7.3
When Fault Is Suspected
APS-1102 Programmable AC/DC Power Source
7-17
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.
Table 7-16. When Fault Is Suspected (Problem Related to Memory Function)
Symptom
Possible Cause
Required Action, etc.
Memory recall does
not work.
Output on/off switch
(OUTPUT) is set to on.
When output is on, recall cannot operate.
Set the output on/off switch to OFF.
