Hitachi WJ200-001S Instruction Manual page 11

viii
Warnings for Configuring Drive Parameters
WARNING: When parameter b012, level of electronic thermal setting, is set to WARNING
WARNING WARNING
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 CAUTION CAUTION CAUTION
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 HIGH VOLTAGE: When set RDY function ON, there will be a voltage appear at HIGH VOLTAGE HIGH VOLTAGE
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: CAUTION: Do not change Debug mode for safety reasons. Otherwise unexpected CAUTION: CAUTION:
performances may occur.
Warnings for Operations and Monitoring
WARNING WARNING: Be sure to turn ON the input power supply only after closing the front WARNING WARNING
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. WARNING
WARNING WARNING
Otherwise, there is the danger of electric shock.
WARNING WARNING: While the inverter is energized, be sure not to touch the inverter WARNING WARNING
terminals even when the motor is stopped. Otherwise, there is the danger of
electric shock.
WARNING WARNING: If the retry mode is selected, the motor may suddenly restart after a WARNING WARNING
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 WARNING
WARNING WARNING
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 WARNING
WARNING WARNING
sure to enable the Stop Key separately from the emergency stop. Otherwise, it may
cause injury to personnel.
WARNING WARNING: During a trip event, if the alarm reset is applied and the Run WARNING WARNING
command 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.
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