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Caution
138
Inspection and Cleaning
Section 6-3
S
Points inspected
Inspect the following points to determine if there is any divergence from the
stated criteria. If there is, either improve the surrounding environment so that
the values fall within the stated range, or adjust the NT11S.
Point Inspected
Inspection Details
Criterion
Inspection Instrument
Power supply voltage
Fluctuation in power supply ter-
minal voltage
Permissible voltage fluctuation
range
(24 VDC --15% +10%)
Tester
Ambient environmental
conditions
Ambient temperature (tempera-
ture in the operation panel)
0 to 50
_
C
Thermometer
conditions
Ambient humidity
(humidity in the operation pan-
el)
35% to 85%RH
Hygrometer
Presence/absence of dust
Dust must not be settled
Visual inspection
Mounting conditions
Looseness of mounting brack-
ets etc.
To be no looseness
Accessory tools
Connector connections of con-
necting cable
To be fully inserted and locked,
with no looseness
Looseness of screws in exter-
nal wiring
To be no looseness
Philips screwdriver
Conditions of external connect-
ing cables
Faults such as incipient discon-
nections.
Visual inspection
Components with limited
lives
Brightness of the backlight
Must be sufficiently bright.
Backlight life: 50,000 hours
Visual inspection
Cautions on replacing the NT11S
When replacing the NT11S after discovering a fault during inspections, note the
following points:
S
Be sure to switch the power OFF before replacement.
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After replacement, check that the new NT11S is not subject to the same error.
S
If a faulty unit is returned for repairs, write as detailed a description of the fault as
possible and send this description together with the unit to the OMRON address
indicated on the back cover of this book.
The disposal of the unit may be regulated by nationl or local authorities. Dispose
of them in accordance with the laws and regulations of the relevant country and
local authority.
Summary of Contents for NT11S
Page 1: ...Cat No V029 E1 2 NT11S Programmable Terminal OPERATION MANUAL ...
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Page 5: ...iii NT series Programmable Terminal Operation Manual Produced June 1997 ...
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