Magnum Energy ME-RC Remote - Manual (Page 32)

25 ©2013 Magnum Energy, Inc.
3.0 Setup
Where should I 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 to set your battery charge rate. For spe-
cifi c charge rate requirements, refer to your battery’s manufacturer.
Info: If multiple inverter/chargers are used on a single battery bank,
you must ensure that the total charge rate from all inverter/char-
gers is limited to the maximum charge rate needed for your battery
bank. The maximum Charge Rate setting 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).
Press to save
SETUP
Press
Status...
05 Charge Rate
Rotate to
Press to select
Rotate to
desired
selection:
Range: 0-100% (increments 10%)
Figure 3-12, SETUP: 05 Charge Rate Selections
• SETUP: 05 Charge Rate – Sets the maximum charge rate allowed
to charge the batteries during Bulk, Absorption, Float, and Equalize
charging. The Max Charge = 0% setting helps 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 the label on the side of
the inverter (or owner’s manual) to determine the inverter’s maximum
charge rate. Once you fi nd this maximum charge rate, determine the
percentage needed to limit the charge rate to your battery bank.
Default setting: Max Charge = 80%
Range: 0-100%
Note: If “CC/CV Controlled” displays on this menu’s screen, you will not be
able to adjust the settings as “CC/CV” has been selected as the battery type
from the 04 Battery Type menu.
Example: The maximum charge rate of your inverter/charger is 120
amps and you need to limit the charge rate to 72 amps. Choose the
Max Charge = 60% setting (72 amps = 60% of 120 amps) .
Info: If Max Charge = 0%, the topology of the inverter—when
connected to an AC source—will override the 0% setting and start
charging if the battery voltage is <11 VDC (12v models), <22 VDC
(24v models), or <44 VDC (48v models).