PWR-01 141
Appendix ｜ Troubleshooting
Unable to set the output voltage or output current correctly
The output is unstable
Symptom Items to check Remedy
The output voltage can-
not be set correctly.
Are you trying to specify a value that is
higher than the OVP trip point?
You cannot set the output voltage to a value
that is 95 % of the OVP trip point or higher.
Check the OVP trip point.
p.47
Are you trying to specify a voltage that
is lower than the UVL trip point?
You cannot set the output voltage to a value
that is lower than the UVL trip point. Check the
UVL trip point.
p.52
The output current cannot
be set correctly.
Are you trying to specify a value that is
higher than the OCP trip point?
You cannot set the output current to a value
that is 95 % of the OCP trip point or higher.
Check the OCP trip point.
p.47
Symptom Items to check Remedy
When the output is on,
turning the VOLTAGE
knob or CURRENT knob
results in unstable output.
Is the operation mode switching from CV
to CC or CC to CV?
Change the setting (output voltage or output
current) that is limiting the output to a value
greater than the present setting. If the setting is
at maximum, you must use a power supply that
has a larger output voltage or current.
p.45
The output voltage or out-
put current fluctuates.
Are you using master-slave parallel
operation?
Compared to independent operation, the per-
formance degrades slightly during master-
slave parallel operation.
–
Are the sensing cables or sensing short
bar connected?
When you are not using remote sensing, con-
nect the sensing short bar.
p.30
Are both the CV and CC LEDs turned
on?
If the output is oscillating when you are using
remote sensing, insert a capacitor across the
load.
The circuit may be malfunctioning. Immediately
stop using the PWR-01, and have it repaired.
p.30
Do the sensing cables or load cables
have poor contact, or are the cables bro-
ken?
Turn the POWER switch off, and check the wir-
ing.
p.14
Does the load current have peaks, or is it
pulse shaped?
The peak values may be exceeding the set
constant current. Increase the set constant cur-
rent or increase the current capacity.
p.45
The output voltage is off-
set from the voltage that
the PWR-01 was generat-
ing when it was turned on.
Has 30 minutes passed since the power
was turned on?
Warm up the PWR-01 for at least 30 minutes. –
The output voltage does
not decrease even when
the output is turned off.
If the bleeder circuit (CF01) set to off? If the bleeder circuit is set to off (CF01: DIS),
the voltage when the output is on remains. Set
the bleeder circuit to on (CF01: NORM/ HYP).
p.58
The output voltage is off-
set from the voltage set-
ting.
Is the internal resistance setting (CF03)
set to a value other than off?
Set the internal resistance to off (CF03: OFF). p.59
p.78
To Next Page
Loading...
