Outback Power Systems Radian Installation Instructions

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, SPARE-202 and SPARE-204):

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, SPARE-203 and SPARE-205):

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.

The PCBA Module is a set of circuit boards that allows

The Power Module is a set of parts that allow

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.

IMPORTANT: MATE3 Upgrade

When replacing the PCBA Module, make certain to upgrade the MATE3 firmware to the
latest revision. If it is not upgraded, the MATE3 may not recognize any new inverter
functions. This will make them inaccessible to the user. See the OutBack website,
www.outbackpower.com, for the latest firmware revisions.

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



DC circuit breakers



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 than 1 Vdc) prior to continuing. If the ribbon cables (see Figure 4)
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.

900-0128-01-00 Rev C

1

Radian Series

DC + Terminal

DC – Terminal

DC – Terminal

DC + Terminal

Figure 1 DC Terminals



Verify no AC voltage is present between the following terminals and ground. These connections may be located in
an electrical distribution box near the inverter. Some systems have no “L2” terminals.

~ AC OUT HOT L1 ~ GRID IN HOT L2
~ AC OUT HOT L2 ~ GEN IN HOT L1
~ GRID IN HOT L1 ~ GEN IN HOT L2

Removal of Cover

Tools



Phillips screwdriver

Procedure

To remove the front cover:

1. Use a Phillips screwdriver to remove the screws that attach the cover to the chassis.

2. Pull cover directly out from the chassis.

3. Set aside the cover and the cover screws.

Remove screws (x22)

Figure 2 Radian Inverter With Cover and Without Cover

2 900-0128-01-00 Rev C

Part Replacement Instructions

Replacement of the PCBA Module

IMPORTANT: MATE3 Upgrade

When replacing the PCBA Module, make certain to upgrade the MATE3 firmware to the
latest revision. If it is not upgraded, the MATE3 may not recognize any new inverter
functions. This will make them inaccessible to the user. See the OutBack website,
www.outbackpower.com, for the latest firmware revisions.

Tools



Flat screwdriver with small head (4 mm wide or less)



Socket wrench with 8-inch extension and 10 mm socket

Procedure

To replace the PCBA Module:

1. Disconnect all connections to the Auxiliary terminals, MATE3, and RTS connectors. The connection to the MATE3 is
labeled “Remote” on the control board. The connection to the RTS is labeled “Battery Temp” on the control board.

2. Disconnect the external AC input and output wiring by unlocking the tabs on the terminal block (pulling them to a
perpendicular position so that they stand out from the board). Unlocking each tab releases the tension on the wire.
Pull the wires free from the terminals.

3. The Power Module may have either four or six transformer wires connected to the PCBA Module, depending on
Radian model (see image A in Figure 3). Additionally, the Radian models use different types of terminal blocks to
secure the transformer wires.

Note the locations of the wires for later reference. If possible, take a photograph of the wire placement prior to
disconnection. For some Radian models the type of terminal block shows markings on the terminal blocks
(L1=Black, L2=Red, N=Neutral) and below them on the circuit board (RIGHT XFMR, LEFT XFMR and NEUTRALS) that
identify the correct connections. For other Radian models there are only markings on the circuit board (L2-L, NEU-L,
L1-L, L2-R, NEU-R, L1-R) that identify the correct connections. Refer to Table 1 for model-specific locations of the
transformer wires, fan wires and ribbon cables.

NOTE: Models with only four wires do not have L2 connections or any NEUTRALS circuit board marking.

4. Disconnect these wires by one of two methods, depending on the type of terminal strip. If the terminal strip has
locking tabs, unlock them just as in Step 2. (See image B in Figure 3.) Pull the wires free from the terminals.

If the terminal block does not have locking tabs, insert the screwdriver horizontally into the terminal block slot for
each wire. Lever the screwdriver outward (from the back of the housing to the front). This releases the tension on
the wires. Pull the wires free from the terminals. (See image C in Figure 3.)

A

Fan Terminals

(x2)

Transformer
Terminals

B

Tab Slot

C

Figure 3 Transformer and Fan Terminals

5. Disconnect the fan wires by pinching their connectors and pulling to the right. Note the text on the circuit board
that shows the correct connections (FAN RIGHT and FAN LEFT).

900-0128-01-00 Rev C

3