I/O Connections And Startup Precautions; Handling - Omron ZEN Operation Manual

Application Precautions
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I/O Connections and Startup Precautions

2-5

Handling

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• Provide circuit breakers and other safety measures to provide
protection against shorts in external wiring.
• Use separate wiring ducts for signal wires from those used for
power supply and high-voltage lines.
• Always check polarity when connecting cables.
• Leave the label attached to the Unit when wiring. Removing the
label may result in malfunction if foreign matter enters the Unit.
• Remove the label after the completion of wiring to ensure proper
heat dissipation. Leaving the label attached may result in mal-
function.
• Tighten the terminal block screws to the torque specified in the
manual.
• Wire the ZEN according to instructions in the operation manual.
Improper installation may cause faulty operation.
• Use the Units only with the power supplies and voltages speci-
fied in the operation manual. Other power supplies and voltages
may damage the Units.
• Take measures to stabilize the power supply to conform to the
rated supply if it is not stable.
• Do not apply voltages exceeding the rated input voltage to input
circuits. The input circuits may be destroyed.
• Do not apply voltages exceeding the maximum switching capac-
ity to output circuits. The output circuits may be destroyed.
• Double-check all wiring before turning ON the power supply.
Incorrect wiring may result in burning.
• Check the user program for proper execution before actually run-
ning it on the Unit. Not checking the program may result in an
unexpected operation.
• Use, store, and transport the ZEN under the limits given for gen-
eral specifications in this manual.
• Do not attempt to disassemble, repair, or modify any Units. Any
attempt to do so may result in malfunction, fire, or electric shock.
• Always turn OFF the power supply to the ZEN before attempting
any of the following.
• Assembling the ZEN.
• Attaching or removing the Expansion I/O Unit.
• Connecting or disconnecting any cables or wiring.
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