Magnum Energy ME-RC Owner's Manual page 17

• SETUP: 05 Charge Rate - Used to set the maximum charge rate
allowed to charge the batteries during bulk, absorption, float and equalize
charging. Selections are 'Max Charge = 0%' up to 'Max Charge = 100%.
The Max Charge = 0% setting is available to help minimize charging while
continuing to allow pass-thru power. The rest of the selections are provided
to limit the charge rate to the battery bank, which helps prevent battery
overheating caused by charging at too high a charge rate.
The Max Charge selections are provided as a percentage of the inverter/
charger's maximum charging capability. Refer to label on the side of the
inverter or the operator's manual for the inverter/charger to determine its
maximum charge rate. Once you find this maximum charge rate, determine
the percentage needed to limit the charge rate to your battery-bank.
For example, if the maximum charge rate of your inverter/charger is 100 amps
and you need to limit the charge rate to 50 amps, choose the Max Charge =
50% selection (50 amps = 50% of 100
Default setting: Max Charge = 80%
SETU P
Status...
05 Charge Rate
press
Status ...
Max Charge = 0%
Figure 3-10, SETUP: 05 Charge Rate Selections
Info: If the Max Charge rate is set to 0%, the topology of the Magnum
Inverter - when connected to an AC source - will over-ride the 0%
setting and start charging if the battery voltage is <7 VDC (12 VDC
models), <14 VDC (24-volt models) or <28 VDC (48-volt models).
How do I determine where to set my maximum charge rate? The
maximum charge rate is generally set to a C/5* rate (C = the total amp-
hour capacity of the battery bank - using the 20-hour AH rate). The C/5 rate
is usually used when the objective is to charge the batteries as quickly as
possible (i.e. 400 AH ÷ 5 = 80 amp maximum charge rate). A lower rate such
as C/20* is used when the batteries need to be charged as slow as possible.
CAUTION: The C/5 or C/20 charge rate settings are guidelines; they
are not requirements on how you should set your battery charge
rate. For specific charge rate requirements, refer to your battery
manufacturer.
Info: If multiple inverter/charger's are used on a single battery bank,
you must ensure that the total charge rate from all inverter/chargers
is limited to the maximum charge rate needed for your battery bank.
The Max Charge rate only limits the charging on each inverter/charger
individually, not on all inverter/chargers.
* C/5 or C/20 rate - Charge rates are commonly expressed as a ratio of the total
amp-hour (AH) capacity of the battery bank. For example, with a 400 AH battery
bank (C = 400), the C/5 charge rate is 80 A (400/5 = 80 A).
©2009 Magnum Energy Inc.
rotate to
press to select
Status ...
.......
Max Charge= 10%
amps).
rotate to
desired
selection :
Status... Status...
Max Charge= 80% Max Charge= 90%
3.0 Setup
press to save
Status...
Max Charge= 100%
3