Spectrum Controls 1769sc-IF8u - Manual (Page 67)

Chapter 5: Diagnostics and Troubleshooting 57
Chapter 5
Diagnostics and Troubleshooting
This chapter describes troubleshooting the universal input module. This
chapter contains information on:
safety considerations while troubleshooting
internal diagnostics during module operation
module errors
contacting Spectrum Controls, Inc. for technical assistance
Safety
Considerations
Safety considerations are an important element of proper troubleshooting
procedures. Actively thinking about the safety of yourself and others, as
well as the condition of your equipment, is of primary importance.
The following sections describe several safety concerns you should be
aware of when troubleshooting your control system.
! ATTENTION! Ne Ne Ne Ne Nevvvvver r er r er r er r er reac eac eac eac each into a mac h into a mac h into a mac h into a mac h into a machine to hine to hine to hine to hine to
actuate a switch because unexpected motion actuate a switch because unexpected motion actuate a switch because unexpected motion actuate a switch because unexpected motion actuate a switch because unexpected motion
can occur and cause injur can occur and cause injur can occur and cause injur can occur and cause injur can occur and cause injur yyyyy..... R R R R Remo emo emo emo emovvvvve all e all e all e all e all
electrical power at the main power disconnect electrical power at the main power disconnect electrical power at the main power disconnect electrical power at the main power disconnect electrical power at the main power disconnect
switches before checking electrical switches before checking electrical switches before checking electrical switches before checking electrical switches before checking electrical
connections or inputs/ outputs causing machine connections or inputs/ outputs causing machine connections or inputs/ outputs causing machine connections or inputs/ outputs causing machine connections or inputs/ outputs causing machine
m o t i o n . m o t i o n . m o t i o n . m o t i o n . m o t i o n .
Indicator Lights
When the green LED on the module is illuminated, it indicates that power
is applied to the module and that it has passed its internal tests.
Stand Clear of Equipment
When troubleshooting any system problem, have all personnel remain clear
of the equipment. The problem could be intermittent, and sudden
unexpected machine motion could occur. Have someone ready to operate
an emergency stop switch in case it becomes necessary to shut off power.
Program Alteration
There are several possible causes of alteration to the user program,
including extreme environmental conditions, Electromagnetic Interference