Magnum Energy Series Stacking Cable Kit (ME-SSI) - Manual (Page 20)

©
2010 Magnum Energy, Inc.
Operation
When two inverters are series stacked and inverting, they coor-
dinate with each other to ensure the output can power 240VAC
loads. This requires that the inverters turn on together and switch
to the AC source at the same time; and, both inverters should shut
down if either one becomes inoperable. This Operation section
provides a functional test to ensure the two inverters are working
together as a series stacked pair, and also provides information
pertinent to the set-up and operation of a series stacked confi gura-
tion.
Using the Remote Control
The default settings in your inverter are adequate for most
installations; however, in a series stacked confi guration we highly
recommend using the ME-RC50 or ME-ARC50 remote controls.
These remote controls can be used to monitor the inverter’s status
and make set-up changes. A single remote can be used to confi g-
ure each inverter, but not at the same time. If you want the ability
to monitor and confi gure both units at the same time, each invert-
er will require its own remote.
Info: To use a remote control, it must have revision
1.2 or higher to work properly with a series stacked
confi guration.
Functional Test
Series stacked inverters must communicate together to provide
120/240VAC to the loads and shut down if any inverter faults oc-
cur. This functional test will confi rm the two units are operating
correctly as a series stacked pair. Before performing the functional
test, ensure the following:
All DC disconnects to the inverters are turned off.
All AC input and output circuit breakers are turned off.
Only the stacker cable provided in the ME-SSI is used.
The stacker cable is connected to each inverter’s Stack Port
(red label).
Only MS4024 inverter models are stacked together.
NEUT OUT of both inverters are connected to the same neutral
bus.
DC and AC grounds are both connected and properly installed.
AC input connections and AC output connections are wired
correctly on the terminal block and not reversed (double-check
before turn-on).
All DC connections are properly connected and tight.
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Operation
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