Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 488

Maintenance
Inspection Equipment
Equipment Required for
Regular Inspection
Other Equipment that May
Be Required
Inspection Procedure
Inspection item
Environmental condi- Are ambient and cabinet tem-
tions peratures correct?
Are ambient and cabinet
humidity correct?
Has dust or dirt accumulated? No dust or dirt
Installation condi- Are the Units installed
tions securely?
Are the connectors of the
communications cables fully
inserted?
Are the external wiring screws
tight?
Are the connecting cables
undamaged?
9-3-3 Replacing Units
Precautions
Settings after
Replacing Units
Prepare the following equipment before inspecting the system.
A flat-blade and a Phillips screwdriver, a screwdriver for connecting communi-
cations connectors, a tester (or a digital voltmeter), industrial alcohol, and a
clean cloth are required for routine inspection.
A synchroscope, oscilloscope, thermometer, or hygrometer may be required.
Check the items in the following table and correct any condition that is below
standard.
Details
Refer to the specifications for
each Slave.
Refer to the specifications for
each Slave.
No looseness
No looseness
No looseness
No external damage
The Network consists of the DeviceNet Master Unit and Slave Units. The
entire network is affected when a Unit is faulty, so a faulty Unit must be
repaired or replaced quickly. We recommend having spare Units available to
restore Net-work operation as quickly as possible.
Observe the following precautions when replacing a faulty Unit.
After replacement make sure that there are no errors with the new Unit.
When a Unit is being returned for repair, attach a sheet of paper detailing the
problem and return the Unit to your OMRON dealer.
If there is a faulty contact, try wiping the contact with a clean, lint-free cloth
dampened with alcohol.
After replacing a Unit, set the new Unit's switches to the same settings that
were on the old Unit.
Standard
Thermometer
Hygrometer
Visual inspection
Phillips screwdriver
Phillips screwdriver
Phillips screwdriver
Visual inspection
Section 9-3
Equipment
467