7.3
When Fault Is Suspected
APS-1102 Programmable AC/DC Power Source
7-18
Table 7-17. When Fault Is Suspected (Problem Related to Limiter Setting Range Limit)
Symptom
Possible Cause
Required Action, etc.
Output peak current
limiter set value
exceeds the output
peak current limiter
setting.
Overshoot current value is being
measured.
The output peak current limiter may overshoot,
depending on the load.
See “3.4.7 Using limiter functions”
.
Table 7-18. When Fault Is Suspected (Other Problems)
Symptom
Possible Cause
Required Action, etc.
Transformer is used as
the load, but current is
abnormal, causing
saturation.
When the APS-1102 output is
set to AC mode, the electronic
circuitry performs control so
that abnormal DC voltage is not
generated, but due to control
limitation, the voltage cannot be
reduced all the way to 0 V.
Depending on the connected
transformer, a slight DC voltage
may be emitted, which applies
DC excitation to the core, and
abnormalities may occur in the
transformer excitation current.
Set AC (AC) mode.
When in AC-INT mode, the APS-1102 DC
offset voltage is ±50 mV or less (100 V range).
or ±100 mV or less (200 V range). When using
this device with a connected transformer,
consider the effects of these values.
Output overvoltage
occurs when inductive
load (transformer, etc.)
is used.
Back emf was included by the
operation of the peak current
limiter.
Lower the peak current limiter settings (positive
and negative).
