KEYENCE N-410 User Manual

Page 47

2-25

2-5

N-48 Connections and Wiring

• Up to 31 N-48 units can be connected in multi-drop link mode.
• The total length of the RS-485 cable should be under 1.2 km.
• Use the terminator switch to turn the N-48 terminator on or off.

"N-48" (Page 1-7)

The terminator switch can also be used to turn the N-410 terminator on or off.

"N-410" (Page 1-5)

• If using the 24 V DC power supply for the N-48 to power the N-410, a power supply with a capacity

of 80 mA (the current consumption of the N-410) + 260 mA (the current consumption of the N-48) x
n (the number of N-48 devices) is required.

Example: 5 units connected

80 mA + 260 mA x 5 = 1.44 A
Use a power supply with a capacity of 1.44 amps or more.

When supplying the power from the N-410 to the N-48, the RS-485 line between the N-410
and the N-48 can be up to 30 m long.
Also, confirm that all N-48 devices on the network have a power supply of 24 V DC +10%/
-20%.

Be sure that the RS-485 cable is not connected through a transient terminal.

• Do not run this through the same ducts as the power line.
• Do not branch the RS-485 connections as shown below.

Note

Recommended RS-485 cable (shielded)
Maker: Furukawa Electric Co., Ltd.
Part name: Instrumentation cable
Model: KPEV-SB(1P) 0.75 mm

Note

BAD

GOOD

Note

N-48

N-410

N-48

N-410

N-48

* Terminator turned on

BAD (Branched)

GOOD (Not branched)