Magnum Energy ME-MR Series Owner's Manual page 16

Setup
SETUP: 07 VAC Dropout - Used to select the minimum AC voltage
that must be present on the input before the inverter/charger switches from
inverter to charger mode. For example: If this setting is set to Dropout = 60
VAC, then the AC input voltage must be above 60 Volts before the inverter
will switch from inverter mode to charge mode. This setting also determines
the minimum AC voltage threshold where the inverter/charger transfers from
the AC input (utility/shore or generator) and begin inverting. This protects
AC loads from utility outages. For example: If this setting is set to Dropout =
60 VAC, when the AC input voltage drops to 60 volts, the inverter will switch
from charge mode to inverter mode. Selections are Dropout = 60 VAC to
Dropout = 100 VAC for 120v units (i.e. North American units), and 110 VAC
to 190 VAC for 230v (i.e. export).
Default setting: Dropout = 80 VAC for North American units, 150 VAC for
Export products.
Where do I set my VAC Dropout? It depends on the application and what
you are using as the AC source. The settings not only look at the incoming
voltage to determine when to transfer, but also determines the response
sensitivity to incoming voltage fl uctuations. Use a VAC Dropout setting above
80 VAC (>80 VAC) when the AC source is well regulated and operating devices
that are sensitive to voltage fl uctuations. These settings are intolerant of volt-
age fl uctuations and provide a quicker transfer. The transfer time from charge
mode to inverter mode is about 16 milliseconds when using these settings
(Dropout = 80 VAC to Dropout = 100 VAC). Use the 80 VAC or lower setting
(≤80 VAC) when the AC source may have signifi cant fl uctuations in RMS volt-
age. These settings are highly recommended if using a generator for charging.
The transfer time from charge mode to inverter mode is >16 milliseconds
when using these settings (Dropout = 60 VAC to Dropout = 80 VAC).
Bottom line show s
current "saved" setting
VAC DROP
M EN U
80 VAC
H O M E
If this setting is correct , press
men u button to access
different m enu item s
press
VAC DROP
60 VAC
Figure 3-7, SETUP: 06 VAC Dropout Selections
14
If a different setting is
required:
O N / O F F
C H A N G E
press
VAC DROP
.......
.......
80 VAC
©2009 Magnum Energy Inc.
T o save the current
setting displayed :
SA VE
H O L D
press
VAC DROP
100 VAC