S8V-NF
34
Wiring
• Connect the ground completely. A protective earthing terminal
stipulated in safety standards is used. Electric shock or malfunction
may occur if the ground is not connected completely.
• When you insert wires or insert a screwdriver into a release hole, do
not press down on the terminal block with a force of 40 N or greater.
• Do not wire anything to the release holes.
• Do not tilt or twist a flat-blade screwdriver while it is inserted into a
release hole on the terminal block. The terminal block may be
damaged.
• Insert a flat-blade screwdriver into the release holes at an angle.
The terminal block may be damaged if you insert the screwdriver
straight in.
• Do not allow the flat-blade screwdriver to fall out while it is inserted
into a release hole.
• Do not bend a wire past its natural bending radius or pull on it with
excessive force. This may cause a wire to be broken.
• Do not insert more than one wire into each terminal insertion hole.
• Do not pre-solder the ends of the wires. Doing so will inhibit proper
connection.
• Be sure to remove the sheet covering the product for machining
before power-ON so that it does not interfere with heat dissipation.
• If there is a possibility of vibration or shock, please use wires and
stranded wires with ferrules.
• To prevent wiring materials from ignition or smoking, confirm wire
ratings and use the wiring materials given in the following table.
• Crossover wiring can be used for this product.
• However, do not allow the total steady-state current to terminals to
exceed 10 A.
The above table gives the recommended wires for one product.
• When using crossover wiring, select wiring materials suitable for
the total current that will flow to terminals.
Stripping length
DIN Rail Mounting
To mount the Block on a DIN Rail, hook portion (A) of the Block onto
the rail and press the Block in direction (B).
To dismount the Block, pull down portion (C) with a flat-blade
screwdriver and pull out the Block.
Connecting Wires to the Push-In Plus Terminal Block
Part Names of the Terminal Block
Connecting Wires with Ferrules and Solid Wires
Insert the solid wire or ferrule straight into the terminal block until the
end touches the terminal block.
• If a wire is difficult to connect because it is too thin, use a flat-blade
screwdriver in the same way as when connecting stranded wire.
Connecting Stranded Wires
Use the following procedure to connect the wires to the terminal block.
1.
Hold a flat-blade screwdriver at an angle and insert it into the
release hole.
The angle should be between 10° and 15°. If the flat-blade
screwdriver is inserted correctly, you will feel the spring in the
release hole.
2.
With the flat-blade screwdriver still inserted into the release hole,
insert the wire into the terminal hole until it strikes the terminal
block.
3.
Remove the flat-blade screwdriver from the release hole.
Terminal
Model number
Recommended wire gauge
(mm
2
)
(AWG)
I/O terminals
S8V-NFS203
0.5 to 2.5
20 to 14
S8V-NFS206
0.75 to 2.5
18 to 14
PE (protective
earth) terminal
S8V-NFS203
S8V-NFS206
2 to 2.5
14
Recommended Wire
Stripping length
(Ferrules not used)
0.34 to 1.5 mm
2
/AWG20 to 16
8 mm
2 to 2.5 mm
2
/AWG14
10 mm
Precautions for Correct Use
(B)
(A)
Rail stopper
(C)
Release hole
Terminal
(Insertion) hole
Terminal
(Insertion) hole
Ferrules and
solid wires
Release hole
Flat-blade screwdriver
10 to 15°
1
3
2