Precautions for Safe Use
• Do not apply labels or tape to the Unit. When the Unit is installed or removed, adhesive or
scraps may adhere to the pins in the NX bus connector, which may result in malfunctions.
•
Do not touch the pins in the NX bus connector on the Unit. Dirt may adhere to the pins in the
NX bus connector, which may result in malfunctions.
• Do not write anything with ink within the restricted region of the CPU Unit that is shown in the
following figure. Also do not get this area dirty. When the Unit is installed or removed, ink or
dirt may adhere to the pins in the NX bus connector, which may result in malfunctions in the
Unit.
Refer to the user’s manual for the connected NX Unit for information on the restricted region
for the NX Unit.
Restricted region
(shaded portion)
Precautions for Correct Use
• When you handle the Unit, be careful not to apply stress to the pins in the NX bus connector
and X Bus connector.
If the Unit is installed and the power supply is turned ON when the pins in the connector are
deformed, contact failure may cause malfunctions.
1 Install the DIN Track.
• Using a PFP-50N/100N DIN Track
Use one M4 screw for each three holes in the DIN T
rack. There must be a screw for each inter-
val of 105 mm or less. The screw tightening torque is 1.2 N·m.
5 Installation and Wiring
5-15
NX-series NX502 CPU Unit Hardware User's Manual (W629)
5-3 Mounting and Removing Units
5
5-3-3 Installing the CPU Unit
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