Precautions For Correct Use - Omron CJ1W-ECT21 Operation Manual

Precautions for Correct Use

Precautions for Correct Use
Storage, Mounting, and Wiring
• Do not operate or store the Controller in the following locations. Operation may stop or malfunctions
may occur.
a) Locations subject to direct sunlight
b) Locations subject to temperatures or humidity outside the range specified in the specifications
c) Locations subject to condensation as the result of severe changes in temperature
d) Locations subject to corrosive or flammable gases
e) Locations subject to dust (especially iron dust) or salts
f) Locations subject to exposure to water, oil, or chemicals
g) Locations subject to shock or vibration
• Take appropriate and sufficient countermeasures when installing the Controller in the following loca-
tions.
a) Locations subject to strong, high-frequency noise
b) Locations subject to static electricity or other forms of noise
c) Locations subject to strong electromagnetic fields
d) Locations subject to possible exposure to radioactivity
e) Locations close to power lines
• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any
static build-up.
• Install the Controller away from sources of heat and ensure proper ventilation. Not doing so may
result in malfunction, in operation stopping, or in burning.
• An I/O bus check error will occur and the Controller will stop if an I/O Connecting Cable's connector is
disconnected from the Rack. Be sure that the connectors are secure.
• Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning,
electric shock, or failure.
• Do not allow wire clippings, shavings, or other foreign material to enter any Unit. Otherwise, Unit
burning, failure, or malfunction may occur. Cover the Units or take other suitable countermeasures,
especially during wiring work.
• Use proper connection methods and EtherCAT communication cables. Otherwise, communications
may be faulty. Refer to 2-3 EtherCAT Network Wiring on page 2-9.
• Use the rated power supply voltage for the Power Supply Units. Take appropriate measures to
ensure that the specified power with the rated voltage and frequency is supplied in places where the
power supply is unstable.
Error Processing
• In applications that use the results of instructions that read the error status, consider the affect on the
system when errors are detected and program error processing accordingly. For example, even the
detection of a minor error, such as Battery replacement during operation, can affect the system
depending on how the user program is written.
EtherCAT Communications
• Do not disconnect the EtherCAT slave cables during operation. The outputs will become unstable.
20
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)