Installation Guide

Planning
10 900-0160-01-01 Rev B
Input Modes
The Radian inverter has many modes of operation. See the
Radian Series Inverter/Charger
Operator’s Manual
for additional information on these modes, including reasons and considerations
for using each mode.
The modes determine how the inverter interacts with an AC source. Each mode has functions and
priorities that are intended for a designated application. Each of the Radian’s two AC inputs can be
set to a different operating mode to support different applications.

Generator
: This mode enables the battery charging function to tolerate a wider range of generator
performance and waveform irregularities than other modes. The Radian can use generator power even
when the generator is substandard.

Support
: This mode is intended for systems using utility grid or a generator. In some cases the amount
of current available from the source is limited due to size, wiring, or other reasons. If large loads need to
be run, the Radian inverter augments (supports) the AC source. The inverter uses battery power and
additional sources to ensure that the loads receive the power they demand.

Grid Tied
: This mode is intended for grid-interactive systems that are net metered. Once the battery is
charged and protected loads are serve, the inverter will export power to the utility grid. Grid support
functionality is available in this mode.

UPS
: This mode is intended for systems primarily intended to maintain power to the loads without any
interruption when switching between AC input and batteries. The response speed has been increased so
that if an AC disconnect occurs the response time will be minimized.

Backup
: This mode is intended for systems that have the utility grid or a generator available, but do not
have specialty requirements such as selling or support. The AC source will flow through the Radian
inverter to power the loads unless power is lost. If power is lost, then the Radian inverter will supply
energy to the loads from the battery bank until the AC source returns.

Mini Grid
: This mode is intended for systems that have the utility grid as an input and a sizable amount
of renewable energy. It behaves like an off-grid system using the utility grid as a backup generator. The
system will use the renewable energy until the battery voltage falls to a specified low level. When this
occurs, the Radian inverter will connect to the utility grid to power the loads. The inverter will disconnect
from the utility grid when the batteries are sufficiently recharged.

GridZero:
This mode is intended for systems that have the utility grid as an input and a sizable amount of
renewable energy. The loads will remain connected to the utility grid, but will only draw power from it
when no other power is available. The default power sources are the batteries and renewable energy,
which attempt to “zero” the use of the AC source. This mode does not allow the inverter to charge
batteries or sell. The batteries are discharged and recharged while remaining grid-connected.
Grid support functionality is available in this mode.
See the
Radian Series Inverter/Charger Operator’s Manual
for additional information on these
modes, including the reasons and considerations for using each mode.
Programming
Selection of the input modes and all other inverter programming are performed using a system
display such as the MATE3s. This product can customize a wide range of parameters.