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Power Supply Units Section 3-4
Note Under normal application conditions, the replacement notification function will
operate after several years or even tens of years. When using a Power Supply
Unit for an extended period of time, periodically check operation with the
TEST switch as described above and be sure the alarm output functions prop-
erly.
Self-diagnostic Function
Note If the error continues for 3 hours or longer, the replacement notification func-
tion will be disabled. Even if the cause of the overheating is removed, the dis-
play will continue as “Hot,” and the notification output will remain OFF. In this
state, the internal parts may deteriorate even if the PC operation is normal, so
replace the Power Supply Unit.
Comparison between the CJ1W-PA205C and CJ1W-PA205R
Error name Display Alarm output
status
Error details (cause) Recovery method
Unit overheated
error
OFF Internal overheating has
occurred in the Power Supply
Unit as a result of usage under
conditions that exceed the spec-
ified values, insufficient ventila-
tion, or incorrect installation.
(See note.)
Remove the cause of the over-
heating error.
Unit error OFF System error from external
noise or hardware malfunction.
Turn ON the input's power sup-
ply again. If the Unit does not
recover, the error may be
caused by a Unit malfunction.
Consult with your OMRON rep-
resentative.
Item CJ1W-PA205C CJ1W-PA205R (for comparison)
RUN contact output Not supported Supported
Terminal block
arrangement
ON
0.5 s 0.5 s 0.5 s 0.5 s 0.5 s 0.5 s
ON OFF ON
TEST switch
Alarm output
3 s
NC
NC
100 to 240 VAC
INPUT
L2/N
L1
AC input
LG
Unconnected
terminals
GR
CJ1W-PA205C
24 VDC
2A RESISTIVE
240 VAC
OUTPUT
RUN
INPUT
100 to 240 VAC
L2/N
L1
AC input
LG
RUN output
(RUN contact)
GR
CJ1W-PA205R
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