Yokogawa Value Series FX1000 - Manual (Page 243)

10-18
IM 04L21B01-01EN
Does the input meet
the specifications?
NO
NO
NO
NO
NO
YES
YES
YES
YES
• Large measurement errors
• Trend or digital wave value fluctuation
• Trend going off the scale beyond either 0% or 100%
YES
• Adjust the span and range
settings (section 3.3).
• If you use input calibration
(/CC1 option), check the set values
for correction points (section 3.9).
Change the input wiring to meet
the specifications.
Is the input wiring correct?
• Attach the input terminal cover
correctly.
• Protect the input terminal from fans
and other sources of wind.
• Keep the temperature fluctuation
near the input terminal to a
minimum.
Are the range/span
settings appropriate?
Are you taking
measures against noise?
Are
you keeping
the environmental temperature
constant (TC
input)?
• Separate the input wiring from the
noise source.
• Ground the recorder.
• Ground the measured object.
• Insulate the TC from the measured
object.
• Use shielded cables for input.
• Change the integration time
of the input A/D converter
(section 3.1).
• Use the moving average of the
input (section 3.4).
• Wire correctly
• Install the terminal block correctly.
• Fasten the terminal screws
correctly.
• Insulate the RTD from the ground.
• If burnt, replace the TC.
Is the input wiring parallel
with other equipment?
NO
NO
YES
YES
Is the RJC setting
correct (TC input)?
• Stop the TC burnout upscale/
downscale function of other
equipment.
• Ground the FX and other
equipment at one point.
• Disconnect parallel wiring
(for example, use a
double-element TC)
Configure correctly.
Contact your nearest YOKOGAWA
dealer to have your FX serviced.
Section 3.2
Section 13.1
10.2 Troubleshooting