SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

Chapter 5 Error Codes
Name
Option 2
error
Description
The inverter detects errors in the option
board mounted in the optional slot 2.
For details, refer to the instruction
manual for the mounted option board.
If the input voltage falls, the inverter will
shut off its output, display the code
shown on the right, and wait for the
recovery of the input voltage.
Waiting in The inverter will display the same error
undervoltage code also during an instantaneous
status power failure.
(remark) Inverter trips with under
voltage when this status continues for
40 seconds.
Communication
error
Waiting for
retry
Power-off
Restricted
operation
command
Empty trip
history
If a problem occurs in the
communication between the digital
operator and inverter, the inverter will
display the code shown on the right.
When the retry after instantaneous
power failure or tripping has been
enabled, the inverter displays the code
shown on the right while awaiting retry
after an instantaneous power failure or
tripping.
The inverter displays the code shown
on the right when the inverter power is
turned off.
When an operation direction has been
restricted by the setting of "b035", the
inverter will display the error code
shown on the right if the operation
command specifying the restricted
operation direction is input.
If the inverter has not tripped before,the
inverter displays .
Display on
digital operator
to
Display on remote
operator
OP2-0
OP2-9
UV.WAIT
R-ERROR COMM
R-ERROR COMM
RESTART
ADJUST
POWER OFF
RUN.CMD DISABLE
Ex. Err2
Err2
Reference
Troubleshooting and corrective action
page
Check whether the option board is
Refer to the
mounted correctly.
instruction
(Check the board mounting.)
manual for
Check whether the option board is used
the SJ-FB,
correctly.
SJ-DG, or
(Check the instruction manual for the
SJ-DN.
option board.)
Check whether the power supply voltage
has fallen.
(Recover the power supply.)
Check the MCB and magnetic contactors
for poor contacts.
(Replace the MCB and magnetic -
contactors.)
Check whether the voltage across the P
and N terminals is normal.
(Check the voltage across the P and N
terminals.)
Check whether the relay plug is fitted
correctly.
(Check the relay plug for connection.)
-
Check whether the digital operator is
connected correctly.
(Check the digital operator for connection.)
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-
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