142 PWR-01
Appendix ｜ Troubleshooting
The output ripple is large
The ALM LED lights when the OUTPUT key is turned on.
Unable to perform remote control
Symptom Items to check Remedy
The ripple sometimes
becomes large.
Is the input voltage outside the range? Apply a voltage that is within the input voltage
range.
p.119
p.122
p.125
The ripple increased when
the PWR-01 was installed
in a different location.
Is something nearby generating a strong
magnetic or electrical field?
Take measures such as moving the PWR-01
away from the field sources or twisting the
cables connected to the PWR-01.
–
The output ripple is large
during external control.
Is there a large amount of external volt-
age noise?
Take measures against noise. –
The ripple increased when
the load cable was
changed.
Are the sensing cables connected? When you are not using remote sensing, con-
nect the sensing short bar.
p.30
Symptom Items to check Remedy
The ALM LED lights when
the OUTPUT key is turned
on.
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 the polarities of the sensing cables
connected in reverse?
The polarities of the sensing cables may be
connected in reverse, or the ends of the cables
may be shorted. Check them.
p.30
Are you using remote sensing with long
load cables?
Keep the voltage drop in the load cables within
the compensation voltage range.
p.30
Are you using external control with a
loose control cable?
Connect the cable correctly. p.85
Is the external voltage excessive during
external control?
Apply the correct voltage. p.90
p.92
Is the internal temperature too high? The overheat protection function has been acti-
vated. Check the operating environment.
p.50
p.128
The louver may be clogged, or the fan may be
broken. Check these items.
p.116
The ALM LED lights when
the load is changed.
Is a large external voltage—such as that
of a battery load—being applied?
The overvoltage protection function or the over-
current protection function may have been acti-
vated. Check them.
The PWR-01 may be overloaded. Check the
load.
p.47
p.18
Is the actual output voltage higher than
the set voltage that is displayed on the
panel?
Is a special load connected?
Symptom Items to check Remedy
Remote control through
the communication inter-
face cannot be performed.
Is the communication interface you want
to use turned on in CONFIG settings?
Select the remote control communication inter-
face (CF40/ CF41/ CF42).
p.63
When the LAN interface is
in use, the IP address
cannot be obtained from
the DHCP server.
Is the LAN LED lit in orange or red? If it is lit in orange, the PWR-01 is waiting for a
response from the DHCP server.
If it turns red afterward, the PWR-01 may have
timed out.
Consult your network administrator.
p.66
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