Omron NX-SID Series User Manual page 395

No. Item
3 Ambient envi-
ronment
4 Installation and
wiring
5 Safety valida-
tion testing (user
testing)
Tools Required for Inspections
 Required Tools
• Flat-blade screwdriver
• Phillips screwdriver
• Voltage tester or digital voltmeter
• Industrial alcohol and clean cotton cloth
 Tools Required Occasionally
• Oscilloscope
• Thermometer and hygrometer
NX-series Safety Control Unit User's Manual (Z930)
Inspection
Check that the ambient operating
temperature is within the criteria.
Check that the ambient operating
humidity is within the criteria.
Check that the Units are not in
direct sunlight.
Check for accumulation of dirt,
dust, salt, or metal powder.
Check for water, oil, or chemical
sprays hitting the Units.
Check for corrosive or flammable
gases in the area.
Check that the Units are not subject
to direct vibration or shock.
Check for noise sources nearby the
Units.
Check that the DIN Track mounting
hooks on all Units are securely
locked.
Check that cable connectors are
fully inserted and locked.
Check that the screws on the End
Plates (PFP-M) are tight.
Check that each Unit is connected
along the hookup guides, and fully
inserted until it contacts the DIN
Track.
Check for damaged external wiring
cables.
Check to be sure that all safety
functions operate correctly.
10 Maintenance and Inspection
Criteria
0 to 55°C Use a thermometer to check the tem-
perature and ensure that the ambient
temperature remains within the
allowed range of 0 to 55°C.
10% to 95% Use a hygrometer to check the
humidity and ensure that the ambient
With no condensation.
humidity remains between 10% and
95%.
Check that condensation does not
occur due to rapid changes in tem-
perature.
Not in direct sunlight Protect the Units if necessary.
No accumulation Clean and protect the Units if neces-
sary.
No spray Clean and protect the Units if neces-
sary.
No corrosive or flam- Check by smell or use a gas sensor.
mable gases
Vibration resistance Install cushioning or shock absorbing
and shock resistance equipment if necessary.
must be within specifi-
cations.
No significant noise Either separate the Units and noise
sources source or protect the Units.
No looseness Securely lock all DIN Track mounting
hooks.
No looseness Correct any improperly installed con-
nectors.
No looseness Tighten loose screws with a Phillips
screwdriver.
The Units must be con- Connect each NX Unit along the
nected and securely in hookup guides, and insert each NX
place on the DIN Unit until it contacts the DIN Track.
Track.
No visible damage Check visually and replace cables if
necessary.
All functions must Remove the cause of errors and
operate as intended. check the operation of all safety
functions again.
Corrective action
10 - 3
10