Ametek EC1000S, Руководство пользователя, Страница: 264 / 291

User Manual EC1000S
California Instruments 260
Something is blocking the air
flow near the air intake on the
front panel or the air exhaust
on the rear panel.
Make sure the EC1000S complies with the
installation requirements described in
“2.2
Installation Environment
”
.
Table 7-14. When Fault Is Suspected (Problem Related to Measurement Functions)
Symptom Possible Cause Required Action, etc.
Measured value for
voltage or current is
not displayed
correctly.
Selected display items are
not appropriate. For AC, select RMS. Displayed values will
not be correct unless RMS is selected.
“----” is displayed.
Measurement is out of range.
(Out of measurable range)
“----” is displayed when any of the
measurement ranges set as described in
“5.4
MEASURE Screen
”
have been
exceeded. Check the load conditions and
set values.
Measured values
are inconsistent.
Measurements are being
taken in external mode
(EXT).
When in external mode (EXT), the
measurement cycle is fixed.
If the external input signal frequency is
known, change the output mode to ADD
mode (AC-ADD or AC+DC-ADD), set the
internal oscillator output voltage to “0”, and
set the frequency as the external input
frequency.
Measurements are at low
frequency (10 Hz or less).
When the frequency is lower than 10 Hz, the
measurement cycle is fixed, so the
measured values may become unstable.
Table 7-15. When Fault Is Suspected (Problem Related to Sequence Function)
Symptom Possible Cause Required Action, etc.
Sequence control
does not work.
Output is off. Set output to on.
When a sequence is
completed, the
setting differs from
the final step.
When completed, the voltage
or frequency is outside the
setting range limit.
Setting range limit was not checked when
programming the sequence.
When the final step value is outside the
setting range limit, it is forcibly changed to
the lower limit value.