Omron NX-SL3300 User Manual page 28

Precautions for Safe Use
• When you insert a flat-blade screwdriver into a release hole on the screwless clamping terminal
block, press the screwdriver down with a force of 30 N or less. Applying excessive force may dam-
age the terminal block.
• Do not tilt or twist the flat-blade screwdriver while it is pressed into the release hole on the screwless
clamping terminal block. Doing so may damage the terminal block.
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Power Supply Design
• Use the I/O power supply capacity within the range that is given in the Unit specifications.
• Provide suitable power supply capacity according to the reference manuals.
• Use the power supply voltage that is specified in the related manuals.
• Do not apply voltages that exceed the rated value to any Input Unit.
Debugging
• With forced refreshing, the values of variables are overwritten with specified values and then the
safety programs are executed. If forced refreshing is used for variables that give the results of pro-
gram processing, the variables will first take the specified values, but they will then be overwritten by
the safety program.
• Depending on the difference in the forced status, the control system may operate unexpectedly.
• After you clear the memory, the Controller operates in the same way as immediately after you create
the system configuration with the Controller in the factory default condition.
• Verify that the safety communications with a remote node will be established in the debug mode of
the Safety CPU Unit.
Turning ON the Power Supply or Restarting after Safety Validation
• Remember that if safety validation is successful, the next time the Safety CPU Unit is started, it will
automatically start in RUN mode.
• When you download the parameters for the NJ/NX-series CPU Units, the Communications Coupler
Unit and NX Units, the Safety CPU Unit automatically restarts.
Turning ON the Power Supply
• Double-check all wiring connections and switch settings to make sure that they are correct before
turning ON the power supply. Use the correct wiring parts and tools when you wire the system.
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NX-series Safety Control Unit User's Manual (Z930)