Omron M1 Series User Manual page 20

Safety Precautions
Although this product is manufactured under strict quality control, install equipment to ensure
safety when used with applications in which serious accidents or property damage can be
anticipated in the event of its failure.
Not doing so may result in accidents.
The Multi-function Compact Inverter (3G3M1 Series) is designed to drive a three-phase in-
duction motor and synchronous motor. Do not use it for single-phase motors or for other pur-
poses.
Doing so may result in fire or accident.
Install the inverter on a non-flammable material such as metallic wall. Also, do not place
flammable object nearby.
Doing so may result in fire.
Be sure to perform wiring after installing the inverter unit. Also, tighten terminals with speci-
fied torque.
Not doing so may result in injury, electric shock or fire.
Ensure that the specifications of the input power of the product match the power supply to
which the product is to be connected.
Not doing so may result in fire or accidents.
Be sure to use the wire of specified size.
Not doing so may result in fire.
When wiring each inverter to the power supply, install a molded-case circuit breaker or earth
leakage circuit breaker (with overcurrent protection function). Use recommended molded-
case circuit breakers or earth leakage circuit breakers that do not exceed the recommended
current capacity.
Not doing so may result in fire.
If no suitable equipment to detect leakage is installed in the upstream power supply line, in
order to avoid the entire power supply system's shutdown due to operation of devices such
as earth leakage circuit breaker as this is undesirable to operation, install an earth leakage
circuit breaker individually to inverters to break the individual inverter power supply lines on-
ly.
Not doing so may result in fire.
When the capacity of the power transformer is 500 kVA or more and 10 times or more than
the rated capacity of the inverter, ensure that a DC reactor is connected.
Not doing so may result in fire.
Never connect the power lines to the inverter output terminals U, V, or W.
Doing so may result in fire.
When connecting a braking resistor, do not connect it to any terminal other than terminals
P(+) and DB.
Doing so may result in fire or accident.
Do not bundle multiple cables as one cable.
Doing so may result in fire.
Do not connect a surge suppressor to the output lines of the inverter.
Doing so may result in fire.
In general, sheaths of the control signal wires do not use reinforced insulation, therefore if a
control signal wire comes into direct contact with a live part of the main circuit, the insulation
of the sheath might break down. In these cases, there is a danger of the control signal wire
being exposed to high voltage from the main circuit, therefore ensure that the control signal
wires will not come into contact with live parts of the main circuit.
Not doing so may result in electric shock or accidents.
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M1 Series Standard Type User's Manual (I669)