Mitsubishi Electric MELSEC iQ-R Series User Manual page 231

Error Error name
code
1846H Refresh cycle over
184AH End of primary CFast
card life reached
1855H Current consumption
error (warning)
1856H Current consumption
error (USB port 1 forced
stop)
1857H Current consumption
error (All USB ports
forced stop)
1858H Temperature error
Error details and cause
• The refresh time exceeds the set
refresh cycle.
(1) The refresh cycle value is too short.
(2) The number of set refresh points is
excessive.
• The number of writes to a primary
CFast card reached 5,000 times.
(Number of writes  5,000)
• Alternatively, the number of remaining
spare blocks is 10 or less. (Number of
remaining spare blocks  10)
• The current consumption value of this
product exceeded the allowable value
(4.17 A).
The current consumption value of this
product exceeded the limit (4.35 A),
therefore the USB 3.0 port (P1) is
stopped.
The current consumption value of this
product exceeded the limit (4.35 A),
therefore the USB ports (P1 to P4) are
stopped.
• The temperature of this product is
high.
Corrective action
• Increase the refresh cycle value.
• Decrease the number of set refresh
points.
• Replace the MELSECWinCPU.
• Disconnect the peripheral devices
connected to the USB ports, review
the devices in use (such as self-
powered devices), or change the
configuration so that a self-powered
USB hub is used.
Then, turn OFF the OVERCURRENT
LED by the following procedure:
 Hold the FUNCTION/SHUTDOWN
switch on the FUNCTION position.
 Check that the OVERCURRENT
LED turns OFF.
 Put the FUNCTION/SHUTDOWN
switch back to the center position.
• Disconnect the peripheral devices
connected to the USB ports, review
the devices in use (such as self-
powered devices), or change the
configuration so that a self-powered
USB hub is used.
Then, release the stopped USB port and
turn OFF the OVERCURRENT LED by
the following procedure:
 Hold the FUNCTION/SHUTDOWN
switch on the FUNCTION position.
 Check that the OVERCURRENT
LED turns OFF.
 Put the FUNCTION/SHUTDOWN
switch back to the center position.
• Disconnect the peripheral devices
connected to the USB ports, review
the devices in use (such as self-
powered devices), or change the
configuration so that a self-powered
USB hub is used.
Then, release the stopped USB ports
and turn OFF the OVERCURRENT LED
by the following procedure:
 Hold the FUNCTION/SHUTDOWN
switch on the FUNCTION position.
 Check that the OVERCURRENT
LED turns OFF.
 Put the FUNCTION/SHUTDOWN
switch back to the center position.
• Check the ambient temperature.
• If the same error code is displayed
again, the possible cause is a
hardware failure.
Please contact your local Mitsubishi
Electric sales office or representative.
33.1 Error Codes for Self-diagnostics
Stop/ Diagnostic
continue timing
Continue Always
Continue Always
Continue Always
Continue At interrupt
occurrence
Continue At interrupt
occurrence
Continue Always
33 ERROR CODE LIST
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