EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 54 of 107
Relay 1
Relay 2
Generator ON
Condition met
Generator OFF
Condition met
Ton
Toff
In any case, if stop conditions is not met i.e. Battery SOC does not reach at its Stop SOC Threshold or Battery
Voltage does not reach at its Stop Voltage Threshold, but DG Run Timeout (4 hours by default) is over, then
EC500 will start Generator off sequence.
EC500 can also monitor one potential free input to sense generator run condition provided by generator. A
generator fail alarm is activated if EC500 does not detect ac supply (rectifiers have turned on) or does not
sense the digital input, once generator Relays have been activated.
A digital input can be mapped to monitor generator run status. On activation of this input,
controller applies alternate battery current limit and enables DG energy and run hour
counters.
Configuration
Set the following parameters:
Parameter
Description
Where to find:
DG Control
Enable or Disable the Generator control. Generator
configuration parameters are visible only when DG
control is set to enable. This is a configuration
setting.
Display:
Menu>System Config
>System Info>DG Control
Web:
Menu>System config
>System Info>DG Control
Drive ON Delay
Time delay between Relay 1 activation and Relay 2
activation at the time of generator ON condition.
Display:
Menu>Settings>DG Settings
Web:
Menu>Settings>DG Settings
Drive OFF Delay
Time delay between Relay 2 de-activation and Relay
1 de-activation at the time of generator OFF
condition.
DG Max Run
Timeout
The maximum run time of generator, whatever is the
status of battery SOC and battery voltage, if this
timeout expires then generator will be turned off.
DG Function SOC
Based
If enabled, controls generator On or Off as per the
battery SOC threshold.
Start SOC
Generators is turned On if Battery SOC falls below
this threshold limit; default 40% of battery capacity.