Replacing Nodes - Omron WD30-ME Operation Manual

Maintenance
Equipment that could be
needed
Inspection item
Item
Inspection contents
Environmental Ambient and in-panel temperature
conditions
Ambient and in-panel humidity
Dust/dirt accumulation
Installation Are the units installed securely?
Are the communications cables securely con-
nected?
In the antenna tight?
The following table shows the operating ambient temperature and humidity ranges for each unit

10-3-3 Replacing nodes

Precautions
!Caution To prevent electric shock when replacing a unit, be sure to turn OFF the
• Alcohol and all-cotton cloth
• Synchroscope
• Oscilloscope (pen-writing type)
• Thermometer, hygrometer
Check the items in the following table to make sure they meet the standard.
If they do not, improve the surrounding environment so they meet the stan-
dard or adjust this unit.
Unit Acceptable
− 10 to 50 ºC
DeviceNet wireless
master station
− 10 to 50 ºC
DeviceNet wireless
slave station
Each node (master, slave, wireless master station, wireless slave station)
makes up the network. The entire network is affected when a node is faulty, so
a faulty node must be repaired or replaced quickly. We recommend having
spare parts available to restore network operation as quickly as possible.
Observe the following precautions when replacing a faulty unit.
• After replacement make sure 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 listed at the end of
this manual.
• If there is a faulty contact, try wiping the contact with a clean, lint-free
cloth dampened with alcohol.
power supplies to all of the nodes (master and slaves) before removing the
faulty unit.
Standard Inspection method
See below. Thermometer
See below. Thermometer
None Visual
No looseness
No looseness
No looseness
Acceptable humidity
25%to 85%
(with no condensa-
tion or icing)
25%to 85%
(with no condensa-
tion or icing)
Section 10-3
153