EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 22 of 107
SYSTEM OPERATION
OVERVIEW
Topic
Page
Alarms
BATTERY AND VOLTAGE CONTROL
The output voltage of the rectifiers is controlled by a number of control processes. The EC500 provides CC/CV
charging and can achieve typical three stage charging of a VRLA battery i.e. constant-current charge, topping charge
and float. The EC500 can also achieve CC/CV two stage charging for a Li-ION battery. Note that Li-Ion battery typically
does not require Float mode. The following diagram shows the various control processes, measured values and
operating values that determine the rectifier output voltage.
If ac fails, then any active control process stops. No control process can start until the ac
supply is restored.
EC500 Supports both VRLA and Li-ION batteries. Monitoring & Configuration for both these batteries is
explained separately.
