Omron 3G3MX2 User Manual page 393

Condition
Operation/setting
cannot be
performed via
Modbus
communication
(Modbus-RTU).
The earth leakage
breaker trips when
the Inverter is
operated.
DC injection
braking does not
work.
An Undervoltage
Trip (E09) occurs.
Noise enters in the
TV or radio located
near the Inverter.
An optional board
error (E60 to E68)
occurred.
An optional board
error (E69)
occurred.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
Possible cause
Changes to If the setting of Communication Speed
communication Selection (C071), Communication Parity
parameters are not Selection (C074) or Communication Stop
reflected. Bit Selection (C075) was changed,
reconnect the power or perform a reset (by
turning the RS terminal ON and then OFF).
The setting of RUN Set RUN Command Selection (A002/
Command Selection A202) to "03: Modbus communication
(A002/A202) is not correct. (Modbus-RTU)".
The setting of Frequency Set Frequency Reference Selection (A001/
Reference Selection A201) to "03: Modbus communication
(A001/A201) is not correct. (Modbus-RTU)".
The communication Set the correct communication speed in
speed is not set correctly. Communication Speed Selection (C071).
The station number is not Set the correct station number in
set correctly or duplicated. Communication Station No. Selection
(C072).
The communication parity Set the correct communication parity in
is not set correctly. Communication Parity Selection (C074).
The communication stop Set the correct stop bit in Communication
bit is not set correctly. Stop Bit Selection (C075).
The wiring is incorrect. Correctly wire the RS+ and RS− terminals
on the control circuit terminal block.
The Inverter leak current Decrease the Carrier Frequency (b083).
is large.
Increase the sensitivity current of the earth
leakage breaker. Or, replace the earth
leakage breaker with one of higher
sensitivity current.
The DC injection braking Set DC Injection Braking Power (A054).
power is not set.
The DC injection braking Set DC Injection Braking Time (A055).
time is not set.
The voltage drops due to Increase the power supply capacity.
insufficient power supply
capacity.
Irradiated noise from the Extend as much as possible the wiring
Inverter. distance from the TV or radio to the
Inverter.
The optional board Refer to the manual for the optional board.
detected and error and
notified the Inverter.
Inverter failure: The If the problem cannot be fixed in the
optional board connector optional board, the Inverter may have
is not operating properly. failed. The mating of the option connector
may be bad. Check of dirty contacts and
other possible causes. If the problem
cannot be solved, replace the Inverter.
Communications became Check for bad option connector mating,
impossible after detecting dirty terminal contacts, etc. Check to see if
the option. The optional the terminal block cover on the Inverter and
board is partly the cover on the optional board are mated
disconnected. properly and the screws are properly
tightened.
7-2 Troubleshooting
Remedial actions
Reference
Page
6-3
5-22
5-15
6-3
6-3
6-3
6-3
6-2
5-51
2-17
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5-135
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