© 2012 Magnum Energy, Inc.
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3.0 Setup
begins to operate in parallel with the incoming utility power to support
the inverter loads (i.e., Load Support Mode
¹
). Typically, set to the size
of the AC circuit breaker that feeds the AC1 input.
Default setting:
30 Amps
Range:
5-60 Amps
Set AC2 Input Amps
– This setting determines the AC amps level at
which the MSH4024RE inverter/charger begins to back off the battery
charger to reduce the load on the incoming generator power (that is
connected to the AC2 input) in order to continue powering the inverter
loads. This setting also determines when the MSH4024RE begins to
operate in parallel with the incoming generator power to support the
inverter loads (i.e., Load Support Mode
¹
). Typically, this is set to the size
of the generator’s circuit breaker that feeds the inverter AC2 input, or to
the maximum output amperage ability of the generator.
Default setting:
20 Amps
Range:
5-60 Amps
Where should I set AC Input Amps?
This setting controls the input current
differently depending on the inverter/charger model and the AC input wiring
con
fi
guration. Set as described below for your particular model:
ME, MS, and RD Series:
These models have two inputs (HOT IN 1 and HOT
IN 2), but the current is only monitored on HOT IN 1. On these models—
when wired as a dual-in con
fi
guration or as a single-in con
fi
guration with
only the HOT IN 1 connected—the
AC Input Amps
setting should be set to
the size of the AC circuit breaker that feeds the HOT IN 1 input. On these
models, when wired as a single-in con
fi
guration with HOT IN 1 and HOT IN
2 jumped together, set the
AC Input Amps
setting to half (x½) the input
breaker size—as ½ the current will pass through HOT IN 1 and the other
½ through HOT IN 2 simultaneously.
MS-AE and MS-PAE Series:
These models have two inputs (HOT IN 1
and HOT IN 2), with the current monitored on each input at the same
time. On these models, since the input is from a single AC source, both of
the input currents are added together and divided in half to determine the
AC Input Amps
setting. Whether the input circuit breaker is a dual-pole
(120/240 VAC input) or a single-pole (120 VAC only), set the
AC Input
Amps
setting to the value of only one of the breaker poles (i.e. 30A dual-
pole = 30A setting, 30A single-pole = 30A setting).
MS-E, MS-PE, MSH-RE and MSH-M Series:
These models may have
one (AC1) or two (AC2) inputs, with the current monitored on each input
separately. On these models, set the
AC Input Amps
setting to match the
input AC circuit breaker size.
MM, MM-AE and MMS Series (and any export version of these
models):
These models do not monitor current on the input, therefore
cannot bene
fi
t from the
AC Input Amps
setting or feature. On these
models, the
AC Input Amps
setting may be displayed and allow selection/
adjustment, but will not do anything to reduce the battery charger current.
Note¹:
The MS Hybrid (MSH) Series inverter/chargers have Load Support
Mode, which allows the inverter power to operate in parallel with the incoming
AC power (Grid or Gen). This feature uses additional power from the inverter’s
battery to run loads greater than what the incoming AC power can run alone,
and prioritizes the power of any external DC source (i.e., solar, wind, etc.)
over the incoming AC power to run inverter loads. For more information, see
the Load Support Mode section in the MSH Owner’s Manual.
