Rockwell Automation Publication 193-UM013B-EN-P - December 2019 15
Chapter 3
Troubleshooting
This chapter helps you troubleshoot the E100™ Electronic Overload Relay by using the
diagnostic LED status indicators. It also guides you through troubleshooting associated
accessory modules.
E100 Electronic Overload
Relay
All E100 relay units include a trip indicator window on the front of the unit
labeled “Status”. If the red indicator is not visible, the overload relay is not
tripped. If the red indicator is visible, the overload relay is tripped.
Accessory Modules
Universal Protection Module and Remote Reset Module
The Universal Protection Module and the Remote Reset Module both include an
LED status indicator that shows the state of the E100 relay. The modules are
supplied with external power, so in the event of a fault event, the status LEDs still
operates.
ATTENTION: Servicing energized industrial control equipment can be
hazardous. Electrical shock, burns, or unintentional actuation of controlled
industrial equipment may cause death or serious injury. For safety of
maintenance personnel and others who may be exposed to electrical
hazards associated with the maintenance activities, follow the local safety-
related work practices (for example, the NFPA 70E, Part II, Electrical Safety
for Employee Workplaces, in the United States) when working on or near
energized equipment. Maintenance personnel must be trained in the safety
practices, procedures, and requirements that pertain to their respective job
assignments. Do not work alone on energized equipment.
ATTENTION: Do not attempt to defeat or override fault circuits. The cause of
a fault indication must be determined and corrected before attempting
operation. Failure to correct a control system or mechanical malfunction may
result in personal injury and/or equipment damage due to uncontrolled
machine system operation.
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