Inspections And Cleaning; Inspection Points - Omron NSJ CONTROLLERS - 03-2008 Operation Manual

Inspections and Cleaning

Note

11-2 Inspections and Cleaning

11-2-1 Inspection Points

No. Item
1 Source Power Check for voltage fluctuations
Supply at the power supply terminals.
2 I/O Power Sup- Check for voltage fluctuations
ply (for CJ-series at the I/O terminals.
Expansion
Racks)
3 Ambient environ- Check the ambient tempera-
ment ture (inside the control panel).
Check the ambient humidity
(inside the control panel).
Check that the NSJ Controller
is not in direct sunlight.
Check for accumulation of
dirt, dust, salt, metal filings,
etc.
Check for water, oil, or chemi-
cal sprays hitting the NSJ
Controller.
Check for corrosive or flam-
mable gases in the area of the
NSJ Controller.
Check the level of vibration or
shock.
Check for noise sources near
the NSJ Controller.
200
The communications ports are related to these operation because when a
simple backup operation is performed for the NSJ Controller to execute a
write or verification operation for a Memory Card, the NSJ Controller will auto-
matically use an available communications port number.
Daily or periodic inspections and cleaning are required in order to maintain
the NSJ Controller in peak operating condition.
Although the major components in NSJ Controller have an extremely long life
time, they can deteriorate under improper environmental conditions. Periodic
inspections are thus required to ensure that the required conditions are being
kept.
Inspection is recommended at least once every six months to a year, but more
frequent inspections will be necessary in adverse environments.
Take immediate steps to correct the situation if any of the conditions in the fol-
lowing table are not met.
Inspection
The voltage must be within
the allowable voltage fluctu-
ation range.
(See note.)
Voltages must be within
specifications for each Unit.
0 to 50°C
Refer to 3-1-1 General
Specifications.
Relative humidity must be
35% to 85% with no con-
densation.
Refer to 3-1-1 General
Specifications.
Not in direct sunlight
No accumulation
No spray on the NSJ Con-
troller
No corrosive or flammable
gases
Vibration and shock must
be within specifications.
No significant noise
sources
Criteria
Use a voltage tester to check the
power supply at the terminals. Take
necessary steps to bring voltage
fluctuations within limits.
Use a voltage tester to check the
power supply at the terminals. Take
necessary steps to bring voltage
fluctuations within limits.
Use a thermometer to check the
temperature and ensure that the
ambient temperature remains
within the allowed range of 0 to
50°C.
Use a hygrometer to check the
humidity and ensure that the ambi-
ent humidity remains within the
allowed range.
Check for the possibility of conden-
sation occurring due to rapid
changes in temperature.
Protect the NSJ Controller if neces-
sary.
Clean and protect the NSJ Control-
ler if necessary.
Clean and protect the NSJ Control-
ler if necessary.
Check by smell or use a sensor.
Install cushioning or shock absorb-
ing equipment if necessary.
Either separate the NSJ Controller
and noise source or protect the
NSJ Controller.
Section 11-2
Action