacitors will retain a sizable charge, which can
cause electrical shock or severe equipment damage during normal handling. This
damage is not covered under the unit’s warranty.