Omron EJ1 - 07-2008, Operation Manual

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ix
Warnings and Cautions
WARNING
Never use the product without installing protective circuit in network.
Doing so may possibly cause abnormal operation, and result in serious injury,
property damage, or accident. To operate your total system safely even if any
equipment failure occurs, or any trouble is caused by an external element, be
sure to configure an external-control-circuit that consists of emergency stop,
interlock and limit circuits to provide double or triple safeguard.
CAUTION
Do not touch the terminals while power is being supplied.
Doing so may occasionally result in minor injury due to electric
shock.
Use a power supply unit that complies with the reinforced
insulation specified in IEC 60604 for the EJ1. If non-compliant
power supply units are used, electric shock may occasionally
result in minor injury.
Do not allow pieces of metal, wire clippings, or fine metallic chips
generated during installation to enter the product. Doing so may
occasionally result in electric shock, fire, or malfunction.
Do not use the product where subject to flammable or explosive
gas. Otherwise, minor injury from explosion may occasionally
occur.
Never disassemble, modify, or repair the product or touch any of
the internal parts. Minor electric shock, fire, or malfunction may
occasionally occur.
If screws are loosened, fire may occasionally occur. Tighten the
fixing screws for connector with the torque of 0.25 to 0.30 N·m as
specified.
When changing the program by using online edit, an unexpected
actuation may occasionally result in minor or moderate injury or
property damage. Make sure that the product is not affected by
prolonged cycle time on DeviceNet before using online edit.
When transferring a program to another node, or changing I/O
memory, an unexpected actuation may occasionally result in
minor or moderate injury or property damage. Before doing these
operations, make sure that the node to be changed is in
appropriate status.