Precautions For Safe Use - Omron NX Series User Manual

Precautions for Safe Use

Precautions for Safe Use
Transporting and Disassembly
• Do not attempt to disassemble, repair, or modify any Units. Doing so may result in malfunction or
fire.
• Do not drop any Unit or subject it to abnormal vibration or shock. Doing so may result in Unit mal-
function or burning.
• When transporting any Unit, use the special packing box for it. Also, do not subject the Unit to ex-
cessive vibration or shock during transportation.
Mounting
• Always turn OFF the power supply before mounting the Units. If the power supply is not OFF, the
Unit may result in malfunction or may be damaged.
• Do not exceed the maximum number of mountable X Bus Units in the specifications. Doing so may
result in Unit malfunction or burning.
Wiring
• Do not pull on the cables or bend the cables beyond their natural limit.
Do not place heavy objects on top of the cables or other wiring lines.
Doing so may break the cables.
• Mount connectors only after checking the mounting location carefully.
• Be sure that the communications cables are locked.
Operation
• After you change any Unit settings, carefully check the safety of the controlled system before you
restart the Unit.
Turning OFF the Power Supply
• Always turn OFF the power supply to the Controller before you attempt any of the following.
a) Mounting or removing the NX Units, X Bus Units or CPU Units
b) Assembling the Units
c) Setting DIP switches or rotary switches
d) Connecting cables or wiring the system
e) Connecting or disconnecting the terminal blocks or connectors
The power supply circuit in the CPU Unit may continue to supply power to the Controller for a few
seconds after the power supply turns OFF. The POWER indicator is lit during this time. Confirm that
the POWER indicator is not lit before you perform any of the above actions.
• Never turn OFF the power supply to the Controller when the BUSY indicator of the NX-series Ether-
Net/IP Unit is flashing. While the BUSY indicator is flashing, the settings in the NX-series
20
NX-series EtherNet/IP Unit User's Manual (W627)