Omron GRT1-CRT - 05-2008 Operation Manual page 11

Precautions for Safe Usage
Precautions for Safe Usage
• Put a Unit in the special box during transportation. Make sure that the Unit is moved carefully, and
not given too much vibration or shock during transportation.
• Do not let a Unit fall or give it too much vibration or shock. This can cause malfunction or cause
damage to the Unit.
• Install the SmartSlice I/O Terminal correctly on DIN Track.
• Be sure that you correctly lock the terminal block, the communications cable connectors, and other
items with locking devices.
• Correctly connect the Units as this manual shows.
• Interference between the Flat Cables for more than one CompoNet System can cause operation
that is not stable. Keep the Flat Cables for different CompoNet Systems apart by a minimum of
5 mm. Interference can occur for Sheathed Cable or Unsheathed Cable.
• Do not let metal objects enter the Unit when connecting or installing it.
• Connect ferrules to the wires when you connect the wires. Do not connect stranded wires directly
to terminals.
• Use the specified communications cables and connectors.
• Use the correct polarity when connecting the terminals.
• Put the ferrules fully into the holes.
• Do a full check of the terminal block before you attach it.
• Do not bend the cables to more than their normal bending radius or pull on the cables.
• Obey the following precautions when connecting communications cables.
• Keep the communications cables away from the power lines or high-tension lines.
• Do not bend the communications cables with too much force.
• Do not pull on the communications cables with too much force.
• Do not put objects on the communications cables.
• Put the communications cables in ducts.
• If the power supply conditions are bad, install countermeasures to make sure that the power
supply always has the rated voltage.
• You must make interlock circuits, limit circuits, and other safety measures in circuits that are
external to the control system.
• Use the power supply voltage which this manual specifies.
• Make sure that there will be no problems when the Unit changes to fixed allocations for the I/O
Areas before you clear the Registration Table. (You set user remote I/O allocations in the
Registration Table.)
• Do not let the communications distance be higher than the specified value.
• Install circuit breakers and other safety measures to prevent Unit damage which short-circuits in
external wires can cause.
• Install failsafe measures to make sure that the system is safe if disconnected signal lines or short
power interruptions cause incorrect signals.
• Always obey the voltage specifications for power supply connections and I/O jumpers. Incorrect
connections can cause malfunctions.
• Do not apply a voltage or connect a load which is larger than the maximum switch capacity to an
Output Slave.
• Do not apply a voltage which is larger than the rated voltage to an Input Slave.
• Be sure there are no mistakes in connections or switch settings before you turn ON the power
supply.
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