YASKAWA Varispeed G7 Series Instruction Manual page 6

• Reset alarms only after confirming that the RUN signal is OFF.
Injury may occur.
• Don't touch the radiation fins (heatsink), braking resistor, or Braking Resistor Unit. These can
become very hot.
Otherwise, a burn injury may occur.
• Be sure that the motor and machine is within the applicable ranges before starting operation.
Otherwise, an injury may occur.
• Provide a separate holding brake if necessary.
Always construct the external sequence to confirm that the holding brake is activated in the event
of an emergency, a power failure, or an abnormality in the Inverter.
Failure to observe this caution can result in injury.
• If using an Inverter with an elevator, take safety measures on the elevator to prevent the elevator
from dropping.
Failure to observe this caution can result in injury.
• Don't check signals while the Inverter is running.
Otherwise, the equipment may be damaged.
• Be careful when changing Inverter settings. The Inverter is factory set to suitable settings. For the
Inverters in the 400 V class of 55 kW or more, however, select the correct power supply voltage
jumper according to the input voltage.
Otherwise, the equipment may be damaged.

Maintenance and Inspection
• Do not touch the Inverter terminals. Some of the terminals carry high voltages and are extremely
dangerous.
Doing so can result in electric shock.
• Always have the protective cover in place when power is being supplied to the Inverter. When
removing the cover, always turn OFF the power supply to the Inverter through an ELCB or MCCB.
Doing so can result in electric shock.
• Turn OFF the main circuit power supply and wait for at least 5 minutes. Wait until the CHARGE
indicator light goes out before performing maintenance or inspections.
The capacitor will remain charged and is dangerous.
• Maintenance, inspection, and replacement of parts must be performed only by authorized person-
nel.
Remove all metal objects, such as watches and rings, before starting work. Always use grounded tools.
Failure to heed these warning can result in electric shock.
• For 400-V class Inverters of 55 kW to 300 kW with SPEC: E and later, take safety measures such
as the installation of an emergency-stop switch before adjusting constants.
Failure to do so may result in injury caused by the motor accidentally rotating during stationary autotuning performed by
the Inverter when the constants are adjusted.
• Provide a separate holding brake if necessary.
Always make any adjustments other than those involving the operation of the Inverter with the holding brake released.
Failure to observe this caution may result in injury.
• If using an Inverter with an elevator, take safety measures on the elevator to prevent the elevator
from dropping.
Failure to observe this caution can result in injury.
WARNING
CAUTION
WARNING
v