Keyence N-R4 Manual do Utilizador descarregar pdf (Página 3)

E N-R4-IM

• Wiring IN1 and IN2

• Wiring OUT1 to 4

■ Wiring the RS-422A/485 connector

• Layout of RS-422A pins

• Wiring the RS-422A

Use a twisted pair cable

• Layout of RS-485 pins

• Wiring the RS-485 (wiring to the N-410)

■ Processing the communication cable

1 Remove the sheath of the cable by 70 mm.

2 Cover the bare shield mesh wires and the sheath portion

with a contraction tube of about 40 mm.

3 Make stranded wires from the shield mesh wires and

prepare the required number of wires including the insulated

wires. (5 wires are required for the RS-422A and 3 wires are

required for the RS-485)

4 Remove the cover of each insulated wire by about 8 mm

from the tip.

5 Perform preliminary soldering on each wire by about 6 mm

from the tip.

The external diameter of the preliminarily soldered bare wire

must not exceed 2 mm.

■ Surrounding space

• Install the N-R4 vertically.

When the installation direction changes, provide

adequate surrounding space so that heat does not

build up.

• For ventilation, maintain a space of 50mm or more

from the top and bottom of the N-R4. As long as the

N-R4 is the only source of heat generation, the N-R4

can be installed without space on the right and left

sides.

Provide a space of 80 mm or more in front of the N-

R4 to connect the BL head.

50 mm or more on the top and bottom; no space is required on the

right and left sides

■ Installation precautions

• When installing the N-R4, do not block the ventilation slots on the

top and bottom of the unit. Otherwise, heat builds up inside the

unit, causing product failure.

• If the temperature of the N-R4 will foreseeable exceed the upper

limit of the operating temperature (50°C), take the appropriate

measures such as performing forced air cooling or ensuring

proper ventilation so that the temperature does not exceed the

upper limit of the normal operating temperature (50°C).

Symbol Description Signal direction

SD+ Data transmission + side Output

SD– Data transmission – side Output

SG Signal ground

RD+ Data reception + side Input

RD– Data reception – side Input

Note

• The extended distance of the cable must not exceed

1.2 km.

• For both the N-R4 and external equipment, set the

terminating resistance to ON.

(The terminating resistance of the N-R4 is 100 Ω.)

Symbol Description Signal direction

485+ RS-485 + side I/O

485– RS-485 – side I/O

SG Signal ground

Note

• The extended distance of the cable must not exceed

1.2 km.

• For the N-R4 at the end of the RS-485 trunk line, set

the terminating resistance to ON.

Note

• Do not wire the RS-485 cable via the terminal block.

• Do not install the RS-485 cable and the power line on

the same piping.

• Do not branch the RS-485 line.

• Use stranded copper wire having a gage of AWG12 to

30 and temperature rating of 60°C or higher.

• The tightening torque is 0.56 to 0.79 N·m (5 to 7 lbf·in).

Circuit diagram

IN1, IN2

INCOM

Internal

circuit

OUT1 to 4

OUT

COM

Load

Circuit diagram

Load

Internal circuit

External equipment

N-R4

Recommended RS-422A cable (with shield)

Manufacturer: NIHON ELECTRIC WIRE & CABLE Co., LTD

Product name:Instrumentation cable

Model: KNPEV-SB 0.75 mm

x 2P

N-R4

Recommended RS-485 cable (with shield)

Manufacturer: NIHON ELECTRIC WIRE & CABLE Co., LTD

Product name:Instrumentation cable

Model: KNPEV-SB (1P) 0.75 mm

N-R4 N-R4

Installing the N-R4

Sheath

About 70 mm

Contraction tube

About 40 mm

Shield stranded wire

Insulated wire

About 8 mm

2 mm or less

Top

Bottom

80 mm or more

from the front

80 mm

50 mm

1 2 3 4

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