Hitachi WL200 Series

Chapter 9 Errors and Remedies
54
9.1 Status indicator explanations and error handling
The 4 types of indicator lighting statuses are explained in the following table.
Abbreviation
Name and status
On
ON
Off
OFF
Blinking
Blinking ON (200 ms) and OFF (200 ms)
-
Undefined
LINK /
ACT 1
LINK /
ACT 2
COMM
ERR
Description
Remarks
-
-
On
Off
Communicati
ng by the set
telegram
WJ-PN is communicating with PROFINET IO
controller by the set telegram.
Off
Off
Off
Off
Power supply
error
Power is not being supplied correctly to the
Communication Unit.
・ Check that power is being supplied
correctly to the inverter (for example,
check whether the wiring of the inverter
main power supply is correct, if the power
supply voltage has dropped, and the
inverter is operating normally).
・ Check that the WJ-PN is mounted
correctly onto the inverter.
・ Eliminate the cause of the error, and then
turn the WJ200 / WL200 power supply off
and on again.
On
-
Off
-
PROFINET IO
controller not
available
WJ-PN isn’t connected to the PROFINET IO
controller unit yet.
・ Check that the PROFINET IO controller
unit is operating correctly.
・ Check that the communications cable is
connected correctly to the connector or
wired correctly.
-
-
Blinking
Off
Parameter is
being set
WJ-PN is being set parameter to from
PROFINET IO controller.
-
-
Blinking
-
Flash LED
When you operate Flash LED with an
engineering tool, COMM LED is blinking for 3
seconds with a frequency of 1Hz (500ms ON
and 500ms OFF).
-
-
Off
Blinking
Error
WJ-PN detects disconnection of PROFINET.
・ Check the power of PROFINET IO
controller
・ Check the cable connecting.
・ Check the power of devices in the path.
-
-
-
On
Hardware
failure
WJ-PN detects hardware failure. Please
replace the WJ-PN.