Hitachi SJ Series, User Manual

Page: 631 / 786

18-38
Chapter 18
Tips/FAQ/Troubleshooting
Operation command is
limited.
Please check operation
command.
• Operation command of command direction
is limited by the setting of [AA114] operation
direction limit.
• The rotation direction is reversed from the
command direction limited according to the
setting of [AA114] operation direction limit
because the frequency command is turned
negative due to calculation of main speed or
auxiliary speed.
• Check the setting of [AA114]
operation direction limit.
• Check the terminal command FW/RW
and the command direction of
communication command.
• Check whether the calculated
frequency command is negative or
not.
Message

Estimated cause(s)

Exemplar measures to be taken
Resetting.
Inverter is being reset.
Press the XX key.
• [RS] terminal is ON.
• Trip reset was performed. (The screen is
transited automatically at trip reset.)
• The inverter is in the condition that
[RS] terminal is ON. Re-examine the
state of input terminal.
Retrying.
Retrying and restarting.
Press the XX key.
• The inverter is waiting for restart.
(This mode is released after the set wait time
has elapsed.)
• The inverter may not start if the incoming
voltage is low.
• If the wait time for restart is long, the
message will continue to be indicated.
See "12.14 Changing the Start Mode".
• If the incoming voltage is low, check
the input voltage.
Main circuit under
instantaneous power
failure.
Power of main circuit is
turned OFF.
Press the XX key.
• The main circuit power supply (R, S, T) is
turned OFF due to lightning strikes, power
supply environment, or other factors.
• Check the state of input power supply.
• The inverter will recover when the
power supply returns.
Main circuit under
insufficient voltage.
Please check the main
circuit power.
Press the XX key.
• The control circuit power supply (R0, T0) has
been input, whereas the main circuit power
supply (R, S, T) has been cut.
• Check the state of input power supply.
• The inverter will recover when the
power supply of main circuit returns.
POWER OFF
POWER OFF
Press the XX key.
• The power supply to the inverter is turned
OFF.
• Check the state of input power supply.
• The inverter will recover when the
power supply returns.
Control power under
insufficient voltage.
Please check the control
power supply.
Press the XX key.
• The control circuit power supply (R0, T0) is
turned OFF.
• Check the state of input power supply.
• The inverter will recover when the
power supply of control circuit returns.