EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 23 of 107
VRLA BATTERY CHARGE PROFILE
To maximize life and performance of a VRLA battery it should be operated as per the battery manufacturer
’s
recommendations.
The EC500 has the following battery charge-related settings:
Configuration
Parameter
Description
Where to find:
Battery Capacity
Set to the rated 10 hour capacity of the installed
battery strings. Set it carefully as some parameters
are referenced and dependent upon this value.
Display:
Menu>Settings>Battery
Settings>General
Settings>Battery Capacity
Web:
Home>Settings>Battery
Settings>General
Settings>Battery Capacity
Battery Current
Limit (Normal)
BCL logic maintains the battery charge current
below this value, which is a percentage of the
installed C10 Battery Capacity.
Display:
Menu>Settings>Battery
Settings>Charge
Profile>CC/CV Mode
Web:
Home>Settings>Battery
Settings>Charge
Profile>CC/CV Mode
Battery Current
Limit (Alternate)
The Battery Current Limit setting when Engine Run
State is active.
Alternate Current Limit
is effective
only if a PFC Input is mapped to DG Sense Function.
If no PFC is mapped to this function, this limit is not
used. When mapped and if PFC input is Active,
Alternate Current Limit is applied.
Float Voltage
Set to the voltage required to maintain optimum
charge for battery at reference ambient
temperature.
Charge Voltage
Battery charge voltage as per battery manufacturer
specifications. Charge voltage is typically 55.2V for
48V VRLA battery.
Float to Charge
Threshold
Percentage of
Battery Capacity.
When battery charge current increases above this
threshold, the controller will put the battery in
Charge mode by setting target voltage equal to
“
Charge Voltage
”.
This is typically set to 3% and
should be less than “Charge to Float Threshold”.
Charge to Float
Threshold
Percentage of
Battery Capacity
.
When battery charge current falls below this
threshold, the controller will put the battery in Float
mode by setting target voltage equal to “
Float
Voltage
”. T
his is typically set to 5% and should be
greater than “
Float to Charge Threshold
”
Max. Charge
Temperature
If this function is Enabled and Battery temperature
reaches the Set temperature value, the controller
will abort the battery charging and maintain the
float voltage.
Max. Charge
Duration
If this function is Enabled and Battery Charging time
reaches the Set time value, the controller will abort
the battery charging and maintain the float voltage.
Please see additional parameters related to temperature compensation on page 26.
