Auxiliary Output; Transfer Relay; K1 And K2 Relay - Conext XW+ 6848 NA Owner's Manual

Introduction
AC Transfer
Multiple Conext XW+ units monitor each other to determine the quality of AC input. If AC
input is deemed to be bad by any of the paralleled units, no transfer to AC Out occurs
and the AC LED continues to flash on each unit's information panel until the AC is
qualified by all. If the system was in passthrough and AC fails on any unit, all units
transfer to invert simultaneously.
Faults
When the Conext XW+ detects a fault condition, the fault is displayed on the Conext
XW+. The Conext XW+ also turns on the Fault light on the Conext XW+ and inverter
information panel. A fault affects the operation of the unit. See "Fault Types" on page 4–
14 for an explanation of the different fault types.
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Independent Operation of Features Each Conext XW+ grid-interactive feature (e.g.
enhanced grid support, grid sell, load shave and generator support) operates
independently. This enables Conext XW+ units in a multi-unit system to be configured to
perform multiple functions independently and allows greater flexibility in operating the
entire system.

Auxiliary Output

Each Conext XW+ has one programmable 12 V, 0.25 A auxiliary output that is able to
run a small fan or operate an external relay to perform other functions. Examples
include remotely starting a two-wire start generator in cases where the Xanbus-enabled
Conext AGS is not used, disconnecting external non-critical loads, or turning on a
diversion load for battery voltage regulation. See "Auxiliary Output Settings" on page 3–
37 for programme parameters.

Transfer Relay

The built-in transfer relay is rated for 60 amps. When an external AC source is detected
and qualified on either of the AC1 or AC2 inputs, the relay transfers loads from the
Conext XW+ to the external power source, and then activates the battery charger. Multi-
unit systems of three or more require the use of an external AC contactor to manage the
AC bus.

K1 and K2 relay

The Conext XW+ design does not allow the K1 and K2 relays to close simultaneously.
This design helps stop the generator input (AC2) from back feeding to the utility grid
(AC1).
1–10
When a single Conext XW+ slave unit in a multi-unit system has a fault, only the
affected device shuts down.
When a master unit has an invert mode fault that causes it to stop inverting, it is
considered a system-wide fault and all units shut down. Invert mode faults on slave
units only shut down the affected slave unit.
All units shut down when there is a battery-related fault such as battery over-
temperature or over-voltage.
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