Safety Precautions - Omron ZEN Operation Manual

Safety Precautions

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Safety Precautions

!WARNING
!WARNING
!WARNING
!WARNING
!Caution
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Never attempt to disassemble any Units while power is being
supplied. Doing so may result in serious electrical shock or elec-
trocution.
Never touch the I/O terminals, computer connector, Expansion
Unit connector, or Battery Unit connector while power is being
supplied. Doing so may result in serious electrical shock or elec-
trocution.
Provide safety measures in external circuits (i.e., not in the ZEN),
including the following items, to ensure safety in the system if an
abnormality occurs due to malfunction of the ZEN or another
external factor affecting the ZEN operation. Not doing so may
result in serious accidents.
• Emergency stop circuits, interlock circuits, limit circuits, and simi-
lar safety measures must be provided in external control circuits.
• The ZEN will turn OFF all outputs when its self-diagnosis func-
tion detects any error. As a countermeasure for such errors,
external safety measures must be provided to ensure safety in
the system.
• The ZEN outputs may remain ON or OFF due to deposition or
burning of the output relays or destruction of the output transis-
tors. As a countermeasure for such problems, external safety
measures must be provided to ensure safety in the system.
• Provide double safety mechanisms to handle incorrect signals
that can be generated by broken signal lines or momentary
power interruptions.
Do not short the battery terminals or charge, disassemble, heat,
or incinerate the battery. Do not subject the battery to strong
shocks. Doing any of these may result in leakage, rupture, heat
generation, or ignition of the battery. Dispose of any battery that
has been dropped on the floor or otherwise subjected to exces-
sive shock. Batteries that have been subjected to shock may leak
if they are used.
Tighten the AC power supply terminal block screws to the torque
specified in the manual. Loose screws can result in fire or faulty
operation.
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