Hitachi X200 Series instruction manual Viii

viii

Warnings for Configuring Drive Parameters

WARNING: When parameter B012, level of electronic thermal setting, is set to … 3-34 motor FLA rating (Full Load Ampere nameplate rating), the inverter provides solid

state motor overload protection at 115% of motor FLA or equivalent. If parameter B012 exceeds the motor FLA rating, the motor may overheat and damaged. Parameter B012, level of electronic thermal setting, is a variable parameter.

Cautions for Configuring Drive Parameters

CAUTION: Be careful to avoid specifying a braking time that is long enough to	… 3-19
cause motor overheating. If you use DC braking, we recommend using a motor with
a built-in thermistor, and wiring it to the inverter’s thermistor input (see
“Thermistor Thermal Protection” on page 4-24). Also refer to the motor
manufacturer’s specifications for duty-cycle recommendations during DC braking.
HIGH VOLTAGE: When set RDY function ON, there will be a voltage appear at	… 3-47
motor output terminals U, V and W even if the motor is in stop mode. So never
touch the inverter power terminal even the motor is not running.
CAUTION: Do not change Debug mode for safety reasons. Otherwise unexpected	… 3-62
performances may occur.

Warnings for Operations and Monitoring

WARNING: Be sure to turn ON the input power supply only after closing the front	… 4-3
case. While the inverter is energized, be sure not to open the front case. Otherwise,
there is the danger of electric shock.
WARNING: Be sure not to operate electrical equipment with wet hands. Otherwise,	… 4-3
there is the danger of electric shock.
WARNING: While the inverter is energized, be sure not to touch the inverter	… 4-3
terminals even when the motor is stopped. Otherwise, there is the danger of electric
shock.
WARNING: If the retry mode is selected, the motor may suddenly restart after a	… 4-3
trip stop. Be sure to stop the inverter before approaching the machine (be sure to
design the machine so that safety for personnel is secure even if it restarts.)
Otherwise, it may cause injury to personnel.
WARNING: If the power supply is cut OFF for a short period of time, the inverter	… 4-3
may restart operating after the power supply recovers if the Run command is
active. If a restart may pose danger to personnel, so be sure to use a lock-out circuit
so that it will not restart after power recovery. Otherwise, it may cause injury to
personnel.
WARNING: The Stop Key is effective only when the stop function is enabled. Be	… 4-3
sure to enable the Stop Key separately from the emergency stop. Otherwise, it may
cause injury to personnel.
WARNING: During a trip event, if the alarm reset is applied and the Run command	… 4-3
is present, the inverter will automatically restart. Be sure to apply the alarm reset
only after verifying the Run command is OFF. Otherwise, it may cause injury to
personnel.