Precautions To Run And Test Running - Hitachi SH1 Series Basic Manual

Chapter 1
● You run the risk of injury or fire!
Injury
Fire
• Do not connect AC power supply to any of the
output terminals (U, V, and W).
Prohibited
• Make sure that the voltage of AC power supply
matches the rated voltage of your inverter.
Practice
● You run the risk of electric shock
and injury!
• Before operating slide switch SW in the
Electric
shock inverter, be sure to turn off the power supply.
• Since the inverter supports two modes of
Injury
cooling-fan operation, the inverter power is
not always off, even when the cooling fan is
stopped. Therefore, be sure to confirm that
the power supply is off and wait for 10
minutes(*1) or 15 minutes(*2)before wiring.
Practice
(*1)SH1-00041-H～SH1-00620-H (SH1-007H～SH1-220H)
(*2)SH1-00770-H～SH1-06600-H (SH1-300H～SH1-3150H)

1.3.4 Precautions to Run and Test Running

● You run the risk of electric shock or
fire!
Electric
• While power is supplied to the inverter, do not
shock
touch any internal part or terminal of the
Fire
inverter. Also do not check signals, or connect
or disconnect any wire or connector.
• While power is supplied to the inverter, do not
touch any internal part of the inverter. Also do
Prohibited
not insert a material such as a rod and etc.
● You run the risk of electric shock!
• Be sure to close the terminal block cover
Electric
before turning on the inverter power. Do not
shock
open the terminal block cover while power is
being supplied to the inverter or voltage
remains inside.
• Do not operate switches with wet hands.
Prohibited
● You run the risk of injury or fire!
• While power is supplied to the inverter, do not
Injury
touch the terminal of the inverter, even if it
Fire
has stopped.
Prohibited
WARNING
● You run the risk of fire!
Fire
• Do not use a single-phase input.
• Do not connect a resistor directly to any of the
DC terminals (PD, P, and N).
• Do not use the magnetic contactor installed on
the primary and secondary sides of the inverter
to stop its operation.
Prohibited
• Tighten each screw to the specified torque.
• No screws must be left loose.
• Connect an earth-leakage breaker to the power
input circuit.
Practice
• Use only the power cables, earth-leakage
breaker, and magnetic contactors that have the
specified capacity (ratings).
DANGER
● You run the risk of injury and damage to
Injury
• Do not select the retry mode for controlling an
Damage
elevating or traveling device because free-running
status occurs in retry mode.
Prohibited
● You run the risk of injury!
• If the retry mode has been selected, the inverter
will restart suddenly after a break in the tripping
Injury
status. Stay away from the machine controlled by
the inverter when the inverter is under such
circumstances. (Design the machine so that human
safety can be ensured, even when the inverter
restarts suddenly.)
• The [STOP] key on the operator keypad is effective
only when its function is enabled by setting.
Prohibited
Prepare an emergency stop switch separately.
• If an operation command has been input to the
inverter before a short-term power failure, the
inverter may restart operation after the power
Practice
recovery. If such a restart may put persons in
danger, design a control circuit that disables the
inverter rom restarting after power recovery.
• If an operation command has been input to the
inverter before the inverter enters alarm status,
the inverter will restart suddenly when the alarm
status is reset. Before resetting the alarm status,
make sure that no operation command has been
input.
1-3
Safety Instructions
machine.