Safety Precautions - Omron NQ HMI Getting Started Manual

Safety precautions

1-3 Safety precautions
!WARNING
!WARNING
!WARNING
!WARNING
!WARNING
!WARNING
!WARNING
!Caution
!Caution
!Caution
Do not attempt to take any HMI apart or touch any internal parts while the
power is being supplied. Doing so may result in electric shock.
Do not attempt to disassemble, repair, or modify any HMI. Any attempt to do so may
result in malfunction, fire, or electric shock.
Provide safety measures in external circuits, i.e., not in the HMI, in order to ensure
safety in the system if an abnormality occurs due to malfunction of the HMI or another
external factor affecting the HMI operation. Not doing so may result in serious
accidents.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures
must be provided in external control circuits.
Never short-circuit the positive and negative terminals of the batteries, charge
the batteries, disassemble them, deform them by applying pressure, or throw
them into a fire. The batteries may explode, combust or leak liquid.
Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes. Not doing so may result in
serious accidents.
The HMI will turn OFF when its self-diagnosis function detects any error. As a
countermeasure for such errors, external safety measures must be provided to
ensure safety in the system.
Do not touch any of the terminals or terminal blocks while the power is being supplied.
Doing so may result in electric shock.
Pay careful attention to the polarities (+/-) when wiring the DC power supply. A wrong
connection may cause malfunction of the system.
Confirm safety at the destination HMI before transferring a program or settings to
another HMI. Doing this without confirming safety may result in injury.
Tighten the screws on the terminal block of the Power Supply connector to the torque
specified in the operation manual. The loose screws may result in burning or
malfunction.
Section 1-3
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