EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 53 of 107
Alarm Flow
The following diagram indicates various alarms types available and their input / output paths.
PFC Input Alarms
PFC input hardware
mapping
Dynamic Alarms
Hardware Attributes
{enable / disable, map,
sense}
PFC Alarm Logic:
1. Predefined functions
2. Pass through
Alarm Attributes
{name, delays, severity, snmp
trap}
System Alarms
Alarm Attributes
{severity, snmp trap}
40 Groups
{each alarm can be
mapped to any 2 groups}
PFC Outputs
PFC output
hardware
mapping
Hardware Attributes
{enable / disable, map}
User Alarms
User Alarms
Analog Alarms
System Alarms
Reference Parameter
Map to Group
One alarm can
be mapped to
2 groups
Analog Alarms
Compare Parameter,
Analog Inputs (V/I/T)
COMMON ALARM PARAMETERS
The following parameters are common to all alarms.
Parameter
Description
Where to find:
Enable Audible
Alarm Indication
Enable or disable the audible alarm indicator.
Display:
Home>Settings>System
Settings>Buzzer
Web:
Home>Settings>System
Settings>Buzzer
GENERATOR CONTROL
Generator control function is used to delay the start of a standby ac generator until the batteries are partially
discharged (rather than immediately after the ac supply fails). This can save fuel by preventing the generator
running during short ac supply failures.
Generator logic provides control for two digital outputs (relays) which can be used to control running and load
control of generator. EC500 provides option to start / stop generator based on Bus voltage and / or Battery
SOC. Once generator start condition is met it activates Relay 1 and after a user configured delay (Ton) activates
Relay 2. Relay 2 can be used to transfer load to generator. Once generator stop conditions are met, it de-
activates Relay 2 first and then deactivates Relay 1 after user configured delay (Toff). Below timing diagram
demonstrates the relay operation.
