Contax SW 2524 - REV A Guía de instalación descargar pdf (Pagina 51)

Multiple Unit Configuration

975-0637-01-01 Rev B 1–33

This guide for use by qualified personnel only

Search Mode Operation in Multiple Unit Configuration

When two inverter/chargers are configured, search mode behavior on the Slave

unit is modified and is dependent on how much total load is on the system.

Disabling Search Mode on the Master Unit

Search mode on the Master unit will not function properly. When the Master

sends out a load search pulse, a small current also flows into the output of the

Slave unit since the two outputs are in parallel. This Master unit falsely detects a

load causing erratic search mode operation. For this reason, it is highly

recommended to disable search mode on the Master unit.

Setting Search Mode on the Slave Unit

The Slave unit will behave in one of two ways depending on whether its search

mode is enabled or disabled.

Search mode enabled This is the recommended mode which helps minimize

battery draw. The Slave unit continuously monitors the output of the Master unit. If

the Master unit has more than 60% of the rated load (for example, 2100 watts on

SW 4024 230), the Slave unit will assist the Master and the two will share the load

equally. Should the load on the Master drop below 20% of rated load (700 watts

for SW 4024 230), the Slave unit disengages and returns to a waiting state.

Search mode disabled The Slave unit operates continuously along with the

Master unit and shares the load.

Wiring Schematic

NOTE: Please refer to “Multiple Unit Configuration” on page 1–29 that shows the

wiring schematic employed between two Conext SW inverter/chargers.

IMPORTANT: Follow the same guidelines in “Inverter/Charger Installation” on

page 1–17 when choosing cables and/or wires for AC and DC connections.

WARNING

FIRE, ELECTRICAL SHOCK, AND EXPLOSION HAZARD

Make sure all wiring being used to make multiple unit configurations between

inverter/chargers is disconnected (physically or by opening and locking out

the breaker) from all electrical sources before handling. All wiring must be

done in accordance with local and national electrical wiring codes.

Failure to follow these instructions will result in death or serious injury.

ConextSWEUROInstallationGuide.book Page 33 Wednesday, December 5, 2012 10:55 AM

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Contax SW 2524 - REV A Guía de instalación Pagina 51