ETL600 1KHW001489-EN ABB Switzerland Ltd
9. TROUBLESHOOTING
In case of failure of communications between the two stations of the
PLC link, the fault could either be caused by the power line itself,
either or both of the PLC equipment or the coupling arrangement. A
systematic approach helps in tracking the fault in the shortest possible
time.
9.1. Safety instructions
Personnel qualification
DANGER
An authorized and properly trained personnel only is
admitted to carry out installing, programming,
commissioning, maintenance, troubleshooting and
work of the equipment.
Mechanical Installation
DANGER
The equipment must be mounted in a cabinet.
DANGER
Cabinets, which are not secured to the floor, tip
forwards when the hinged frame is opened. Do not
open the hinged frame without precautions.
Work on the system
Do
cables durin
DANGER
not work on the system or connect or disconnect
g periods of lightning activities.
Alteration
DANGER
Alteration of the equipment is not allowed.
Safety and monitoring facilities
DANGER
Mechanical safety facilities such as cover plates
must not be removed or by-passed.
Troubleshooting November 2005 9-1
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