Mounting And Removing Units; Installation In A Control Panel - Omron NX Series Hardware User Manual

5 Installation and Wiring
5-3

Mounting and Removing Units

This section describes how to mount and remove NX-series Units.
Precautions for Safe Use
Always turn OFF the power supply to the Controller before you attempt any of the following.
• Mounting or removing the Units
• Assembling the Units
• Setting DIP switches or rotary switches
• Connecting cables or wiring the system
• 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.
Precautions for Correct Use
• Follow the instructions in this manual to correctly perform installation.
• Do not operate or store the Controller in the following locations. Doing so may result in burn-
ing, in operation stopping, or in malfunction.
a) Locations subject to direct sunlight
b) Locations subject to temperatures or humidity outside the range specified in the specifica-
tions
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 follow-
ing locations.
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
5-3-1

Installation in a Control Panel

Installation in Cabinets or Control Panels
When the NX-series Controller is being installed in a cabinet or control panel, be sure to provide prop-
er ambient conditions as well as access for operation and maintenance.
l Temperature Control
The ambient operating temperature of the NX-series Controller must be within the range of 0 to
55°C. When necessary, take the following steps to maintain the proper temperature.
• Provide enough space for good air flow.
• Do not install the Controller above equipment that generates a large amount of heat such as
heaters, transformers, or high-capacity resistors.
• If the ambient temperature exceeds 55°C, install a cooling fan or air conditioner.
5-8
NX-series NX102 CPU Unit Hardware User's Manual (W593)